A demoulding mechanism for automobile headlight mold

Abstract

The present invention relates to the field of injection molds, and in particular to a demolding mechanism for a car lamp mold, comprising a body, a fixed mold, and a movable mold, wherein a push block is installed inside the movable mold through a push block support rod, and a plurality of push rods and a main excitation rod for an air duct are installed on one side of the push block, wherein the push rod and the main excitation rod for the air duct are respectively connected to a side push plate and a demolding plate arranged on one side of the movable mold. In the present invention, the push rod drives the side push plate to extend to demold the edge of the mold, and through the main excitation rod for the air duct, a spring assembly and other structural arrangements, after the side push plate is excited, the demolding plate in the inner module extends and demolds the middle part of the mold, and when the demolding plate is pushed out, the ejector pin is triggered to excite and compressed gas is introduced to assist demolding. Compared with the traditional demolding mechanism, this mechanism effectively improves the demolding efficiency by setting the demolding sequence and additionally introducing compressed gas to assist demolding during the demolding process. It not only has high stability and perfect functionality, but also can meet the demolding requirements of complex molds, improve the operation quality, and increase the molding accuracy.

Description

Technical Field

[0001] The invention relates to the technical field of injection molds, and in particular to a demoulding mechanism for an automobile lamp mold. Background Art

[0002] Car headlight covers play an important role in the car lighting system. Their main function is to prevent light from diverging and to better focus the light.

[0003] At present, the production and manufacturing process of automobile headlight covers is mostly completed by injection molding. Although the traditional injection molding process can meet the basic production needs, some traditional injection molds still have defects in actual use:

[0004] Among them, the demolding mechanism of the traditional injection mold is relatively simple in structure. Faced with the current various shapes and types of car lamp styles, it is difficult to meet the production and use needs, resulting in low quality of the finished injection molded parts. At the same time, the traditional injection molding demolding mechanism is mostly a single ejector and ejector plate demolding method, which has low functionality and stability. Due to the complex structure of the car lamp mold, it is easy to damage the finished product during the ejection process, resulting in low quality of the finished injection molded parts. Therefore, there is an urgent need for a demolding mechanism for automobile car lamp molds. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a demoulding mechanism for an automobile lamp mold.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A demoulding mechanism for a car lamp mold comprises a body, a fixed mold and a movable mold, wherein a push block is installed inside the movable mold through a push block support rod, and a plurality of push rods and a main excitation rod of an air duct are installed on one side of the push block, wherein the push rod and the main excitation rod of the air duct are respectively connected with a side push plate and a demoulding plate arranged on one side of the movable mold;

[0008] One end of the main excitation rod of the air duct is fixedly installed in the middle of the push block, and the other end is connected with the support excitation rod through the air inlet pipe. The support excitation rod and the main excitation rod of the air duct are connected by a compression spring, and an airway is opened in the middle of the main excitation rod of the air duct, and the airway is connected to the air inlet pipe set on one side. A trigger ejector pin is fixedly installed on one end of the air inlet pipe through the exhaust pipe, and the trigger ejector pin is movably installed in the air chamber guide channel opened in the middle of the support excitation rod through the air inlet pipe limit, and one side of the air chamber guide channel is connected with the air chamber, and a plurality of air outlet holes are opened on one side of the inner wall of the air chamber, and the air outlet holes are connected to the rod wall of the support excitation rod;

[0009] An outlet end is installed at one end of the air inlet pipe, the outlet end is communicated with the air passage inside the air inlet pipe, and an exhaust pipe is installed at the other end of the outlet end, a plurality of through grooves are provided on the outer side of the exhaust pipe, and a trigger ejector is installed at one end of the exhaust pipe, and a sealing head is installed at one end of the trigger ejector;

[0010] A fixed mold and a movable mold are respectively installed on one side of the machine body, wherein an inner mold is provided on the middle side of the movable mold, and an outer mold is installed at an outer limit away from the inner module, and a guide wedge is installed on the upper part of the outer module, and the guide wedge and the inclined guide column arranged on one side of the fixed mold serve as mutual guiding structures.

[0011] In addition, a preferred structure is that a molding groove is provided on one side of the fixed mold, an injection port is installed in the middle of the molding groove, and multiple card slots are provided on the upper and lower sides of the molding groove, a fitting groove is provided on one side of the card slot, and an inclined guide column is fixedly installed in the middle of the fitting groove.

[0012] In addition, a preferred structure is that a cavity one and a cavity two are respectively opened in the middle of the movable mold, wherein a plurality of push block support rods are horizontally fixedly installed on the upper and lower sides inside the cavity one, a push block is slidably installed on the upper limit position of the push block support rod, a main spring is installed on one side of the push block, the main spring is sleeved and installed on the outside of the push block support rod, and the other end of the main spring is installed on one side of the inner wall of the cavity one.

