One-time forming mold and demolding system for automotive upholstery

Abstract

The invention relates to the technical field of forming molds and demolding, in particular to an automobile interior trim part one-time forming mold and demolding system.The automobile interior trim part one-time forming mold and demolding system.The automobile interior trim part one-time forming mold comprises a lower mold, an upper mold, a demolding assembly, a driving assembly and a mold locking assembly; an opening groove is formed in the bottom wall of the lower mold, the demolding assembly comprises a spray head and a pressure air supply mechanism, the spray head comprises a spray barrel, the spray barrel is vertically and slidably installed in the opening groove, and the pressure air supply mechanism is installed on the operation table. The injection molding part can be prevented from being damaged due to movement of the spray head, rapid demolding is achieved while the injection molding part is prevented from being damaged through cooperation of sequential switching of the two working states of descending and jacking of the spray cylinder, sealing in the mold is kept in the air injection process, and it is ensured that the injection molding part is completely wrapped by an air film.

Description

Technical Field

[0001] The invention relates to the technical field of forming moulds and demoulding, and in particular to a one-step forming mould and demoulding system for automobile interior decoration parts. Background Art

[0002] Automotive interior parts refer to various parts used for decoration, comfort and functionality inside the car, mainly including instrument interior panels, door interior panels and ceiling interior panels, etc. In the production process of automotive interior parts, the injection molding process is often used. Its principle is to heat the plastic raw material to a molten state, inject it into the mold cavity through an injection molding machine, cool and solidify it in the mold, and after the injection molded part is cooled, demold it, then remove the gate, flash and other excess parts, and perform grinding, polishing and other treatments.

[0003] The advantage of using injection molding to produce automotive interior parts is that it can form automotive interior parts in one step, improve production efficiency, and the injection molded parts have high dimensional accuracy and complex shapes, which can meet different performance and appearance requirements. However, at present, there are certain problems in the injection molding process for automotive interior parts: due to insufficient cooling of the injection molded parts or excessive pressure in the mold cavity, the injection molded parts are prone to adhesion with the inner wall of the mold, which causes the injection molded parts to deform or even tear during demolding operations, seriously reducing the yield rate.

[0004] In the prior art, there is a demoulding system that can fill air between the injection molded part and the mold before demoulding, so that an air film is formed between the injection molded part and the mold, and the injection molded part and the mold are slowly isolated by air to prevent damage to the injection molded part. However, this solution still has certain defects. First, in order to maintain the sealing inside the mold during injection molding, this solution mostly uses an ejection nozzle, which pushes the injection molded part upward, extends the nozzle into the mold and injects air, resulting in the injection molded part still being easily damaged when the lifted part of the injection molded part adheres to the surrounding mold inner wall; second, due to the complex shape of the injection molded part, when air is injected between the mold and the injection molded part, the introduced air is easy to escape in the same direction, resulting in insufficient pressure, so that a complete air film cannot be formed to wrap the injection molded part, and the remaining parts that are not in contact with the air are difficult to demould. Summary of the invention

[0005] The purpose of the present invention is to provide a one-time molding mold and demoulding system for automotive interior decoration parts, which improves the demoulding effect by filling air into the mold, while ensuring that the air film completely wraps the injection molded part and preventing the injection molded part from being damaged due to the movement of the nozzle.

[0006] To achieve this object, the present invention adopts the following technical solutions: Provided is a one-time forming mold for automotive interior decoration parts, characterized in that it includes a lower mold, an upper mold, a demoulding assembly, a driving assembly and a locking assembly, the bottom of the lower mold is fixedly connected to the top of an operating table, the upper mold can be vertically movably installed on the operating table, a groove is provided on the bottom wall of the lower mold, the demoulding assembly includes a nozzle and a pressure air supply mechanism, the nozzle includes a spray barrel, the spray barrel can be vertically slidably installed in the groove, the pressure air supply mechanism is installed on the operating table, the pressure air supply mechanism is used to pump air into the spray barrel, the driving assembly is installed on the operating table, the driving assembly is used to drive the upper mold to move, the locking assembly is installed on the lower mold, the locking assembly is used to lock the upper mold and the lower mold with each other, when the top of the spray barrel is flush with the bottom wall of the lower mold, the nozzle can be in a sealed state, when the spray barrel is located at the bottom of the groove, the inside of the nozzle is connected to the inside of the lower mold, and when the top of the spray barrel is located inside the lower mold, the inside of the nozzle is connected to the inside of the lower mold.

[0007] Preferably, the nozzle also includes a top plate, a vertical rod, a plurality of limit blocks, a tension spring and a hydraulic rod. The bottom of the top plate is slidably connected to the inner wall of the vertical rod, the outer periphery of the nozzle is slidably connected to the inner wall of the slot and fits together, the outer periphery of the top plate is slidably connected to the top of the inner wall of the nozzle, the bottom of the vertical rod passes through the bottom wall of the nozzle and is fixedly connected to the bottom wall of the slot, the nozzle is slidably connected to the outer periphery of the vertical rod, a plurality of limit blocks are distributed in a circle in the nozzle and are fixedly connected to the inner wall of the nozzle, a plurality of penetrating circular holes are provided on the inner wall of the nozzle, the circular holes are located at the bottom of the limit blocks, the tension spring is sleeved on the outer periphery of the bottom of the top plate, one end of the tension spring is fixedly connected to the bottom of the top plate, the other end of the tension spring is fixedly connected to the bottom wall of the vertical rod, the hydraulic bottom is fixedly connected to the bottom wall of the slot, and the top of the telescopic end of the hydraulic rod is fixedly connected to the bottom of the nozzle.

