Automatic feeding device for secondary injection molding of waterproof switch

Abstract

The present application relates to an automatic feeding device for secondary injection molding of waterproof switches, including a first manipulator, a second manipulator and a positioning platform, wherein the first manipulator and the second manipulator are both provided with a material taking device, and the material taking device is used to take and put down a box body, and the first manipulator and its material taking device are used to move the box body to be secondary injection molded to the positioning platform, and the positioning platform is provided with a positioning component for positioning the box body placed on the positioning platform by the first manipulator, and the second manipulator and its material taking device are used to move the box body on the positioning platform to the fixed mold, and can also move the box body after secondary injection molded on the movable mold out of the movable mold. By using the first manipulator and the second manipulator to control the movement of the material taking device, the material taking device is used to take and put down the box body, and the operator no longer needs to manually take and put the box body, which reduces the operating pressure of the operator.

Description

Technical Field

[0001] The present application relates to the field of feeding devices, and in particular to an automatic feeding device for secondary injection molding of waterproof switches. Background Art

[0002] Secondary injection molding is a special plastic molding process. After a certain plastic raw material is molded in a primary plastic mold, the molded parts are taken out and placed in a secondary molding mold to be injected with the same or another plastic material again.

[0003] Related art waterproof switch box such as Figure 1 As shown, the box body 1 is formed by one injection molding. A ring groove 11 and a plurality of grooves 12 are formed on one side of the box body 1, and the ring groove 11 and the plurality of grooves 12 need to be filled in the secondary injection molding.

[0004] The secondary injection molding device includes a fixed mold and a movable mold. The operator manually installs the box body on the fixed mold, and then closes the movable mold on the fixed mold to perform secondary injection molding on the box body. After the secondary injection molding is completed, the movable mold is moved out, and the molded box body is moved out with the movable mold. Then the operator manually removes the secondary injection molded box body from the movable mold.

[0005] The above-mentioned related technical solutions have the following defects: during the whole process of secondary injection molding of the box body, the operator needs to continuously install the box body to be secondary injection molded on the fixed mold, and then remove the secondary injection molded box body from the movable mold, and the whole process is relatively troublesome. Summary of the invention

[0006] In order to reduce the operating pressure of operators, the present application provides an automatic feeding device for secondary injection molding of a waterproof switch.

[0007] The present application provides an automatic feeding device for secondary injection molding of a waterproof switch, which adopts the following technical solution:

[0008] An automatic feeding device for secondary injection molding of a waterproof switch comprises a first manipulator, a second manipulator and a positioning platform, wherein the first manipulator and the second manipulator are both provided with a material picking device, and the material picking device is used to pick up and put down a box body, the first manipulator and its material picking device are used to move the box body to be secondary injection molded to the positioning platform, the positioning platform is provided with a positioning component for positioning the box body placed on the positioning platform by the first manipulator, the second manipulator and its material picking device are used to move the box body on the positioning platform to the fixed mold, and can also move the box body after secondary injection molded on the movable mold out of the movable mold.

[0009] By adopting the above technical solution, the movement of the material picking device is controlled by using the first manipulator and the second manipulator. The material picking device is used to pick up and put down the box body. The operator no longer needs to manually pick up and put down the box body, which reduces the operator's work pressure.

[0010] Preferably, the material picking device includes a receiving block, two inflation and deflation devices and two groups of suction cups. The receiving block is arranged on the corresponding first manipulator or the corresponding second manipulator. Each group of suction cups includes a plurality of suction cups. The two groups of suction cups are respectively arranged on the outer walls of the receiving block on both sides facing each other. The two inflation and deflation devices correspond to the two groups of suction cups respectively, and the inflation and deflation devices are used to control the air pressure in the suction cups.

[0011] By adopting the above technical solution, the box body is adsorbed by the suction cup, and then the air pressure in the suction cup is controlled by the inflation and deflation device. When the air pressure in the suction cup becomes smaller, the adsorption force of the suction cup on the box body becomes larger, and the box body can stably follow the movement of the material picking device. When the air pressure in the suction cup becomes larger, the adsorption force of the suction cup on the box body weakens, and the box body can automatically detach from the material picking device.