[0013] In addition, a preferred structure is that a push rod groove is opened on one side of the movable mold, the push rod groove is connected to the inside of the movable mold, and a main push rod is limitedly installed in the push rod groove, and the main push rod is fixedly installed on one side of the machine body.

[0014] In addition, a preferred structure is that guide grooves are provided on the upper and lower sides of the movable mold, the guide grooves are opened toward the fixed mold, and the guide grooves are inclined and used to guide and limit the inclined guide pillars.

[0015] In addition, a preferred structure is that a plurality of slide grooves 1 and 2 are respectively provided on one side of the movable mold, wherein an outer module is installed in the slide groove 2 by means of a slider 1 for limiting sliding, a guide wedge is fixedly installed on the upper part of the outer module by means of an installation foot, the guide wedge is installed in the slide groove 1 by means of an installation foot for limiting sliding, and a guide hole is provided in the middle of the guide wedge, and the other side of the guide hole is connected to the guide groove.

[0016] In addition, a preferred structure is that an outer module is installed at an outer limit position away from the inner module, and a molding cavity is formed between the outer module and the inner module.

[0017] In addition, the preferred structure is that multiple side push plate grooves are opened on both sides of the edge away from the inner module, and side push plates are embedded and installed in the side push plate grooves. One end of the side push plate is fixedly connected to the push rod, and the bottom wall of the side push plate is flush with the outer wall of the inner module.

[0018] In addition, a preferred structure is that a demoulding groove is opened in the middle of the inner module, a demoulding plate is embedded and installed in the demoulding groove, one end of the demoulding plate is connected to the support excitation rod, and the other end of the support excitation rod passes through the inner module and extends into the second cavity;

[0019] A resistance spring is installed at one end of the supporting excitation rod, and the other end of the resistance spring is connected to one side of the second inner wall of the cavity.

[0020] The beneficial effects of the present invention are:

[0021] In the present invention, during the demoulding process, the push rod drives the side push plate to extend to demould the edge of the mold, and through the main excitation rod of the air duct, the support excitation rod, the spring assembly and other structural settings, after the side push plate is excited, the demoulding plate in the inner module extends out and demoulds the middle part of the mold, and when the demoulding plate is excited and pushed out, the front ejector pin is triggered to excite and compressed gas is introduced to assist in demoulding. Compared with the traditional demoulding mechanism, this mechanism effectively improves the demoulding efficiency by setting the demoulding sequence and additionally introducing compressed gas to assist in demoulding during the demoulding process. It not only has high stability and perfect functionality, but also can effectively meet the demoulding needs of complex molds, improve operation quality, and increase molding accuracy.

[0022] At the same time, the setting of internal and external modules makes it more convenient to replace the mold later, makes the molding quality in the cavity more stable, and the integrity of the inner and outer walls of the mold after injection molding is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall structure of a demoulding mechanism for a car lamp mold proposed by the present invention;

[0024] Figure 2 This is a schematic diagram of the film bonding process structure proposed by the present invention;

[0025] Figure 3 This is a schematic diagram of the external structure of the fixed mold proposed by the present invention;

[0026] Figure 4 This is a plan view of the connection between the movable and fixed molds proposed by the present invention;

[0027] Figure 5 This is a schematic diagram of the external structure of the movable mold proposed by the present invention;

[0028] Figure 6 This is a schematic diagram of the connection structure of the inner and outer modules proposed by the present invention;

[0029] Figure 7 This is a schematic diagram of the cross-section of the connection between the movable and fixed molds proposed by the present invention;

[0030] Figure 8 This is a schematic diagram of the internal structure connection of the movable mold proposed by the present invention;

[0031] Fig. 9 A schematic diagram of the local internal structure of the movable mold proposed by the present invention;

[0032] Fig.10 This is a schematic diagram of the support excitation rod structure proposed by the present invention;

[0033] Fig.11 This is a schematic diagram of the trigger ejector pin connection structure proposed by the present invention.

[0034] In the figure: 1, machine body; 2, fixed mold; 3, movable mold; 4, injection port; 5, main ejector; 6, ejector slot; 7, mold slot; 8, inclined guide column; 9, fitting slot; 91, slot 1; 10, guide column; 11, guide wedge; 111, guide hole; 112, mounting foot; 12, outer module; 121, slider 1; 13, inner module; 131, demoulding slot; 14, demoulding plate; 15, slide slot 1; 151, slide slot 2; 16, air outlet; 17, side Push plate; 171, side push plate groove; 18, push rod; 19, guide groove; 20, push block support rod; 21, push block; 22, air duct main excitation rod; 221, support excitation rod; 23, main spring; 24, compression spring; 241, resistance spring; 25, air chamber; 26, air inlet pipe; 261, airway; 27, air outlet end; 28, exhaust pipe; 29, trigger ejector pin; 30, air chamber guide; 31, sealing head; 32, cavity one; 33, cavity two. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0036] Reference Figure 1-4 A demoulding mechanism for a car lamp mold includes a body 1, a fixed mold 2 is fixedly installed on one side of the body 1, a movable mold 3 is installed between the fixed mold 2 and the body 1 for limited movement, and the movable mold 3 and the fixed mold 2 realize basic mold closing operation.