[0008] Preferably, the pressure air supply mechanism includes an air pump and an air pipe. The bottom of the air pump is fixedly connected to the bottom wall of the operating table. The air outlet of the air pump is connected to one end of the air pipe. The other end of the air pipe passes through the operating table and the side wall of the lower mold and extends into the groove. The end of the air pipe located in the groove passes through the side wall of the spray barrel and is slidably connected to it.

[0009] Preferably, the nozzle also includes a first spring and a piston plate, the piston plate is slidably connected to the periphery of the vertical rod, the periphery of the piston plate is in contact with the inner wall of the spray barrel, the first spring is sleeved on the periphery of the vertical rod, one end of the first spring is fixedly connected to the bottom of the piston plate, the other end of the first spring is fixedly connected to the bottom wall of the spray barrel, and the piston plate is located at the bottom of the air pipe.

[0010] Preferably, the driving assembly includes a first screw, a second screw, a pair of guide rods and a motor. The top of the first screw is rotatably connected to the operating table, the bottom of the first screw is coaxially connected to the top of the second screw, the bottom of the second screw is rotatably connected to the operating table, the bottom of the motor is fixedly connected to the top of the operating table, the output shaft of the motor passes through the top wall of the operating table and is coaxially connected to the top of the first screw, the guide rods are symmetrically distributed on both sides of the first screw and are fixedly connected to the operating table, the upper mold includes a template, a core and a support plate, the support plate is slidably connected to the periphery of the guide rods, the support plate is threadedly connected to the periphery of the first screw, a pair of round rods are fixedly connected to the top of the template, the support plate is slidably connected to the periphery of the round rods, the periphery of the core is slidably connected to the template, the top of the core passes through the top wall of the template and conflicts with the bottom of the support plate.

[0011] Preferably, the demolding assembly also includes an ejection mechanism, which includes a pair of ejection blocks, an H-shaped frame and a pair of second springs, one end of the H-shaped frame is slidably connected to the periphery of the guide rod, a pair of grooves are opened on the bottom wall of the lower mold, the ejection block is slidably connected to the grooves, the bottom of the ejection block passes through the bottom walls of the grooves and is fixedly connected to the top of the other end of the H-shaped frame, the second spring is sleeved on the periphery of the bottom of the ejection block, one end of the second spring is fixedly connected to the lower mold, and the other end of the second spring is fixedly connected to the top of the H-shaped frame, and the driving assembly also includes a lifting plate, the lifting plate is slidably connected to the periphery of the guide rod, the lifting plate is threadedly connected to the periphery of the second screw, and the top of the lifting plate is in conflict with the bottom of the H-shaped frame.

[0012] Preferably, the mold locking assembly includes a locking ring, a locking hook, a rotating shaft and a pair of torsion springs. The top of the locking ring is fixedly connected to the bottom of the template. An L-shaped slot is provided on the top of the lower mold. The locking ring is plug-fitted into the L-shaped slot. The top of the locking hook is snap-fitted into the bottom of the locking ring. The rotating shaft passes through the middle of the locking hook and is fixedly connected thereto. The rotating shaft is rotatably connected to the inner wall of the L-shaped slot. The torsion spring is sleeved on the periphery of the rotating shaft. One end of the torsion spring is fixedly connected to the inner wall of the L-shaped slot, and the other end of the torsion spring is fixedly connected to the locking hook.

[0013] Preferably, the locking assembly also includes a piston rod, one side of the piston rod is in conflict with the bottom of the locking hook, a cavity is opened inside the lower mold, the other side of the piston rod passes through the side wall of the L-shaped groove and is slidably connected to the inner wall of the cavity, and an air vent is opened on one side of the spray barrel, the air vent is located at the bottom of the piston plate and is connected to the cavity.

[0014] The present invention also provides a demoulding system for a one-time molding mold for an automobile interior decoration part, comprising the following steps: step 1: a driving component is arranged on an operating table, which can drive the upper mold to move up and down, and perform mold opening and closing operations, so that the automobile interior decoration part can be injection molded; step 2: after the mold closing is completed, the upper mold and the lower mold can be locked with each other through the locking mold component arranged on the operating table, and after the injection molding is completed, the mold core can move up and down in the template to provide a stroke for the movement of the injection molded part; step 3: after the injection molded part is cooled, the demoulding component arranged on the operating table can inject air into the mold, so that the injection molded part is separated from the mold, which is convenient for demoulding, and through the cooperation of the two working states of the nozzle being converted in sequence, the injection molded part can be quickly demoulded while preventing damage to the injection molded part; step 4: while injecting air into the mold, the inside of the mold remains sealed, so that incomplete separation of the injection molded part due to gas escape can be avoided; step 5: after the injection molded part is completely separated from the mold, the locking mold component is unlocked under the action of air pressure, and then the driving component drives the upper mold to separate from the lower mold, and at the same time drives the ejection mechanism to work, so that the injection molded part is ejected from the lower mold.