[0012] Preferably, the inflation and deflation device includes a piston, a driving member and a plurality of connecting tubes. An inner cavity is opened in the receiving block. The piston is slidably connected to the inner cavity and divides the inner cavity into two first cavities that are not connected to each other. The driving member drives the piston to slide. The plurality of connecting tubes correspond to a plurality of suction cups respectively, and the two ends of the connecting tubes are respectively connected to the corresponding suction cup and one of the first cavities.

[0013] By adopting the above technical solution, the piston is driven to slide by the driving member, and the sliding of the piston can change the volume of the first cavity. The suction cup is connected to the corresponding first cavity through the connecting pipe, thereby changing the air pressure in the suction cup, thereby realizing the adsorption and detachment of the suction cup from the box body.

[0014] Preferably, the driving member 1 comprises a self-locking button device and a plurality of connecting rods, wherein the self-locking button device is arranged on the receiving block and the corresponding piston, and the piston can only be kept at two different fixed positions in the inner cavity under the action of the self-locking button device, and the two fixed positions are respectively a first position and a second position;

[0015] A plurality of connecting rods correspond to a plurality of suction cups, one end of the connecting rod is fixed on the corresponding piston and is slidably connected to the receiving block along a sliding direction parallel to the piston, and one end of the connecting rod away from the piston extends out of the receiving block and is fixed on the corresponding suction cup, and each time the connecting rod abuts and presses the piston once, the piston switches back and forth between the first position and the second position once.

[0016] By adopting the above technical solution, each time the connecting rod abuts and presses the piston, the piston switches to different positions to achieve a change in the size of the space of the first chamber, thereby changing the air pressure in the suction cup and achieving adsorption and detachment of the suction cup from the box body.

[0017] Preferably, it also includes a first spring, the connecting rod includes a first rod and a second rod, one end of the first rod is fixed on the piston and is slidably connected to the receiving block along a sliding direction parallel to the piston, the first rod one end away from the piston extends out of the receiving block and is provided with a sliding groove, one end of the second rod is slidably connected to the sliding groove, and the other end of the second rod is fixed to the corresponding suction cup, a limit block is provided on the outer wall of the second rod, a limit groove is provided on the inner wall of the sliding groove, and the limit block is slidably connected in the limit groove along a sliding direction parallel to the second rod, the first spring is arranged on the second rod and drives the second rod to always move toward the side away from the receiving block until the limit block abuts on the inner wall of the limit groove. When the second rod moves toward one side of the receiving block, the second rod moves until the limit block abuts on the side surface of the limit groove close to the receiving block, which can drive the first rod and the piston to continue moving.

[0018] By adopting the above technical solution, before the connecting rod drives the piston to move, the second rod needs to move a certain distance first. At this time, the suction cup will first abut against the box body and apply force for a period of time, so that the suction cup can be better adsorbed on the box body before the piston is deflating, reducing the leakage of the suction cup and allowing the inflation and deflation device to better act on the suction cup.

[0019] Preferably, a detection device is also included, and the detection device is used to detect the air tightness of the suction cup.

[0020] By adopting the above technical solution, when the suction cup is adsorbed on the box body, the air tightness of the suction cup is the key factor that determines whether the suction cup can stably absorb the box body. Therefore, it is very necessary to set up a detection device to detect the air tightness of the suction cup. When it is detected that the air tightness is insufficient, the equipment can be stopped to prevent the box body from falling from the suction cup during transportation, thereby protecting the box body. The equipment can be operated again after inspection by the operator.

[0021] Preferably, the detection device includes a pressure sensor, a balloon and a sealing member, the second rod is provided with a first channel connecting the suction cup and the slide groove, the balloon is fixed on the outer wall of the first rod, the first rod is provided with a second channel connecting the balloon and the slide groove, the anti-blocking member blocks the connecting pipe before the limit block approaches the side of the limit groove away from the suction cup, when the suction cup abuts against the box body and the inside of the suction cup is in a sealed state, the balloon is inflated with the movement of the second rod, and the pressure sensing device is arranged on the first rod and is used to detect the pressure of the inflated balloon abutting against the pressure sensor.

[0022] By adopting the above technical solution, the suction cup abuts against the box body. If the suction cup has good air tightness, before the second rod moves to the limit block and abuts against the side of the limit groove away from the suction cup, the anti-blocking part blocks the connecting pipe. At this time, the first channel, the slide groove and the second channel are in a sealed state, and the slide groove is gradually compressed by the second rod. At this time, the gas in the slide groove will enter the balloon to inflate the balloon. The inflated balloon can abut against the pressure sensor. The pressure sensor can determine whether the air tightness of the suction cup is good at this time by measuring the abutting pressure.

