Automobile seat headrest forming device

Abstract

The invention discloses an automobile seat headrest forming device, and relates to the technical field of automobile headrest forming dies. The automobile seat headrest forming device with the overpressure protection function comprises an upper mold, a lower mold is slidably connected with the upper mold, the automobile seat headrest forming device further comprises a fixing disc, the fixing disc is fixedly connected to the top of the upper mold, the fixing disc communicates with the upper mold, and the fixing disc is fixedly connected to the top of the upper mold. The side, away from the upper die, of the fixing disc communicates with a feeding pipe, the feeding pipe is connected with a discharging pipe, the feeding pipe is provided with a pushing mechanism, and the pushing mechanism is extruded through the pressure of materials. When the pressure value in the feeding pipe is too large, the pushing mechanism is extruded through pressure, the pushing mechanism can drive the rotating frame to rotate by 90 degrees to block the feeding pipe, meanwhile, the pressure relief channel is opened, materials are discharged from the pressure relief channel to be subjected to pressure relief, and therefore overpressure protection is conducted on the feeding pipe and the feeding position of the upper die.

Description

Technical Field

[0001] The invention relates to the technical field of automobile headrest forming dies, in particular to an automobile seat headrest forming device. Background Art

[0002] Car seat headrests are generally installed on the upper part of car seats in order to protect the user's neck and make the user's head more comfortable when sitting on the car seat. When making car seat headrests, plastic materials are generally injected into the headrest molding mold for molding.

[0003] Patent publication number CN219311938U discloses a car seat headrest forming device, including a lower mold base and an upper mold base, the side wall of the upper side of the lower mold base is fixedly connected to the lower mold plate, the side wall of the lower side of the upper mold base is fixedly connected to the upper mold plate, the upper side of the lower mold plate is fixedly connected to the lower mold core, the lower side of the upper mold plate is fixedly connected to the upper mold core, a guide mechanism is fixedly connected between the lower mold base and the upper mold base, and the lower side of the lower mold base is fixedly connected to an auxiliary closing mechanism.

[0004] When using the above patent to perform injection molding on the car seat headrest, the upper mold base can be pressed downward by controlling the auxiliary closing mechanism, so that the upper mold core and the lower mold core are closed to each other. After a molding cavity is formed between the upper mold core and the lower mold core, the molding cavity can be injection molded by an injection molding machine. The existing injection molding machine compacts the plastic material along the screw groove by rotating the screw and then transports the material to the feed pipe of the upper mold core. Then the plastic material enters the molding cavity along the feed pipe of the upper mold core for molding. During the transportation of the plastic material, people need to control the speed of the injection molding machine to transport the plastic material. If the plastic transported in the screw groove is too small, the injection molding machine will not be able to perform injection molding. When the material flow rate is too fast, the plastic material will quickly reach the inside of the feed pipe, and the space inside the feed pipe is relatively small, so the flow rate of the plastic material entering the feed pipe is slowed down, so that the flow rate of the plastic material before entering the feed pipe is much greater than the flow rate after entering the feed pipe, and the pressure value of the plastic material before entering the feed pipe will be much greater than the pressure value after entering the feed pipe. In this way, it is easy for the feed pipe to be broken due to the excessive pressure value of the plastic material entering the feed pipe. The above-mentioned car seat headrest molding device does not have any overpressure protection function. Now a car seat headrest molding device with overpressure protection function is developed. Summary of the Invention

[0005] In order to overcome the shortcoming that the existing automobile seat headrest forming device does not have an overpressure protection function, the technical problem of the present invention is to provide an automobile seat headrest forming device with an overpressure protection function.

[0006] The technical solution is: a car seat headrest forming device, including a lower mold, the lower mold is slidably connected to the upper mold, and also includes a fixed plate, the fixed plate is fixedly connected to the top of the upper mold, the fixed plate is communicated with the upper mold, the fixed plate is communicated with a feed pipe on the side of the fixed plate away from the upper mold, the feed pipe is connected to a discharge pipe, the discharge pipe is provided with a valve on the side away from the feed pipe, a pressure relief channel is provided in the discharge pipe, the pressure relief channel and the valve are communicated, the pressure relief channel and the feed pipe are communicated, a rotating rack is rotatably connected in the discharge pipe, the rotating rack is rotatably connected to the feed pipe on the side close to the feed pipe, the rotating rack passes through the discharge pipe on the side away from the feed pipe, a discharge hole is opened on the side of the rotating rack close to the feed pipe, and the feed pipe is provided with a pushing mechanism, which squeezes the pushing mechanism by the pressure of the material, and the pushing mechanism drives the rotating rack to rotate and block the feed pipe.