[0015] Beneficial effects of the present invention: 1. After the injection molding is completed, the present invention injects air into the mold through the nozzle, so that the injection molded part is separated from the mold, which is convenient for demolding, and the nozzle has two working states. First: the nozzle slides downward to form a gap between the injection molded part and the nozzle, and high-pressure air is injected from the gap to separate the part of the injection molded part close to the top plate from the lower mold and the top plate, which can prevent the part of the injection molded part close to the nozzle from tearing. Second: the nozzle rises to its top and enters the lower mold, slightly lifting the bottom of the injection molded part. At this time, the circular hole is connected to the interior of the lower mold, and air is quickly injected into the bottom of the injection molded part through multiple circular holes to form an air film to wrap the injection molded part, so that it is separated from the mold as a whole. Through the coordination of the two working states, it is possible to prevent the damage of the injection molded part while quickly demolding.

[0016] 2. When the present invention injects air into the mold, the mold interior is kept sealed by the mold locking assembly. When the air filled into the mold moves in the same direction due to the complex shape of the mold interior, the air filled into the mold cannot leak out because the mold interior is kept sealed, and thus gradually fills the gap between the molded part and the mold. The mold core moves upward, so that the molded part is fully separated from the mold, thereby avoiding incomplete separation of the molded part due to gas escape. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 The three-dimensional structure of the present invention is shown in FIG. Figure 1 .

[0019] Figure 2 The three-dimensional structure of the present invention is shown in FIG. Figure 2 .

[0020] Figure 3 It is a cross-sectional view of the operating table structure of the present invention.

[0021] Figure 4 It is a schematic diagram of the structure of the driving component of the present invention.

[0022] Figure 5 This is a cross-sectional view of the lower mold structure of the present invention. Figure 1 .

[0023] Figure 6 This is a cross-sectional view of the lower mold structure of the present invention. Figure 2 .

[0024] Figure 7 This is a cross-sectional view of the lower mold structure of the present invention. Figure 3 .

[0025] Figure 8 It is a cross-sectional view of the spray barrel structure of the present invention.

[0026] Fig. 9 yes Figure 5 A magnified view of the structure at center.

[0027] Fig.10 This is a cross-sectional view of the lower mold structure of the present invention. Figure 4 .

[0028] Fig.11 It is a cross-sectional view of the template structure of the present invention.

[0029] In the figure: 1. Operation table; 10. Lower mold; 100. Mouth slot; 101. Groove; 102. L-shaped slot; 103. Cavity; 11. Upper mold; 110. Template; 111. Mold core; 112. Support plate; 113. Round rod; 2. demoulding assembly; 20. nozzle; 200. spray gun; 2000. round hole; 2001. air vent; 201. top plate; 202. vertical rod; 203. limit block; 204. tension spring; 205. hydraulic rod; 206. first spring; 207. piston plate; 21. pressure air supply mechanism; 210. air pump; 211. air pipe; 22. ejection mechanism; 220. top block; 221. H-shaped frame; 222. second spring; 3. Driving assembly; 30. First screw rod; 31. Second screw rod; 32. Guide rod; 33. Motor; 34. Lifting plate; 4. Locking mold assembly; 40. Locking ring; 41. Locking hook; 42. Rotating shaft; 43. Torsion spring; 44. Piston rod. DETAILED DESCRIPTION