[0023] Preferably, the blocking member includes a second spring, an abutment rod and a movable block, the connecting tube includes a soft tube and a hard tube whose ends are connected to each other, the hard tube one end away from the soft tube is connected to the suction cup, and the soft tube one end away from the hard tube is connected to the corresponding first cavity, a fixed block is fixed on the hard tube, a movable groove communicating with the inside of the hard tube is provided on the fixed block, two ends of the movable groove in the length direction are respectively located on both sides of the hard tube, the movable block is slidably connected in the movable groove along a sliding direction parallel to the second rod and is used to block the hard tube, a third channel is provided on the movable block for restoring the connection of the hard tube, the second spring is arranged on the movable block and drives the movable block to always move toward the first rod side to block the hard tube, the abutment rod is fixed on the first rod, one end of the abutment rod extends to the movable groove and abuts on the movable block, and when the limit block moves to abut on the side of the limit groove away from the suction cup, the third channel is connected to the hard tube.

[0024] By adopting the above technical solution, with the second rod as a reference, when the first rod moves toward the second rod, the abutment rod will abut against the movable block and drive the movable block to move at the same time. Before the movable block moves to the third channel and connects with the hard tube, the pressure sensor completes the detection. If there is no problem with the air tightness, it means that the material picking device can continue to operate to complete the material picking.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] By using the first manipulator and the second manipulator to control the movement of the material taking device, the material taking device is used to take and put down the box body, and the operator no longer needs to manually take and put the box body, thereby reducing the operating pressure of the operator;

[0027] By setting up a detection device, since the air tightness of the suction cup is the key factor that determines whether the suction cup can stably absorb the box body, when the detection device detects that the air tightness is insufficient, the equipment can be stopped to prevent the box body from falling from the suction cup during transportation, thereby protecting the box body. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the related technology.

[0029] Figure 2 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0030] Figure 3 It is a schematic diagram of the operation of the material taking device of the embodiment of the present application on the secondary injection molding device.

[0031] Figure 4 It is a schematic diagram of the structure of the material taking device according to an embodiment of the present application.

[0032] Figure 5 is along Figure 4 Section view along line AA.

[0033] Figure 6 It is a schematic diagram of the structure of the self-locking button device of an embodiment of the present application.

[0034] Figure 7 yes Figure 6 Enlarged view of point D in the middle.

[0035] Figure 8 yes Figure 5 Enlarged view of point C in the middle.

[0036] Fig. 9 is along Figure 4 Cross-sectional view along line BB.

[0037] Fig.10 yes Fig. 9 Enlarged view of point E in the middle.

[0038] Description of reference numerals: 1, box body; 11, annular groove; 12, groove; 21, first manipulator; 22, second manipulator; 23, positioning platform; 24, positioning assembly; 241, positioning block; 242, cylinder; 25, movable mold; 26, fixed mold; 27, finished product box; 3, material taking device; 31, receiving block; 311, inner cavity; 312, first cavity; 313, side groove; 32, charging and discharging device; 321, piston; 3211, first position; 3212, second position; 322, connecting pipe; 3221, soft pipe; 3222, hard pipe; 33, suction cup; 34, driving member 1; 34 1. Connecting rod; 3411. First rod; 3412. Second rod; 3413. Slide groove; 3414. Limiting groove; 3415. Limiting block; 3416. First spring; 35. Self-locking button device; 351. Sliding block; 3511. Side block; 3512. Heart-shaped groove; 352. Rotating hook; 353. Third spring; 36. First channel; 37. Second channel; 4. Detection device; 41. Pressure sensor; 42. Balloon; 43. Blocking piece; 431. Second spring; 432. Abutting rod; 433. Movable block; 4331. Third channel; 44. Fixed block; 441. Movable groove. DETAILED DESCRIPTION

[0039] The following is combined with Figure 1-10 This application is described in further detail.

[0040] The embodiment of the present application discloses an automatic feeding device for secondary injection molding of a waterproof switch.

[0041] Reference Figure 1 , Figure 2 The automatic loading device for secondary injection molding of the waterproof switch of this embodiment includes a first manipulator 21, a second manipulator 22 and a positioning platform 23. The first manipulator 21 and the second manipulator 22 are both provided with a material picking device 3, and the material picking device 3 is used to pick up and put down the box body 1. The first manipulator 21 and the second manipulator 22 are used to control the movement of the material picking device 3.