[0007] Further description, the pushing mechanism includes a sliding member, which is slidably connected to the feed pipe, and a corrugated rubber sleeve is connected to the side of the feed pipe close to the sliding member, the sliding member passes through the corrugated rubber sleeve, an elastic member is connected between the sliding member and the fixed disk, and a rotating component for driving the rotating frame to rotate is provided between the side of the sliding member away from the corrugated rubber sleeve and the side of the rotating frame away from the feed pipe.

[0008] Further description, the rotating assembly includes a pulling frame, which is mounted on the side of the sliding member away from the corrugated rubber sleeve. The pulling frame is provided with a threaded sleeve on the side close to the rotating frame. The rotating frame is rotatably connected to a ball on the side away from the discharge hole, and the ball and the threaded sleeve are threadedly connected.

[0009] Further description, it also includes an exhaust mechanism for discharging the air in the pressure relief channel, the exhaust mechanism is arranged in the discharge pipe, the exhaust mechanism includes a cleaning part, the cleaning part is slidably connected in the pressure relief channel, the cleaning part passes through the discharge pipe on the side away from the discharge hole, the discharge pipe is provided with an exhaust port on the side away from the discharge hole, the exhaust port is connected to the pressure relief channel, and the rotating frame is provided with a one-way feed port on the side close to the discharge hole, and the one-way feed port is connected to the pressure relief channel.

[0010] Further description, it also includes a locking mechanism for locking the rotating frame, the locking mechanism is arranged on the side of the rotating frame close to the pulling frame, the locking mechanism includes a rotating block, the rotating block is sleeved on the side of the rotating frame close to the pulling frame, a rotating buckle is slidably connected in the rotating block, a telescopic spring is connected between the rotating buckle and the rotating block, and a fixing rod is provided on the side of the discharging pipe close to the rotating block, and the fixing rod and the rotating buckle are snap-fitted.

[0011] Further explanation, it also includes a pressure measuring mechanism for measuring the pressure inside the feed pipe, the pressure measuring mechanism includes a moving part, the moving part is slidably connected to the side of the fixed disk away from the valve, the moving part is connected to a scale rod on the side away from the feed pipe, the scale rod passes through the fixed disk on the side away from the moving part, the fixed disk is connected to a one-way air outlet valve on the side away from the moving part, the fixed disk is provided with an air breather block on the side close to the one-way air outlet valve, the upper mold is provided with an air breather hole on the side close to the air breather block, the air breather hole is connected to the fixed disk, and a reset spring is connected between the air breather block and the moving part.

[0012] Further description, it also includes an adjustment mechanism for adjusting the flow rate of the material when it enters the feed pipe. The adjustment mechanism includes an adjustment cylinder, which is rotatably connected to the top of the feed pipe. Fixed rings with holes are connected at equal intervals in the feed pipe. The adjustment cylinder is connected to a rotating part with holes, and the rotating part with holes and the fixed ring with holes are movably connected.

[0013] Further description, it also includes multiple heating rods, and the multiple heating rods are evenly inserted and connected to the discharge pipe along the circumferential direction.

[0014] It is further explained that the movement of the threaded sleeve can drive the rotating frame to rotate through the ball bearing within an angle range of 0-90 degrees.

[0015] It is further explained that the cleaning member is provided with an arc-shaped scraper made of elastic damping material on one side close to the one-way feed port.

[0016] Beneficial effects: 1. When the pressure value in the feed pipe of the present invention is too large, the pressure squeezes the pushing mechanism, and the pushing mechanism can drive the rotating frame to rotate 90 degrees to block the feed pipe, and at the same time open the pressure relief channel to discharge the material from the pressure relief channel to relieve the pressure, thereby providing overpressure protection for the feed pipe and the upper mold feeding position.

[0017] 2. When the pressure value in the discharge pipe is too large, the present invention will squeeze the corrugated rubber sleeve, causing the corrugated rubber sleeve to compress and squeeze the sliding member, thereby causing the sliding member to drive the threaded sleeve to move left, so that the rotating frame can rotate to block the discharge pipe.

[0018] 3. In the present invention, when the discharge hole rotates to communicate with the pressure relief channel, the cleaning member blocks the discharge hole, which can prevent the air in the pressure relief channel from mixing with the material through the discharge hole, thereby avoiding affecting the injection molding of the headrest.