[0030] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0031] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on this patent; in order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0032] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0033] In the description of the present invention, unless otherwise clearly specified and limited, if the term "connection" or the like appears to indicate the connection relationship between components, the term should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two components or the interaction relationship between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] like Figures 1 to 11 As shown: A one-time molding mold and demoulding system for automobile interior decoration parts, comprising a lower mold 10, an upper mold 11, a demoulding assembly 2, a driving assembly 3 and a clamping assembly 4. The bottom of the lower mold 10 is fixedly connected to the top of an operating table 1. The upper mold 11 can be vertically movably installed on the operating table 1. A slot 100 is provided on the bottom wall of the lower mold 10. The upper mold 11 can be vertically moved up and down by the driving assembly 3 to realize the opening and closing of the mold, thereby performing injection molding processing on the automobile interior decoration parts. The demoulding assembly 2 includes a nozzle 20 and a pressure air supply mechanism 21. The nozzle 20 includes a spray barrel 200. The spray barrel 200 can be vertically slidably installed in the slot 100. After the injection molding is completed, air is injected into the mold through the nozzle 20, so that the injection molded part is separated from the mold, which is convenient for demoulding. The nozzle 20 has two working states. First, the spray barrel 200 is slid downward so that its top falls to the bottom of the top plate 201, thereby creating a gap between the injection molded part and the spray head 20. At this time, the spray head 20 is connected to the inside of the lower mold 10. By injecting high-pressure air, the part of the injection molded part close to the top plate 201 is separated from the lower mold 10 and the top plate 201, which can prevent the part of the injection molded part close to the spray head 20 from being torn. Second, after the top of the top plate 201 is separated from the injection molded part, the spray barrel 200 is raised to its top and enters the inside of the lower mold 10. At the same time, the limit block 203 pushes the top plate 201 to rise with the spray barrel 200, and the bottom of the injection molded part is slightly lifted. At this time, the circular hole 2000 is separated from the slot 100 and connected to the inside of the lower mold 10. Air is quickly injected into the bottom of the injection molded part through multiple circular holes 2000 to form an air film to wrap the injection molded part, so that it is separated from the mold as a whole. Through the cooperation of the two working states that are converted in sequence, it is possible to prevent the damage of the injection molded part while quickly demolding it. A pressure air supply mechanism 21 is installed on the operating table 1, and the pressure air supply mechanism 21 is used to pump air into the spray barrel 200. The driving component 3 is installed on the operating table 1, and the driving component 3 is used to drive the upper mold 11 to move. The locking component 4 is installed on the lower mold 10, and the locking component 4 is used to lock the upper mold 11 and the lower mold 10 with each other. When the top of the spray barrel 200 is flush with the bottom wall of the lower mold 10, the spray head 20 can be in a sealed state. At this time, the top of the top plate 201 is flush with the bottom wall of the lower mold 10, the top of the limit block 203 is in contact with the bottom of the top plate 201, and the outer periphery of the top plate 201 is in contact with the inner wall of the spray barrel 200. The spray barrel 200 cooperates with the top plate 201 to block the slot 100. At the same time, the inside of the slot 100 and the spray barrel 200 are isolated from the inside of the lower mold 10 by the top plate 201, and the inside of the mold is in a sealed state, so that the automotive interior decoration parts can be injection molded.When the spray barrel 200 is located at the bottom of the slot 100, the interior of the spray head 20 is connected to the interior of the lower mold 10. At this time, the spray barrel 200 and the stopper 203 are separated from the top plate 201, and the interior of the spray barrel 200 is connected to the interior of the lower mold 10. The spray barrel 200 and the top plate 201 are both located inside the slot 100. There is a gap between the top plate 201 and the inner wall of the slot 10. High-pressure air can enter the lower mold 10 through the gap to separate it from the injection molded part, and the injection of air by the gap generated by the spray barrel 200 descending can avoid damage to the injection molded part when the spray barrel 20 is ejected. When the top of the spray barrel 200 is located inside the lower mold 10, the interior of the spray head 20 is connected to the interior of the lower mold 10. At this time, the top of the limit block 203 and the bottom of the top plate 201 are in conflict with each other, the top plate 201 is separated from the mouth groove 100, and the circular hole 2000 is connected to the inside of the lower mold 10. After preliminary demolding, the part of the bottom of the injection molded part close to the top plate 201 has been separated from the bottom wall of the lower mold 10 and the top plate 201. The spray gun 200 pushes the mouth groove 100 and cooperates with the top plate 201 to slightly lift the center of the bottom of the injection molded part, and then air can be quickly injected through multiple circular holes 2000 to complete demolding.

[0035] like Figures 1 to 8 As shown: The nozzle 20 also includes a top plate 201, a vertical rod 202, a plurality of limit blocks 203, a tension spring 204 and a hydraulic rod 205. The bottom of the top plate 201 is slidably connected to the inner wall of the vertical rod 202, the periphery of the spray barrel 200 is slidably connected to the inner wall of the slot 100 and fits each other, the periphery of the top plate 201 is slidably connected to the top of the inner wall of the spray barrel 200, the bottom of the vertical rod 202 passes through the bottom wall of the spray barrel 200 and is fixedly connected to the bottom wall of the slot 100, the spray barrel 200 is slidably connected to the periphery of the vertical rod 202, and the plurality of limit blocks 203 are arranged in a manner that the spray barrel 200 is slidably connected to the inner wall of the slot 100. The circumference is distributed in the spray barrel 200 and is fixedly connected to the inner wall of the spray barrel 200. The inner wall of the spray barrel 200 is provided with a plurality of penetrating circular holes 2000, and the circular holes 2000 are located at the bottom of the limit block 203. The tension spring 204 is sleeved on the outer periphery of the bottom of the top plate 201. One end of the tension spring 204 is fixedly connected to the bottom of the top plate 201, and the other end of the tension spring 204 is fixedly connected to the bottom wall of the vertical rod 202. The hydraulic bottom is fixedly connected to the bottom wall of the slot 100, and the top of the telescopic end of the hydraulic rod 205 is fixedly connected to the bottom of the spray barrel 200. When the hydraulic rod 205 is working, its telescopic end can push the spray barrel 200 to slide up and down along the slot 100, so as to realize the switching of the two working states of the spray head 20. When the top plate 201 rises, the tension spring 204 is stretched. After the demoulding is completed, the spray barrel 200 descends, and the rebound of the tension spring 204 can drive the top plate 201 to descend stably and reset.