[0042] Reference Figure 1 , Figure 3 The box body 1 needs to be subjected to secondary injection molding after the primary injection molding. A ring groove 11 and a plurality of grooves 12 are formed on one side of the box body 1. The secondary injection molding needs to fill these ring grooves 11 and the plurality of grooves 12. The secondary injection molding device includes a fixed mold 26 and a movable mold 25. The fixed mold 26 is provided with a slot for the box body 1 to be inserted on one side of the movable mold 25. The box body 1 is mounted on the fixed mold 26, and then the movable mold 25 is closed on the fixed mold 26 to perform secondary injection molding on the box body 1. After the secondary injection molding is completed, the movable mold 25 is moved out, and the molded box body 1 is moved out along with the movable mold 25, and then the secondary injection molded box body 1 is removed from the movable mold 25.

[0043] Reference Figure 2 , Figure 3 The whole process of using the device for secondary injection molding is as follows: the operator first stacks the box body 1 to be secondary injection molded on the external box body, and then the first manipulator 21 and the material taking device 3 are used to take the box body 1 to be secondary injection molded in the box body and move it to the positioning table 23 and put it down. The positioning table 23 is provided with a positioning component 24 for positioning the box body 1 placed on the positioning table 23 by the first manipulator 21, and then the second manipulator 22 and its material taking device 3 are used to move the box body 1 on the positioning table 23 to the fixed mold 26, and then the molded box body 1 brought out by the previous movable mold 25 is taken out from the movable mold 25 and moved out, and then these molded box bodies 1 are placed in the finished product box 27.

[0044] Reference Figure 2 , Figure 3The positioning assembly 24 includes two cylinders 242 and multiple positioning blocks 241. The multiple positioning blocks 241 are fixed on the top surface of the positioning platform 23. The multiple positioning blocks 241 are used for positioning and abutting the adjacent side surfaces of the positioning box body 1. The two cylinders 242 are respectively fixed on the positioning platform 23. The piston 321 rod of the cylinder 242 is set toward one side of the box body 1. The two cylinders 242 are respectively used to push the box body 1 to abut against the multiple positioning blocks 241.

[0045] Reference Figure 3 , Figure 4 The material taking device 3 includes a receiving block 31, two gas charging and discharging devices 32 and two groups of suction cups 33. The receiving block 31 is installed on the corresponding first manipulator 21 or the corresponding second manipulator 22. The first manipulator 21 and the second manipulator 22 can directly drive the receiving block 31 to move. The two groups of suction cups 33 are respectively arranged on the outer walls of the receiving block 31 facing each other. The two gas charging and discharging devices 32 correspond to the two groups of suction cups 33 respectively. Each group of suction cups 33 includes a plurality of suction cups 33. The installation positions of the two groups of suction cups 33 on the outer wall of the receiving block 31 are determined according to the actual positions that can be adsorbed on the front and back sides of the box body 1. The gas charging and discharging devices 32 are used to control the air pressure in the corresponding group of multiple suction cups 33.

[0046] Reference Figure 4 , Figure 5 The inflation and deflation device 32 includes a piston 321, a driving member 34 and a plurality of connecting tubes 322. Two inner chambers 311 are provided in the receiving block 31. The two inner chambers 311 correspond to the two inflation and deflation devices 32 respectively. The piston 321 is slidably connected to the inner chamber 311 and divides the inner chamber 311 into two first chambers 312 that are not connected to each other. The sliding direction of the piston 321 slides back and forth between the two groups of suction cups 33. The driving member 34 drives the piston 321 to slide. The plurality of connecting tubes 322 correspond to the plurality of suction cups 33 respectively. The two ends of the connecting tube 322 are respectively connected to the corresponding suction cups 33 and the first chamber 312 close to the suction cup 33.

[0047] Reference Figure 6 , Figure 7 The driving member 34 includes a self-locking button device 35 and a plurality of connecting rods 341. The self-locking button device 35 is arranged on the receiving block 31 and the corresponding piston 321. The self-locking button device 35 can be a structure used on a push-type ballpoint pen or a structure used on a self-locking switch. When the switch button is pressed for the first time, the switch is turned on and maintained, that is, self-locking. When the switch button is pressed for the second time, the switch is turned off and the switch button pops out at the same time.