[0019] 4. In the present invention, if the flow rate of the material entering the feed pipe suddenly accelerates, the pressure will also suddenly increase, which will quickly compress the corrugated rubber sleeve, and the rotating frame will quickly rotate to drive the rotating block and the rotating buckle to rotate rapidly. The rotating buckle will be thrown out and automatically hook the fixed rod, so that the discharge hole and the pressure relief channel can remain connected, that is, they can always be in a pressure relief state, so that rapid pressure relief can be achieved, and the purpose of pressure relief protection can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0021] Figure 2 This is a schematic diagram of a first sectional three-dimensional structure of the present invention.

[0022] Figure 3 This is a schematic diagram of a second sectional three-dimensional structure of the present invention.

[0023] Figure 4 This is a schematic diagram of a third sectional three-dimensional structure of the present invention.

[0024] Figure 5 It is a schematic diagram of the three-dimensional structure of the upper mold, heating rod, feed pipe and other parts of the present invention.

[0025] Figure 6 It is a schematic diagram of the three-dimensional structure of the rotating assembly of the present invention.

[0026] Figure 7 It is a schematic diagram of the three-dimensional structure of the threaded sleeve, elastic member, ball and other parts of the present invention.

[0027] Figure 8 It is a schematic diagram of the first partial three-dimensional structure of the exhaust mechanism of the present invention.

[0028] Figure 9 It is a schematic diagram of the second partial three-dimensional structure of the exhaust mechanism of the present invention.

[0029] Figure 10 This is a schematic diagram of the first partial three-dimensional structure of the locking mechanism of the present invention.

[0030] Figure 11 It is a schematic diagram of the three-dimensional structure of the rotating block, rotating buckle, telescopic spring and other parts of the present invention.

[0031] Figure 12 It is a schematic diagram of the three-dimensional structure of the pressure measuring mechanism of the present invention.

[0032] Figure 13 It is a schematic diagram of the three-dimensional structure of parts such as the regulating cylinder and the feeding pipe of the present invention.

[0033] Figure 14 It is a schematic diagram of the three-dimensional structure of the adjustment mechanism of the present invention.

[0034] Figure 15 This is a three-dimensional structure separation diagram of the fixed ring with holes and the rotating part with holes of the present invention.

[0035] The meanings of the reference numerals in the figure are: 101-upper mold, 102-lower mold, 103-heating rod, 104-rotating frame, 105-discharging hole, 106-valve, 107-fixed plate, 108-feed pipe, 109-discharge pipe, 1010-pressure relief channel, 1111-one-way feed port, 201-sliding part, 202-corrugated rubber sleeve, 203-pulling frame, 204-threaded sleeve, 205-elastic part, 206-ball, 3- Exhaust mechanism, 301-cleaning part, 302-exhaust port, 4-locking mechanism, 401-rotating block, 402-rotating buckle, 403-fixed rod, 404-telescopic spring, 5-pressure measuring mechanism, 501-moving part, 502-scale rod, 503-one-way air outlet valve, 504-ventilation block, 505-ventilation hole, 506-reset spring, 6-adjustment mechanism, 601-adjustment cylinder, 602-fixing ring with hole, 603-rotating part with hole. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0037] Example 1: A car seat headrest forming device, such as Figure 1-Figure 5As shown, it includes a lower mold 102, the upper part of the lower mold 102 is slidably connected to the upper mold 101, a fixed plate 107 is fixedly connected to the top of the upper mold 101, the middle part of the fixed plate 107 is connected to the middle part of the upper mold 101, and the middle of the top of the fixed plate 107 is connected to a feed pipe 108, the lower left part of the feed pipe 108 is connected to a discharge pipe 109, the upper left part of the discharge pipe 109 is provided with a valve 106, and the upper part of the discharge pipe 109 is provided with a pressure relief channel 1010, the left part of the pressure relief channel 1010 is connected to the valve 106, and the right part of the pressure relief channel 1010 is connected to the feed pipe 108, and five heating rods 103 are evenly inserted and connected along the circumferential direction in the discharge pipe 109 for heating the plastic material passing through the discharge pipe 109 to prevent the plastic material from cooling and solidifying. The middle part of the interior is connected to a rotating frame 104 in a horizontal rotation from left to right, and the left end of the rotating frame 104 passes through the discharge pipe 109. The right part of the rotating frame 104 is located in the feed pipe 108, and the right part of the rotating frame 104 is used to block the plastic material of the rotating frame 104 to prevent the plastic material from continuing to flow downward into the upper mold 101. A discharge hole 105 is opened on the right front part of the rotating frame 104. When the discharge hole 105 is rotated to be connected to the pressure relief channel 1010, the material in the feed pipe 108 will flow out from the upper left part of the discharge pipe 109 through the discharge hole 105 and the pressure relief channel 1010, so as to achieve overpressure protection inside the feed pipe 108. A pushing mechanism is provided on the left middle part of the feed pipe 108. The pressure of the material squeezes the pushing mechanism, and the pushing mechanism drives the rotating frame 104 to rotate and block the feed pipe 108.