[0036] like Figures 1 to 3 As shown: The pressure air supply mechanism 21 includes an air pump 210 and an air pipe 211. The bottom of the air pump 210 is fixedly connected to the bottom wall of the operating table 1. The air outlet of the air pump 210 is connected to one end of the air pipe 211. The other end of the air pipe 211 passes through the operating table 1 and the side wall of the lower mold 10 and extends into the slot 100. The end of the air pipe 211 located in the slot 100 passes through the side wall of the spray barrel 200 and is slidably connected thereto. The air pipe 211 is always connected to the inside of the spray head 20, so that the spray barrel 200 can slide up and down freely, so that the air pump 210 works, and the external air is pumped into the air pipe 211 and flows into the spray barrel 200, thereby entering the mold and performing the demoulding operation.

[0037] like Figures 1 to 8 As shown: The nozzle 20 further includes a first spring 206 and a piston plate 207. The piston plate 207 is slidably connected to the periphery of the vertical rod 202. The periphery of the piston plate 207 is in contact with the inner wall of the spray barrel 200. The first spring 206 is sleeved on the periphery of the vertical rod 202. One end of the first spring 206 is fixedly connected to the bottom of the piston plate 207. The other end of the first spring 206 is fixedly connected to the bottom wall of the spray barrel 200. The piston plate 207 is located at the bottom of the air delivery pipe 211. The air pressure injected into the mold can be adjusted by setting the piston plate 207 and the first spring 206. When the air pressure is too high, the piston plate 207 is squeezed and slides down, and the first spring 206 is compressed. When the air pressure is stable, the first spring 206 rebounds and the piston plate 207 is reset, thereby preventing the excessive pulling force caused by excessive air pressure when separating the injection molded parts and causing tearing.

[0038] like Figures 1 to 11 As shown: The driving assembly 3 includes a first screw 30, a second screw 31, a pair of guide rods 32 and a motor 33. The top of the first screw 30 is rotatably connected to the operating table 1, the bottom of the first screw 30 is coaxially connected to the top of the second screw 31, the bottom of the second screw 31 is rotatably connected to the operating table 1, and the bottom of the motor 33 is fixedly connected to the top of the operating table 1. The output shaft of the motor 33 passes through the top wall of the operating table 1 and is coaxially connected to the top of the first screw 30. The guide rods 32 are symmetrically distributed on both sides of the first screw 30 and are fixedly connected to the operating table 1. When the motor 33 is powered on and working, its output shaft can drive the first screw 30 and the second screw 31 to rotate at the same time. The upper mold 11 includes a template 110, a core 111 and a support plate 112. The support plate 112 is slidably connected to the outer periphery of the guide rod 32. The support plate 112 is threadedly connected to the outer periphery of the first screw 30. A pair of round rods 113 are fixedly connected to the top of the template 110. The support plate 112 is slidably connected to the outer periphery of the round rods 113. The outer periphery of the core 111 is slidably connected to the template 110. The top of the core 111 passes through the top wall of the template 110 and contacts the bottom of the support plate 112. When the first screw 30 rotates, the support plate 112 is driven to slide up and down along the guide rod 32 through the threaded transmission between the first screw 30 and the support plate 112. When the support plate 112 moves down, it drives the template 110 and the core 111 to descend at the same time. After the upper mold 11 and the lower mold 10 collide with each other, the support plate 112 continues to move down until its bottom and the top of the core 111 collide with each other. At the same time, the locking assembly 4 works to lock the template 110 and the lower mold 10 to ensure that the upper mold 11 is fixed and stationary during injection molding. After the injection molded part is cooled, the support plate 112 moves up to separate its bottom from the core 111. At this time, the locking assembly 4 fixes the template 110, and the inside of the mold is still in a sealed state, and the core 111 can move slightly up and down in the template 110, thereby absorbing the micro-stroke generated by the injection molded part during the injection of air. Finally, the locking assembly 4 is unlocked, and the support plate 112 drives the upper mold 11 to move up for mold opening.

[0039] like Figures 1 to 10 As shown: The demoulding assembly 2 also includes an ejection mechanism 22, which includes a pair of ejector blocks 220, an H-shaped frame 221 and a pair of second springs 222. One end of the H-shaped frame 221 is slidably connected to the periphery of the guide rod 32. A pair of grooves 101 are provided on the bottom wall of the lower mold 10. The ejector block 220 is slidably connected to the groove 101. The bottom of the ejector block 220 passes through the bottom wall of the groove 101 and is fixedly connected to the top of the other end of the H-shaped frame 221. The second spring 222 is sleeved on the periphery of the bottom of the ejector block 220. One end of the second spring 222 is fixedly connected to the lower mold 10, and the other end of the second spring 222 is fixedly connected to the top of the H-shaped frame 221. When the mold is opened, the H-shaped frame 221 is moved up, driving the ejector block 220 to slide upward to lift the injection molded part, and the second spring 222 is compressed to facilitate demoulding and taking. Then the second spring 222 rebounds, and the ejector block 220 descends and resets. The driving assembly 3 also includes a lifting plate 34, which is slidably connected to the outer periphery of the guide rod 32, and is threadedly connected to the outer periphery of the second screw rod 31, and the top of the lifting plate 34 is in conflict with the bottom of the H-shaped frame 221. When the second screw rod 31 rotates, the lifting plate 34 slides up and down along the guide rod 32 through the threaded transmission between it and the lifting plate 34, and the lifting plate 34 pushes the H-shaped frame 221 to move upward when it rises, thereby driving the ejection mechanism 22 to work. The lifting plate 34 moves in the same direction as the support plate 112 and the stroke of the lifting plate 34 is smaller than that of the support plate 112, so that the ejector block 220 is ejected while the mold is opened, so that the injection molded part is separated from the lower mold 10 and will not conflict with the upper mold 11.