[0048] Reference Figure 6 , Figure 7The self-locking button device 35 of the present application includes a slider 351, a rotating hook 352 and two third springs 353. The slider 351 is located on the side of the piston 321 away from the corresponding suction cup 33. One end of the slider 351 is fixed on the piston 321, and the other end of the slider 351 is connected to the receiving block 31. Side blocks 3511 are fixed to the outer walls of both sides of the slider 351. Two side grooves 313 matching the two side blocks 3511 are opened in the receiving block 31. The side grooves 313 are not connected to the inner cavity 311. The two side blocks 3511 are slidably connected in the corresponding side grooves 313 along a sliding direction parallel to the piston 321. The two third springs 353 correspond to the two side grooves 313 respectively. The two ends of the third spring 353 respectively abut on the side surface of the side block 3511 away from the corresponding suction cup 33 and the side surface of the side groove 313 away from the corresponding suction cup 33. The third spring 353 is always in a compressed state.

[0049] Reference Figure 6 , Figure 7 A heart-shaped groove 3512 is provided on one side of the slider 351. One end of the swivel hook 352 is rotatably connected to the receiving block 31. The other end of the swivel hook 352 is located in the heart-shaped groove 3512 and is used to move along the heart-shaped groove 3512. A step is provided at a corresponding position in the heart-shaped groove 3512. When the slider 351 moves back and forth, the end of the swivel hook 352 can only move in one direction in the heart-shaped groove 3512. Figure 5 , Figure 6 Under the action of the self-locking button device 35, the piston 321 can only be maintained at two different fixed positions in the inner cavity 311, the two fixed positions are respectively a first position 3211 and a second position 3212, and the first position 3211 is closer to the corresponding suction cup 33 than the second position 3212.

[0050] Reference Figure 5 , Figure 8 , a plurality of connecting rods 341 correspond to a plurality of suction cups 33 respectively, one end of the connecting rod 341 extends to the corresponding inner cavity 311 and is fixed on the corresponding piston 321, the connecting rod 341 can be slidably connected to the receiving block 31 along a sliding direction parallel to the piston 321, the connecting rod 341 does not affect the sealing of the inner cavity 311, and one end of the connecting rod 341 away from the piston 321 extends out of the receiving block 31 and is fixed on the corresponding suction cup 33. Each time the connecting rod 341 abuts and presses the piston 321 once, the piston 321 can switch back and forth between the first position 3211 and the second position 3212 once.

[0051] Reference Figure 5 , Fig. 9When the suction cup 33 absorbs the box body 1, the piston 321 is located at the first position 3211, and then the receiving block 31 is driven to move toward one side of the box body 1 so that the suction cup 33 abuts against the box body 1, and then the receiving block 31 is driven to move away from one side of the box body 1. At this time, the piston 321 is located at the second position 3212, and the space of the first chamber 312 connected to the connecting pipe 322 changes from small to large, and negative pressure is generated in the suction cup 33 to absorb the box body 1.

[0052] Reference Figure 5 , Fig. 9 When the suction cup 33 is separated from the box body 1, the piston 321 is located at the second position 3212, and then the receiving block 31 is driven to move toward the side of the box body 1, so that the self-locking button device 35 is released from the self-locking state, and then the receiving block 31 is driven to move away from the side of the box body 1. At this time, the piston 321 is located at the second position 3212, and the space of the first chamber 312 connected to the connecting pipe 322 changes from large to small. Due to insufficient air pressure in the suction cup 33, it is impossible to stably adsorb the box body 1, thereby realizing the separation of the suction cup 33 from the box body 1.

[0053] Reference Fig. 9 , Fig.10 The connecting rod 341 includes a first rod 3411 and a second rod 3412. One end of the first rod 3411 is fixed on the piston 321 and is slidably connected to the receiving block 31 along a sliding direction parallel to the piston 321. The other end of the first rod 3411 extends out of the receiving block 31. A sliding groove 3413 is provided on the end surface of the end of the first rod 3411 extending out of the receiving block 31. One end of the second rod 3412 is slidably connected to the sliding groove 3413 along a sliding direction parallel to the piston 321. The other end of the second rod 3412 is fixed to the corresponding suction cup 33. A limiting block 3415 is fixed on the outer wall of the second rod 3412. A limiting groove 3414 is provided on the inner wall of the sliding groove 3413. The limiting block 3415 is slidably connected in the limiting groove 3414 along a sliding direction parallel to the second rod 3412. A first spring 3416 is provided in the slide groove 3413, and two ends of the first spring 3416 respectively abut against the side of the second rod 3412 away from the suction cup 33 and the side of the slide groove 3413 away from the suction cup 33, and the first spring 3416 is always in a compressed state. When there is no external force, the second rod 3412 always moves toward the side away from the receiving block 31 under the action of the first spring 3416 until the limiting block 3415 abuts against the inner wall of the limiting groove 3414.