[0038] like Figure 1 、 Figure 2 、 Figure 3 and Figure 6 As shown, the pushing mechanism includes a sliding member 201, which is slidably connected to the left middle part of the feed pipe 108, and a corrugated rubber sleeve 202 is connected to the left middle part of the feed pipe 108. The right end of the sliding member 201 passes into the corrugated rubber sleeve 202. When the material pressure is too large, the corrugated rubber sleeve 202 will be squeezed, causing the corrugated rubber sleeve 202 to shrink and push the sliding member 201 to the left. An elastic member 205 is connected between the middle part of the sliding member 201 and the upper left part of the fixed plate 107, and a rotating component for driving the rotating frame 104 to rotate is provided between the left part of the sliding member 201 and the left part of the rotating frame 104.

[0039] like Figure 6 and Figure 7 As shown, the rotating assembly includes a pulling frame 203, which is mounted on the left end of the sliding member 201. A threaded sleeve 204 is provided at the lower part of the pulling frame 203. A ball 206 is rotatably connected to the lower left part of the rotating frame 104. The ball 206 and the threaded sleeve 204 are threadedly connected. When the threaded sleeve 204 moves, it can drive the rotating frame 104 to rotate through the ball 206 in an angle range of 0-90 degrees.

[0040] When using the automobile seat headrest molding device to perform injection molding on the automobile seat headrest, the upper mold 101 can be first moved downward and merged with the lower part of the lower mold 102, and then the screw groove of the injection molding machine and the top of the feed pipe 108 can be connected, and then the plastic material in the screw groove of the injection molding machine will enter the feed pipe 108, and then the plastic material will pass through the feed pipe 108 and the fixed plate 107 respectively into the space between the upper mold 101 and the lower mold 102, so that the headrest can be injection molded. When the material passes through the feed pipe 108, if a large amount of material quickly enters the feed pipe 108, and the speed of the material entering between the upper mold 101 and the lower mold 102 is very slow, then a large amount of material will easily accumulate in the feed pipe 108, and the feed The pressure inside the tube 108 and the pressure at the feeding position of the upper mold 101 will also increase. As the pressure inside the feed tube 108 continues to increase, when the pressure is greater than the elastic force of the elastic member 205, the material will squeeze the corrugated rubber sleeve 202, causing the corrugated rubber sleeve 202 to be compressed and deformed. The compression of the corrugated rubber sleeve 202 will push the sliding member 201 to move to the left. The elastic member 205 is compressed, and the sliding member 201 moves to the left, which will drive the pulling frame 203 to move to the left. The pulling frame 203 moves to the left, which will drive the threaded sleeve 204 to move to the left. The threaded sleeve 204 moves to the left, which will drive the rotating frame 104 to rotate 90 degrees counterclockwise through the ball 206. The rotating frame 104 rotates 90 degrees counterclockwise to block the feed tube 108, and the rotating frame Rotating 104 counterclockwise by 90 degrees will drive the discharge hole 105 to connect with the pressure relief channel 1010. At this time, the material will stop flowing downward into the feeding position of the upper mold 101. This can reduce the pressure at the feeding position of the upper mold 101 and avoid the problem of the upper mold 101 bursting at the feeding position. At the same time, the discharge hole 105 and the pressure relief channel 1010 are connected, which can make the material in the feed pipe 108 flow directly to the left through the pressure relief channel 1010. People can open the valve 106 and the heating rod 103 in advance, and connect the valve 106 to the injection molding machine. In this way, the material will be discharged back into the injection molding machine through the valve 106, so that the pressure of the feed pipe 108 can be relieved, and the heating rod 103 can be used to feed the material passing through the discharge pipe 109. The material is heated to prevent it from cooling and solidifying, so that it can flow back into the injection molding machine more smoothly. After the material in the feed pipe 108 is slowly discharged, the pressure in the feed pipe 108 will also slowly drop. When the pressure is less than the elastic force of the elastic member 205, the sliding member 201 will be driven to move to the right and reset under the action of the elastic member 205. The corrugated rubber sleeve 202 is stretched and reset. The sliding member 201 moves to the right and resets, driving the pulling frame 203 and the threaded sleeve 204 to move to the right and reset. The threaded sleeve 204 moves to the right and resets, and the rotating frame 104 is driven by the ball 206 to rotate clockwise and reset to no longer block the feed pipe 108. In this way, the material will continue to flow downward. When the injection molding of the car seat headrest is completed, the valve 106 and the heating rod 103 can be closed.Disconnect the screw groove of the injection molding machine and the top of the feed pipe 108, disconnect the injection molding machine and the valve 106, and then move the upper mold 101 upward and reset it, so that the headrest can be taken out; In summary, when the pressure value in the feed pipe 108 is too high, it will squeeze the corrugated rubber sleeve 202, thereby causing the rotating frame 104 to automatically rotate to block the feed pipe 108 and open the pressure relief channel 1010 to discharge the material inside the feed pipe 108, thereby achieving the purpose of overpressure protection of the feed pipe 108 and also overpressure protection of the feeding position of the upper mold 101.