[0040] like Figures 1 to 9 As shown: The mold locking assembly 4 includes a locking ring 40, a locking hook 41, a rotating shaft 42 and a pair of torsion springs 43. The top of the locking ring 40 is fixedly connected to the bottom of the template 110. An L-shaped slot 102 is provided at the top of the lower mold 10. The locking ring 40 is plug-fitted into the L-shaped slot 102. The top of the locking hook 41 is snap-fitted into the bottom of the locking ring 40. The rotating shaft 42 passes through the middle of the locking hook 41 and is fixedly connected thereto. The rotating shaft 42 is rotatably connected to the inner wall of the L-shaped slot 102. The torsion spring 43 is sleeved on the outer periphery of the rotating shaft 42. One end of the torsion spring 43 is fixedly connected to the inner wall of the L-shaped slot 102, and the other end of the torsion spring 43 is fixedly connected to the locking hook 41. After the upper mold 11 and the lower mold 10 are fitted, the lock ring 40 is inserted into the L-shaped slot 102 and squeezes the lock hook 41, pushing it to rotate a certain angle around the shaft 42, and the torsion spring 43 is twisted. Then the lock ring 40 continues to descend, and the torsion spring 43 rebounds to drive the shaft 42 and the lock hook 41 to rotate, so that the top of the lock hook 41 and the bottom of the lock ring 40 are mutually engaged, thereby locking the upper mold 11 and the lower mold 10 to each other and maintaining the seal inside the mold. When the air filled into the mold moves in the same direction due to the complex shape inside the mold, the air filled into the mold cannot leak out because the mold remains sealed, and thus gradually fills the gap between the injection molded part and the mold, and the mold core 111 moves up, so that the injection molded part and the mold are fully separated, avoiding incomplete separation of the injection molded part due to gas escape.

[0041] like Figures 1 to 9 As shown: The mold locking assembly 4 also includes a piston rod 44, one side of which is in conflict with the bottom of the lock hook 41. A cavity 103 is provided inside the lower mold 10. The other side of the piston rod 44 passes through the side wall of the L-shaped slot 102 and is slidably connected to the inner wall of the cavity 103. A vent hole 2001 is provided on one side of the spray barrel 200. The vent hole 2001 is located at the bottom of the piston plate 207 and is connected to the cavity 103. When the injection molded part is completely separated from the mold, as the air continues to fill the mold, the pressure increases, squeezing the piston plate 207 to make it drop to the bottom of the vent hole 2001. The excess air enters the cavity 103 through the vent hole 2001 and pushes the piston rod 44 to move horizontally, thereby pushing the lock hook 41 to rotate around the rotating shaft 42 to complete unlocking. Then the upper mold 11 is separated from the lower mold 10, the pressure disappears, and the piston plate 207 is reset.

[0042] The present embodiment also provides a demoulding system for a one-time molding mold for automotive interior parts, comprising the following steps: step one: a driving assembly 3 is provided on the operating table 1, which can drive the upper mold 11 to move up and down to perform mold opening and closing operations, so that the automotive interior parts can be injection molded; step two: after the mold closing is completed, the upper mold 11 and the lower mold 10 can be locked with each other through the clamping assembly 4 provided on the operating table 1, and after the injection molding is completed, the mold core 111 can move up and down in the template 110 to provide a stroke for the movement of the injection molded part; step three: after the injection molded part is cooled, the mold core 111 is moved up and down in the template 110 through the clamping assembly 4 provided on the operating table 1. The demoulding component 2 can inject air into the mold to separate the injection molded part from the mold for easy demoulding, and through the cooperation of the two working states of the nozzle 20 being switched in sequence, it can prevent the injection molded part from being damaged while quickly demoulding. Step four: while injecting air into the mold, the inside of the mold remains sealed to avoid incomplete separation of the injection molded part due to gas escape. Step five: after the injection molded part is completely separated from the mold, the locking component 4 is unlocked under the action of air pressure, and then the driving component 3 drives the upper mold 11 to separate from the lower mold 10, and at the same time drives the ejection mechanism 22 to work to eject the injection molded part from the lower mold 10.

[0043] It should be noted that the above specific implementations are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art should understand that various modifications, equivalent substitutions, changes, etc. can be made to the present invention. However, as long as these changes do not deviate from the spirit of the present invention, they should be within the scope of protection of the present invention. In addition, some terms used in the specification and claims of this application are not limiting, but are only for the convenience of clearly describing the positional relationship and function between the various components.