[0054] Reference Figure 7 , Fig.10 , the elasticity of the first spring 3416 is less than the elasticity of the third spring 353, referring to Fig. 9 , Fig.10When the second rod 3412 moves toward the receiving block 31, the second rod 3412 moves to the limiting block 3415 and abuts against the side surface of the limiting groove 3414 close to the receiving block 31, so as to drive the first rod 3411 and the piston 321 to continue to move.

[0055] Reference Figure 5 , Figure 8 Before the connecting rod 341 drives the piston 321 to move, the second rod 3412 needs to move a certain distance first. At this time, the suction cup 33 will first abut against the box body 1 and apply force for a period of time, so that the suction cup 33 can be better adsorbed on the box body 1 before the piston 321 is deflating, thereby reducing the leakage of the suction cup 33 and allowing the inflation and deflation device 32 to better act on the suction cup 33.

[0056] Reference Figure 8 , Fig.10 , a detection device 4 is provided on the connecting rod 341, and the detection device 4 is used to detect the air tightness of the suction cup 33. The detection device 4 includes a pressure sensor 41, a balloon 42 and a blocking member 43. A first channel 36 connecting the suction cup 33 and the slide groove 3413 is provided on the second rod 3412. The balloon 42 is fixedly mounted on the outer wall of the first rod 3411, and a second channel 37 connecting the balloon 42 and the slide groove 3413 is provided on the first rod 3411. The anti-blocking member blocks the connecting pipe 322 before the limit block 3415 approaches the side of the limit groove 3414 away from the suction cup 33. When the anti-blocking member blocks the connecting pipe 322, the first channel 36, the slide groove 3413 and the second channel 37 are in a sealed state and are not connected to the outside. The pressure turning rod is fixed on the outer wall of the first rod 3411, and the pressure detection panel of the pressure sensor 41 is located on the side of the balloon 42 away from the first rod 3411. The pressure sensing device is used to detect the pressure of the inflated balloon 42 against the pressure sensing device.

[0057] Reference Figure 8 , Fig.10 The suction cup 33 abuts against the box body 1. If the suction cup 33 has good air tightness, before the second rod 3412 moves to the limit block 3415 and abuts against the side of the limit groove 3414 away from the suction cup 33, the anti-blocking member blocks the connecting pipe 322, and the slide is gradually compressed by the second rod 3412. At this time, the gas in the slide will enter the balloon 42 to inflate the balloon 42. The inflated balloon 42 can abut against the pressure sensor 41. The pressure sensor 41 can determine whether the air tightness of the suction cup 33 is good at this time by measuring the abutting pressure.

[0058] Reference Figure 3 , Fig.10A controller is also provided on the receiving block 31, and the controller is used to receive the detection value of the pressure sensor 41 and compare it with the standard value when the air tightness is good, so as to control the corresponding first manipulator 21 or the second manipulator 22 to stop continuing to operate.

[0059] Reference Figure 8 , Fig.10 The blocking member 43 includes a second spring 431, an abutment rod 432 and a movable block 433. The connecting tube 322 includes a soft tube 3221 and a hard tube 3222 whose ends are connected to each other. The hard tube 3222 is made of hard materials such as plastic and stainless steel. The soft tube 3221 is a hose. One end of the hard tube 3222 away from the soft tube 3221 is connected to the suction cup 33, and one end of the soft tube 3221 away from the hard tube 3222 is connected to the corresponding first cavity 312. A fixed block 44 is fixed to the hard tube 3222. It can also be seen that the hard tube 3222 is vertically inserted in the center of the length direction of the fixed block 44. The fixed block 44 is provided with a movable groove 441 that is connected to the inside of the hard tube 3222. The length direction of the movable groove 441 is parallel to the sliding direction of the second rod 3412. The two ends of the movable groove 441 in the length direction are respectively located on both sides of the radial direction of the hard tube 3222. The movable block 433 is slidably connected in the movable groove 441 along the sliding direction parallel to the second rod 3412 and is used to block the hard tube 3222. The movable block 433 is provided with a third channel 4331 for restoring the connection of the hard tube 3222.