[0041] Example 2: Based on Example 1, Figure 8 and Figure 9 As shown, it also includes an exhaust mechanism 3 for exhausting the air in the pressure relief channel 1010, the exhaust mechanism 3 is arranged in the discharge pipe 109, the exhaust mechanism 3 includes a cleaning member 301, the cleaning member 301 is slidably connected in the pressure relief channel 1010, the right end of the cleaning member 301 is an arc scraper made of elastic damping material, the arc scraper made of elastic damping material is both resistant to high temperature and can scrape off the residual material inside the pressure relief channel 1010 more cleanly, the right end of the cleaning member 301 and the internal space of the pressure relief channel 1010 just coincide with each other, and the left end of the cleaning member 301 penetrates The discharge pipe 109 and the right side of the cleaning piece 301 are in contact with the right side of the rotating frame 104. An exhaust port 302 is provided on the left side of the discharge pipe 109, and the exhaust port 302 is connected to the pressure relief channel 1010. A one-way feed port 1111 is provided on the right rear side of the rotating frame 104, and the one-way feed port 1111 is connected to the pressure relief channel 1010. The material in the feed pipe 108 cannot enter the pressure relief channel 1010 through the one-way feed port 1111, while the material in the pressure relief channel 1010 can enter the pressure relief channel 1010 through the one-way feed port 1111.

[0042] During the injection molding process, there must be no gas inside the material. If gas is mixed into the material, bubbles will be generated during the injection molding, or some oxidation reactions will occur, resulting in bubbles inside the molded headrest and color changes. At the moment when the discharge hole 105 rotates to connect with the pressure relief channel 1010, the air in the pressure relief channel 1010 can easily mix directly with the material in the feed pipe 108. In order to prevent gas from entering the material, an exhaust mechanism 3 is provided. Initially, the arc scraper at the right end of the cleaning part 301 remains in contact with the right part of the rotating frame 104. When the discharge hole 105 and the pressure relief channel 1010 are connected, the arc scraper at the right end of the cleaning part 301 remains in a state of blocking the discharge hole 105, so there is no gap between the arc scraper and the discharge hole 105. There is air, so the material will push the cleaning piece 301 to move to the left through pressure, so that the cleaning piece 301 moving to the left can discharge the air in the pressure relief channel 1010 through the exhaust port 302, so that the gas will not be directly mixed with the material, and the injection molding will not be affected by the gas. When the rotating frame 104 rotates clockwise to reset, the discharge hole 105 and the pressure relief channel 1010 are no longer connected, and the one-way feed port 1111 and the pressure relief channel 1010 are in a connected state. At this time, people can manually move the cleaning piece 301 to the right to reset it. The cleaning piece 301 moving to the right can push the excess material inside the pressure relief channel 1010 back into the feed pipe 108 through the discharge hole 105. At the same time, the arc scraper of the cleaning piece 301 can clean the excess material inside the pressure relief channel 1010.

[0043] like Figure 10 and Figure 11 As shown, it also includes a locking mechanism 4 for locking the rotating frame 104. The locking mechanism 4 is arranged on the left part of the rotating frame 104. The locking mechanism 4 includes a rotating block 401. The rotating block 401 is mounted on the left part of the rotating frame 104. A rotating buckle 402 is slidably connected to the rotating block 401. A telescopic spring 404 is connected between the rotating buckle 402 and the inside of the rotating block 401. A fixed rod 403 is provided on the left part of the discharge pipe 109, and the fixed rod 403 and the rotating buckle 402 are snap-fitted.