Claims

1. A one-step forming mold for automobile interior decoration parts, characterized in that: The invention comprises a lower mold (10), an upper mold (11), a demoulding assembly (2), a driving assembly (3) and a clamping assembly (4); the bottom of the lower mold (10) is fixedly connected to the top of an operating table (1); the upper mold (11) is vertically movably mounted on the operating table (1); a groove (100) is provided on the bottom wall of the lower mold (10); the demoulding assembly (2) comprises a nozzle (20) and a pressure air supply mechanism (21); the nozzle (20) comprises a nozzle barrel (200); the nozzle barrel (21) comprises a nozzle head (201) and a pressure air supply mechanism (21); the nozzle head ... pressure air supply mechanism (21); the nozzle head (20) comprises a pressure air supply mechanism (21); the nozzle head (20) comprises a pressure air supply mechanism (21); the nozzle head (20) comprises a pressure air supply mechanism (21); the pressure air supply mechanism (21) comprises a pressure air supply mechanism (21); the pressure air supply mechanism (21) comprises a pressure air supply mechanism (21); the pressure air supply mechanism (21) comprises a pressure air supply mechanism (21); the pressure air supply mechanism (21) comprises a pressure air supply mechanism (21); the pressure air supply mechanism (21) comprises a pressure 00) is vertically slidably installed in the slot (100), a pressure air supply mechanism (21) is installed on the operating table (1), the pressure air supply mechanism (21) is used to pump air into the spray barrel (200), a driving component (3) is installed on the operating table (1), the driving component (3) is used to drive the upper mold (11) to move, and a clamping component (4) is installed on the lower mold (10), the clamping component (4) is used to lock the upper mold (11) and the lower mold (10) with each other; When the top of the spray barrel (200) is flush with the bottom wall of the lower mold (10), the spray head (20) can be in a sealed state; When the spray barrel (200) is located at the bottom of the slot (100), the interior of the spray head (20) is in communication with the interior of the lower mold (10); When the top of the spray barrel (200) is located inside the lower mold (10), the interior of the spray head (20) is connected to the interior of the lower mold (10).

2. The one-step forming mold for automobile interior decoration parts according to claim 1, characterized in that: The nozzle (20) further comprises a top plate (201), a vertical rod (202), a plurality of stop blocks (203), a tension spring (204) and a hydraulic rod (205); the bottom of the top plate (201) is slidably connected to the inner wall of the vertical rod (202); the periphery of the nozzle barrel (200) is slidably connected to the inner wall of the slot (100) and fits with each other; the periphery of the top plate (201) is slidably connected to the top of the inner wall of the nozzle barrel (200); the bottom of the vertical rod (202) passes through the bottom wall of the nozzle barrel (200) and is fixedly connected to the bottom wall of the slot (100); the nozzle barrel (200) is slidably connected to the periphery of the vertical rod (202); the plurality of stop blocks (204) are slidably connected to the inner wall of the slot (100); 3) are distributed in a circle inside the spray barrel (200) and are fixedly connected to the inner wall of the spray barrel (200), the inner wall of the spray barrel (200) is provided with a plurality of penetrating circular holes (2000), the circular holes (2000) are located at the bottom of the limit block (203), the tension spring (204) is sleeved on the outer periphery of the bottom of the top plate (201), one end of the tension spring (204) is fixedly connected to the bottom of the top plate (201), the other end of the tension spring (204) is fixedly connected to the bottom wall of the vertical rod (202), the hydraulic bottom is fixedly connected to the bottom wall of the slot (100), and the top of the telescopic end of the hydraulic rod (205) is fixedly connected to the bottom of the spray barrel (200).

3. The one-step forming mold for automobile interior decoration parts according to claim 1, characterized in that: The pressure air supply mechanism (21) comprises an air pump (210) and an air supply pipe (211). The bottom of the air pump (210) is fixedly connected to the bottom wall of the operating table (1). The air outlet of the air pump (210) is connected to one end of the air supply pipe (211). The other end of the air supply pipe (211) passes through the side wall of the operating table (1) and the lower mold (10) and extends into the slot (100). The end of the air supply pipe (211) located in the slot (100) passes through the side wall of the spray barrel (200) and is slidably connected thereto.

4. The one-step forming mold for automobile interior decoration parts according to claim 3, characterized in that: The spray head (20) further comprises a first spring (206) and a piston plate (207); the piston plate (207) is slidably connected to the periphery of the vertical rod (202); the periphery of the piston plate (207) and the inner wall of the spray barrel (200) are mutually fitted; the first spring (206) is sleeved on the periphery of the vertical rod (202); one end of the first spring (206) is fixedly connected to the bottom of the piston plate (207); the other end of the first spring (206) is fixedly connected to the bottom wall of the spray barrel (200); and the piston plate (207) is located at the bottom of the gas transmission pipe (211).