[0060] Reference Figure 8 , Fig.10 The suction cup 33 is always located at the side of the fixed block 44 away from the receiving block 31, the second spring 431 is located in the movable groove 441, and the two ends of the second spring 431 are respectively in contact with the side of the movable groove 441 close to the suction cup 33 and the side of the movable block 433 close to the suction cup 33. The second spring 431 is always in a compressed state. When there is no external force acting on the movable block 433, the movable block 433 always moves toward the side away from the suction cup 33 under the action of the second spring 431 to block the hard tube 3222.

[0061] Reference Figure 8 , Fig.10 The abutting rod 432 is L-shaped, one end of the abutting rod 432 is vertically fixed on the first rod 3411, and the other end of the abutting rod 432 extends into the movable groove 441 and abuts on the movable block 433. When the limiting block 3415 moves to abut on the side of the limiting groove 3414 away from the suction cup 33, the third channel 4331 is completely connected with the hard tube 3222.

[0062] Reference Figure 8 , Fig.10In the process of the suction cup 33 adsorbing the box body 1, taking the second rod 3412 as a reference, when the first rod 3411 moves toward the second rod 3412, the abutment rod 432 will abut on the movable block 433 and drive the movable block 433 to move. Before the movable block 433 moves to the third channel 4331 and connects with the hard tube 3222, the balloon 42 is inflated and the pressure sensor 41 completes the detection. If there is no problem with the air tightness, it means that the material picking device 3 can continue to operate to complete the material picking.

[0063] The implementation principle of an automatic loading device for secondary injection molding of a waterproof switch in an embodiment of the present application is as follows: an operator first stacks the box body 1 to be secondary injection molded on an external box body, and then a first manipulator 21 and a material picking device 3 are used to pick up the box body 1 to be secondary injection molded in the box body and move it to a positioning table 23 and put it down. A positioning assembly 24 is provided on the positioning table 23 to position the box body 1 placed on the positioning table 23 by the first manipulator 21, and then the second manipulator 22 and its material picking device 3 are used to move the box body 1 on the positioning table 23 to the fixed mold 26, and then the molded box body 1 brought out by the previous movable mold 25 is removed from the movable mold 25 and moved out, and then these injection molded box bodies 1 are placed in a finished product box 27.