[0044] When the material enters the feed pipe 108, two situations may occur. First, the flow rate of the material when entering the feed pipe 108 suddenly accelerates, causing the pressure value when entering the feed pipe 108 to rise rapidly, so that the corrugated rubber sleeve 202 will be quickly compressed, and the rotating frame 104 will also rotate counterclockwise rapidly. The rapid counterclockwise rotation of the rotating frame 104 will drive the rotating block 401 and the rotating buckle 402 to rotate counterclockwise rapidly. In this way, the rotating buckle 402 will be thrown outward under the action of centrifugal force, and the telescopic spring 404 will be stretched. When the rotating buckle 402 and the fixed rod 403 contacts, the fixed rod 403 is able to block the rotating buckle 402, and the rotating frame 104 is also stopped at this time. The rotating frame 104 just rotates 90 degrees counterclockwise, and the discharge hole 105 and the pressure relief channel 1010 are just in a connected state. After the rotating frame 104 stops, the rotating block 401 and the rotating buckle 402 also stop rotating. Under the action of the telescopic spring 404, the rotating buckle 402 is driven to move and reset to hook the fixed rod 403. In this way, under the card fit between the rotating buckle 402 and the fixed rod 403, the rotating frame 104 cannot be rotated clockwise to reset. , so that the pressure relief channel 1010 and the discharge hole 105 are always in a connected state, and the material is always relieved through the pressure relief channel 1010, so that the material can always flow back into the injection molding machine, avoiding excessive pressure and damage to the injection molding machine. In addition, people can judge that the pressure value of the material feed pipe 108 increases rapidly when the rotating buckle 402 hooks the fixing rod 403. People need to adjust the discharge speed of the injection molding machine to avoid the pressure being at a higher value than the value that will damage the feed pipe 108 and even affect the injection molding of the headrest; when people After adjusting the discharge speed of the injection molding machine, the rotating buckle 402 can be manually pulled outward to separate it from the fixed rod 403, and the telescopic spring 404 is stretched. Then, when the pressure inside the feed pipe 108 is lower than the elastic force of the elastic member 205, the sliding member 201 will be reset, thereby driving the rotating frame 104 to rotate clockwise and reset. The rotating frame 104 drives the rotating block 401 and the rotating buckle 402 to rotate and reset. People release the rotating buckle 402, and under the action of the telescopic spring 404, the rotating buckle 402 is driven to move and reset, and the discharge hole 105 and the pressure relief channel 1010 will stop being connected.

[0045] Second, when the material enters the feed pipe 108, the flow rate increases slowly and the pressure also increases slowly, then the corrugated rubber sleeve 202 will be slowly compressed, and then the rotating frame 104 will slowly rotate counterclockwise to connect the discharge hole 105 and the pressure relief channel 1010. The rotating frame 104 rotates slowly counterclockwise to drive the rotating block 401 and the rotating buckle 402 to rotate slowly counterclockwise. At this time, the rotation speed of the rotating buckle 402 is not enough to drive the rotating buckle 402 to be thrown out, so the rotating buckle 402 will not hook the fixed rod 403, so the discharge hole 105 and the pressure relief channel 1010 will not always remain connected. Once the pressure inside the feed pipe 108 is lower than the elastic force of the elastic member 205, the sliding member 201 will reset, and the discharge hole 105 and the pressure relief channel 1010 will stop being connected, and the pressure relief will stop.

[0046] like Figure 3 and Figure 12 As shown, it also includes a pressure measuring mechanism 5, which includes a moving part 501, which is slidably connected to the right part of the fixed disk 107, and a scale rod 502 is welded to the right end of the moving part 501, and the right part of the scale rod 502 passes through the fixed disk 107, and the right part of the fixed disk 107 is connected to a one-way air outlet valve 503. The gas on the right part of the fixed disk 107 is discharged through the one-way air outlet valve 503, and the external gas will not enter the fixed disk 107 through the one-way air outlet valve 503. A ventilation block 504 is provided on the right part of the fixed disk 107, and the ventilation block 504 is located on the left side of the one-way air outlet valve 503. An air vent 505 is provided on the right part of the upper mold 101, and the upper part of the air vent 505 is connected to the right part of the fixed disk 107. A reset spring 506 is connected between the left part of the ventilation block 504 and the right part of the moving part 501, and the one-way air outlet valve 503 is located on the right side of the ventilation block 504.