5. The one-step forming mold for automobile interior decoration parts according to claim 4, characterized in that: The driving assembly (3) comprises a first screw rod (30), a second screw rod (31), a pair of guide rods (32) and a motor (33); the top of the first screw rod (30) is rotatably connected to the operating table (1); the bottom of the first screw rod (30) is coaxially connected to the top of the second screw rod (31); the bottom of the second screw rod (31) is rotatably connected to the operating table (1); the bottom of the motor (33) is fixedly connected to the top of the operating table (1); the output shaft of the motor (33) passes through the top wall of the operating table (1) and is coaxially connected to the top of the first screw rod (30); the guide rods (32) are symmetrically distributed on both sides of the first screw rod (30) and are connected to the operating table (1). The workbench (1) is fixedly connected, and the upper mold (11) comprises a template (110), a mold core (111) and a support plate (112). The support plate (112) is slidably connected to the periphery of the guide rod (32). The support plate (112) is threadedly connected to the periphery of the first screw rod (30). A pair of round rods (113) are fixedly connected to the top of the template (110). The support plate (112) is slidably connected to the periphery of the round rods (113). The periphery of the mold core (111) is slidably connected to the template (110). The top of the mold core (111) passes through the top wall of the template (110) and contacts the bottom of the support plate (112).

6. The one-step forming mold for automobile interior decoration parts according to claim 5, characterized in that: The demoulding assembly (2) further comprises an ejection mechanism (22), the ejection mechanism (22) comprising a pair of ejection blocks (220), an H-shaped frame (221) and a pair of second springs (222), one end of the H-shaped frame (221) being slidably connected to the periphery of the guide rod (32), a pair of grooves (101) being formed on the bottom wall of the lower mold (10), the ejection block (220) being slidably connected to the grooves (101), the bottom of the ejection block (220) passing through the bottom wall of the grooves (101) and being fixedly connected to the top of the other end of the H-shaped frame (221) Then, the second spring (222) is sleeved on the outer periphery of the bottom of the top block (220), one end of the second spring (222) is fixedly connected to the lower mold (10), and the other end of the second spring (222) is fixedly connected to the top of the H-shaped frame (221). The driving component (3) also includes a lifting plate (34), the lifting plate (34) is slidably connected to the outer periphery of the guide rod (32), the lifting plate (34) is threadedly connected to the outer periphery of the second screw rod (31), and the top of the lifting plate (34) and the bottom of the H-shaped frame (221) are in conflict with each other.

7. The one-step forming mold for automobile interior decoration parts according to claim 5, characterized in that: The mold locking assembly (4) comprises a locking ring (40), a locking hook (41), a rotating shaft (42) and a pair of torsion springs (43); the top of the locking ring (40) is fixedly connected to the bottom of the template (110); the top of the lower mold (10) is provided with an L-shaped slot (102); the locking ring (40) is plug-fitted with the L-shaped slot (102); the top of the locking hook (41) is snap-fitted with the bottom of the locking ring (40); the rotating shaft (42) passes through the middle of the locking hook (41) and is fixedly connected thereto; the rotating shaft (42) is rotatably connected to the inner wall of the L-shaped slot (102); the torsion spring (43) is sleeved on the outer periphery of the rotating shaft (42); one end of the torsion spring (43) is fixedly connected to the inner wall of the L-shaped slot (102); and the other end of the torsion spring (43) is fixedly connected to the locking hook (41).

8. The one-step forming die for automobile interior decoration parts according to claim 7, characterized in that: The mold locking assembly (4) further comprises a piston rod (44), one side of the piston rod (44) abuts against the bottom of the locking hook (41), a cavity (103) is provided inside the lower mold (10), the other side of the piston rod (44) passes through the side wall of the L-shaped slot (102) and is slidably connected to the inner wall of the cavity (103), and a vent hole (2001) is provided on one side of the spray barrel (200), the vent hole (2001) is located at the bottom of the piston plate (207) and is connected to the cavity (103).

9. A demoulding system for a one-step molding mold for automotive interior parts, characterized in that: The method comprises the following steps: Step 1: a driving assembly (3) is arranged on the operating table (1), which is capable of driving the upper mold (11) to move up and down to perform mold opening and closing operations, thereby enabling injection molding of automobile interior decoration parts; Step 2: After the mold is closed, the upper mold (11) and the lower mold (10) can be locked with each other through the mold locking assembly (4) arranged on the operating table (1), and after the injection molding is completed, the mold core (111) can move up and down in the mold plate (110) to provide a travel for the movement of the injection molded part; Step 3: After the molded part is cooled, air can be injected into the mold through the demoulding assembly (2) provided on the operating table (1), so that the molded part is separated from the mold, which facilitates demoulding. In addition, the two working states of the nozzle (20) are switched in sequence, so that the molded part can be quickly demoulded while preventing damage to the molded part. Step 4: While injecting air into the mold, the inside of the mold remains sealed to avoid incomplete separation of the injection molded parts due to gas escape; Step 5: After the injection molded part is completely separated from the mold, the mold locking assembly (4) is unlocked under the action of air pressure, and then the driving assembly (3) drives the upper mold (11) to separate from the lower mold (10), and at the same time drives the ejection mechanism (22) to work, so as to eject the injection molded part from the lower mold (10).

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