[0064] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An automatic feeding device for secondary injection molding of waterproof switches, characterized in that: The invention comprises a first manipulator (21), a second manipulator (22) and a positioning platform (23), wherein the first manipulator (21) and the second manipulator (22) are both provided with a material taking device (3), wherein the material taking device (3) is used to take and put down a box body (1), the first manipulator (21) and its material taking device (3) are used to move a box body (1) to be subjected to secondary injection molding onto the positioning platform (23), the positioning platform (23) is provided with a positioning component (24) used to position the box body (1) placed on the positioning platform (23) by the first manipulator (21), and the second manipulator (22) and its material taking device (3) are used to move the box body (1) on the positioning platform (23) onto a fixed mold (26), and can also move the box body (1) subjected to secondary injection molding on a movable mold (25) out of the movable mold (25); The material taking device (3) comprises a receiving block (31), two air-charging and air-discharging devices (32) and two groups of suction cups (33). The receiving block (31) is arranged on the corresponding first manipulator (21) or the corresponding second manipulator (22). Each group of suction cups (33) comprises a plurality of suction cups (33). The two groups of suction cups (33) are respectively arranged on the outer walls of the receiving block (31) facing each other on both sides. The two air-charging and air-discharging devices (32) correspond to the two groups of suction cups (33) respectively. The air-charging and air-discharging devices (32) are used to control the air pressure in the suction cups (33). The air-charging and air-discharging devices (32) comprise a piston (321), a driving member (34) and a plurality of connecting pipes (322). An inner cavity (311) is provided in the receiving block (31). The piston (321) is slidably connected to the inner cavity (311). ) and divides the inner cavity (311) into two first cavities (312) that are not connected to each other, the driving member (34) drives the piston (321) to slide, a plurality of connecting pipes (322) respectively correspond to a plurality of suction cups (33), and the two ends of the connecting pipes (322) respectively connect the corresponding suction cups (33) and one of the first cavities (312); the driving member (34) comprises a self-locking button device (35) and a plurality of connecting rods (341), the self-locking button device (35) is arranged on the receiving block (31) and the corresponding piston (321), and the piston (321) can only be maintained at two different fixed positions in the inner cavity (311) under the action of the self-locking button device (35), and the two fixed positions are respectively a first position (3211) and a second position (3212); A plurality of connecting rods (341) correspond to a plurality of suction cups (33); one end of the connecting rod (341) is fixed on the corresponding piston (321) and is slidably connected to the receiving block (31) along a sliding direction parallel to the piston (321); one end of the connecting rod (341) away from the piston (321) extends out of the receiving block (31) and is fixed on the corresponding suction cup (33); each time the connecting rod (341) abuts and presses the piston (321), the piston (321) is moved between the first position (3211) and the second position (3212). The connecting rod (341) includes a first rod (3411) and a second rod (3412), one end of the first rod (3411) is fixed on the piston (321) and is slidably connected to the receiving block (31) along a sliding direction parallel to the piston (321), one end of the first rod (3411) away from the piston (321) extends out of the receiving block (31) and is provided with a sliding groove (3413), and one end of the second rod (3412) is slidably connected to the sliding groove (3413), the other end of the second rod (3412) is fixed on the corresponding suction cup (33), a limit block (3415) is provided on the outer wall of the second rod (3412), a limit groove (3414) is provided on the inner wall of the slide groove (3413), the limit block (3415) is slidably connected in the limit groove (3414) along a sliding direction parallel to the second rod (3412), the first spring (3416) is provided on the second rod (3412) and drives the second rod (3412) to always move away from the bearing One side of the receiving block (31) moves to the limit block (3415) and abuts against the inner wall of the limit groove (3414); when the second rod (3412) moves toward the receiving block (31), the second rod (3412) moves to the limit block (3415) and abuts against the side surface of the limit groove (3414) close to the receiving block (31), so as to drive the first rod (3411) and the piston (321) to continue to move; and also includes a detection device (4), which is used to detect the air tightness of the suction cup (33);The detection device (4) comprises a pressure sensor (41), a balloon (42) and a blocking member (43); the second rod (3412) is provided with a first channel (36) connecting the suction cup (33) and the slide groove (3413); the balloon (42) is fixed on the outer wall of the first rod (3411); the first rod (3411) is provided with a second channel (37) connecting the balloon (42) and the slide groove (3413); the blocking member (43) blocks the connecting pipe (322) before the limiting block (3415) approaches the side of the limiting groove (3414) away from the suction cup (33); when the suction cup (33) reaches When the interior of the suction cup (33) is in a sealed state after the box body (1) is connected, the balloon (42) is inflated as the second rod (3412) moves, and the pressure sensing device is arranged on the first rod (3411) and is used to detect the pressure of the inflated balloon (42) abutting against the pressure sensor (41); the blocking member (43) comprises a second spring (431), an abutting rod (432) and a movable block (433); the connecting tube (322) comprises a soft tube (3221) and a hard tube (3222) whose ends are connected to each other, and the end of the hard tube (3222) away from the soft tube (3221) is connected to the suction cup (33). The first cavity (312) is connected to the hard tube (3222), one end of the soft tube (3221) away from the hard tube (3222) is connected to the corresponding first cavity (312), a fixed block (44) is fixed to the hard tube (3222), and a movable groove (441) is provided on the fixed block (44) and is connected to the inside of the hard tube (3222), and the two ends of the movable groove (441) in the length direction are respectively located on both sides of the hard tube (3222), and the movable block (433) is slidably connected in the movable groove (441) along a sliding direction parallel to the second rod (3412) and is used to block the hard tube (3222), and the movable block (433) is provided with a movable groove (441) for making the hard tube (3222) (3222) restores the third channel (4331) to be connected, the second spring (431) is arranged on the movable block (433) and drives the movable block (433) to always move toward the first rod (3411) to block the hard tube (3222), the abutting rod (432) is fixed on the first rod (3411), one end of the abutting rod (432) extends to the movable groove (441) and abuts on the movable block (433), when the limiting block (3415) moves to abut on the side of the limiting groove (3414) away from the suction cup (33), the third channel (4331) is connected with the hard tube (3222). ;

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