[0047] After the upper mold 101 moves downward and merges with the lower mold 102, the top of the lower mold 102 is just able to block the air vent 505. When the pressure value in the feed pipe 108 exceeds the maximum pressure value specified in the injection molding process, the material in the feed pipe 108 will squeeze the moving part 501 to the right. The moving part 501 moving to the right will drive the scale rod 502 to move to the right, and the return spring 506 is compressed. When the moving part 501 moves to the right, the air vent 505 is blocked by the top of the lower mold 102. Therefore, the moving part 501 can only discharge the gas through the one-way air outlet valve 503 when it moves to the right. When the moving part 501 moves to the right, it will drive the scale rod 502 to move to the right. People can judge the size of the pressure value generated inside the feed pipe 108 by checking the scale value extended from the right part of the scale rod 502. If the air pressure inside the feed pipe 108 drops, the material will not continue to squeeze the moving part 501. The hole 505 is blocked, and the gas will not enter the feed pipe 108 through the one-way air outlet valve 503. In this way, even if the material does not squeeze the moving part 501, the moving part 501 will not automatically move to the left and reset due to the force of the return spring 506, and the scale rod 502 will maintain the state after the pressure measurement and will not move to the left and reset. In this way, the scale rod 502 remains in a non-returning state, which makes it convenient for personnel to record the pressure value and avoid affecting the authenticity of the pressure measurement data due to the left movement and reset of the scale rod 502. People can also use the measured pressure value to timely regulate the flow rate of the material entering the feed pipe 108, thereby reducing the pressure. After the headrest injection molding is completed, the upper mold 101 can be moved upward and separated from the lower mold 102. After the air vent 505 is opened by the lower mold 102, under the action of the return spring 506, the moving part 501 and the scale rod 502 will be driven to move to the left and reset.

[0048] like Figure 13-15 As shown, it also includes an adjusting mechanism 6 for adjusting the flow rate of the material when it enters the feed pipe 108. The adjusting mechanism 6 includes an adjusting cylinder 601, which is rotatably connected to the top of the feed pipe 108. Two fixed rings 602 with holes are equidistantly connected to the upper inner part of the feed pipe 108. The inside of the adjusting cylinder 601 is connected to a rotating member 603 with holes. The rotating member 603 with holes and the fixed ring 602 with holes are movably connected. The rotating member 603 with holes is composed of three discs with holes and a connecting column. The three discs with holes and the two fixed rings 602 with holes are staggered. The three discs with holes are fixed on the connecting column at equal intervals. The uppermost disc with holes is fixed to the inside of the adjusting cylinder 601.

[0049] If it is necessary to speed up the flow rate of the material in the feed pipe 108, the adjusting cylinder 601 can be manually rotated to drive the perforated rotating part 603 to rotate, so that the hole on the perforated rotating part 603 and the hole on the perforated fixing ring 602 overlap. At this time, the hole that the material needs to pass through is in a straight line. At this time, the material will flow directly and quickly downward through the hole. At this time, the flow rate of the material is at its fastest. If the pressure value in the feed pipe 108 is relatively large, people can also drive the perforated rotating part 603 to rotate by rotating the adjusting cylinder 601, so that the hole on the perforated rotating part 603 and the hole on the perforated fixing ring 602 are slowly misaligned, so that the hole is a curved line. The greater the misalignment angle between the holes, the more curved the hole is as a curved line, and the slower the flow rate of the material. In summary, by adjusting the adjusting cylinder 601, the flow rate of the material entering the feed pipe 108 can be adjusted to adjust the pressure in the feed pipe 108.

[0050] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes made to the contents described in the claims of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A car seat headrest forming device, comprising a lower mold (102), wherein the lower mold (102) is slidably connected to an upper mold (101), and wherein: The invention also includes a fixed plate (107), wherein the fixed plate (107) is fixedly connected to the top of the upper mold (101), the fixed plate (107) and the upper mold (101) are communicated, the side of the fixed plate (107) away from the upper mold (101) is communicated with a feed pipe (108), the feed pipe (108) is connected to a discharge pipe (109), the side of the discharge pipe (109) away from the feed pipe (108) is provided with a valve (106), a pressure relief channel (1010) is provided in the discharge pipe (109), the pressure relief channel (1010) is communicated with the valve (106), and the pressure relief channel (1010) and The feed pipe (108) is connected, and a rotating frame (104) is connected to the discharge pipe (109) in a transverse rotational manner. The side of the rotating frame (104) close to the feed pipe (108) is rotatably connected to the feed pipe (108). The side of the rotating frame (104) away from the feed pipe (108) passes through the discharge pipe (109). A discharge hole (105) is opened on the side of the rotating frame (104) close to the feed pipe (108). The feed pipe (108) is provided with a pushing mechanism, and the pushing mechanism is squeezed by the pressure of the material, and the pushing mechanism drives the rotating frame (104) to rotate and block the feed pipe (108).

2. The automobile seat headrest forming device according to claim 1, characterized in that: The pushing mechanism includes a sliding member (201), the sliding member (201) is slidably connected to the feeding pipe (108), a corrugated rubber sleeve (202) is connected to the side of the feeding pipe (108) close to the sliding member (201), the sliding member (201) penetrates the corrugated rubber sleeve (202), an elastic member (205) is connected between the sliding member (201) and the fixed disk (107), and a rotating assembly for driving the rotating frame (104) to rotate is provided between the side of the sliding member (201) away from the corrugated rubber sleeve (202) and the side of the rotating frame (104) away from the feeding pipe (108).

3. The automobile seat headrest forming device according to claim 2, characterized in that: The rotating assembly includes a pulling frame (203), the pulling frame (203) is sleeved on the side of the sliding member (201) away from the corrugated rubber sleeve (202), the pulling frame (203) is provided with a threaded sleeve (204) on the side close to the rotating frame (104), the rotating frame (104) is rotatably connected to a ball (206) on the side away from the discharge hole (105), and the ball (206) and the threaded sleeve (204) are threadedly connected.

4. The automobile seat headrest forming device according to claim 3, characterized in that: The invention also includes an exhaust mechanism (3) for exhausting the air in the pressure relief channel (1010), the exhaust mechanism (3) is arranged in the discharge pipe (109), the exhaust mechanism (3) includes a cleaning member (301), the cleaning member (301) is slidably connected in the pressure relief channel (1010), the cleaning member (301) passes through the discharge pipe (109) on the side away from the discharge hole (105), the discharge pipe (109) is provided with an exhaust port (302) on the side away from the discharge hole (105), the exhaust port (302) is communicated with the pressure relief channel (1010), and the rotating frame (104) is provided with a one-way feed port (1111) on the side close to the discharge hole (105), and the one-way feed port (1111) is communicated with the pressure relief channel (1010).

5. The automobile seat headrest forming device according to claim 4, characterized in that: The invention also includes a locking mechanism (4) for locking the rotating frame (104), wherein the locking mechanism (4) is arranged on a side of the rotating frame (104) close to the pulling frame (203), and the locking mechanism (4) includes a rotating block (401), wherein the rotating block (401) is sleeved on a side of the rotating frame (104) close to the pulling frame (203), and a rotating buckle (402) is slidably connected in the rotating block (401), and a telescopic spring (404) is connected between the rotating buckle (402) and the rotating block (401), and a fixing rod (403) is provided on a side of the discharging pipe (109) close to the rotating block (401), and the fixing rod (403) and the rotating buckle (402) are snap-fitted.

6. The automobile seat headrest forming device according to claim 5, characterized in that: The invention also includes a pressure measuring mechanism (5) for measuring the pressure inside the feeding pipe (108), wherein the pressure measuring mechanism (5) includes a moving part (501), wherein the moving part (501) is slidably connected to the side of the fixed disk (107) away from the valve (106), and the side of the moving part (501) away from the feeding pipe (108) is connected to a scale rod (502), and the scale rod (502) passes through the fixed disk (107) on the side away from the moving part (501). A one-way air outlet valve (503) is connected to the side of the fixed disk (107) away from the movable part (501); a ventilation block (504) is provided on the side of the fixed disk (107) close to the one-way air outlet valve (503); a ventilation hole (505) is provided on the side of the upper mold (101) close to the ventilation block (504); the ventilation hole (505) is communicated with the fixed disk (107); and a return spring (506) is connected between the ventilation block (504) and the movable part (501).

7. The automobile seat headrest forming device according to claim 6, characterized in that: The invention also includes an adjusting mechanism (6) for adjusting the flow rate of the material when entering the feed pipe (108), the adjusting mechanism (6) includes an adjusting cylinder (601), the adjusting cylinder (601) is rotatably connected to the top of the feed pipe (108), and fixed rings (602) with holes are connected at equal intervals in the feed pipe (108), the adjusting cylinder (601) is connected to a rotating member (603) with holes, and the rotating member (603) with holes and the fixed ring (602) with holes are movably connected.

8. The automobile seat headrest forming device according to claim 1, characterized in that: It also includes a plurality of heating rods (103), and the plurality of heating rods (103) are uniformly inserted and connected to the discharge pipe (109) along the circumferential direction.

9. The automobile seat headrest forming device according to claim 3, characterized in that: The movement of the threaded sleeve (204) can drive the rotating frame (104) to rotate through the ball (206) within an angle range of 0-90 degrees.

10. The automobile seat headrest forming device according to claim 4, characterized in that: The cleaning member (301) is provided with an arc-shaped scraper made of elastic damping material on one side close to the one-way feed port (1111).

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