[0037] Among them, a main ejector rod 5 is installed in the middle of one side of the machine body 1, and a movable mold 3 is arranged on the side away from the main ejector rod 5. An ejector rod groove 6 is opened at the position opposite to the main ejector rod 5, and the ejector rod groove 6 is used to adapt to the main ejector rod 5 to realize the ejection and demoulding operation.

[0038] Reference Figure 3 A groove 7 is provided on one side of the middle of the fixed mold 2, an injection port 4 is provided in the middle of the groove 7, and a card slot 91 is provided at both ends of the upper and lower sides of the groove 7, and a matching groove 9 is provided in the upper part of the card slot 91. An inclined guide column 8 is fixedly installed in the middle of the matching groove 9, and the inclined guide column 8 is used to guide and limit the guide wedge block 11.

[0039] A through hole is provided on one side of the upper portion of the fixed mold 2, and the through hole is used to fit with a guide post 10 provided on one side of the movable mold 3, thereby improving the stability during the closing of the mold.

[0040] Reference Figure 5-6 An inner module 13 is fixedly installed in the middle of the movable mold 3, and two slide grooves 151 are provided on both sides away from the inner module 13. An outer module 12 is installed in the slide groove 151 through a slider 121 for limited sliding. Both sides of the outer module 12 are installed on the outer wall of the fixed mold 2 through a slider 121 for limited sliding. A plurality of slots are provided at the upper part of the outer module 12, and a guide wedge 11 is fixedly installed in the slot through an installation foot 112, wherein the outer module 12 can be quickly disassembled through the installation foot 112, thereby increasing the convenience of replacing the mold later.

[0041] Among them, a plurality of guide grooves 19 are provided on the upper and lower sides away from the inner module 13, that is, on the middle part of the outer side of the fixed mold 2. The guide groove 19 is connected to the inside of the movable mold 3 and a slide groove 15 is provided on both sides of the outer wall of the guide groove 19. A guide wedge block 11 is installed in the slide groove 15 for limited sliding through an installation foot 112. A guide hole 111 is provided in the middle of the guide wedge block 11, and the guide hole 111 is connected to the internal guide groove 19.

[0042] A guide wedge 11 protrudes from one side of the mounting foot 112 , and the guide wedge 11 is always limited and slid on the outer wall of the guide groove 19 through the mounting foot 112 .

[0043] In the process of closing the mold, the mounting foot 112 is engaged with a clamping groove 91 provided on one side of the fixed mold 2.

[0044] Furthermore, a plurality of side push plate grooves 171 are provided on the mold walls on both sides of the adjacent edges of the inner module 13, and a side push plate 17 is installed on one side of the inner side of the side push plate groove 171 by limiting the position of the push rod 18, the bottom wall of the side push plate 17 is in contact with the inner module 13, and the side push plate 17 is embedded in the side push plate groove 171.

[0045] The outer modules 12 are arranged on the upper and lower sides away from the inner module 13 , and a cavity is formed between the outer module 12 and the inner module 13 .

[0046] Reference Figure 7 When the fixed mold 2 and the movable mold 3 are in the process of closing the film, the movable mold 3 moves toward the side of the fixed mold 2, and the inclined guide column 8 inclinedly arranged in the middle of the fixed mold 2 is docked with the guide wedge 11 arranged on the side of the movable mold 3, wherein the inclined guide column 8 passes through the guide hole 111 opened in the middle of the guide wedge 11 and extends into the guide groove 19 opened inside the movable mold 3, and under the guiding action of the inclined guide column 8, the guide wedge 11 moves inward and closes together until the upper and lower guide wedges 11 are completely merged and connected, and fit into the groove 7.

[0047] The guide wedge block 11 is sleeved and slid on the inclined guide column 8 during the movement, and the guide wedge block 11 is engaged with the engagement groove 9 provided at one end of the inclined guide column 8 and is engaged with each other.

[0048] Reference Figure 8-11 A cavity 32 is provided in the middle of the movable mold 3, and a push rod groove 6 is provided on one side of the cavity 32. A main push rod 5 is installed in the push rod groove 6 in a limited position, and a plurality of push block support rods 20 are installed at the upper and lower parts of the cavity 32. A push block 21 is slidably installed on the push block support rod 20 in an upper limit position. A main push rod 5 is provided on one side of the middle part away from the push block 21, and is connected to a main spring 23 on the other side of the push block 21, and the other side of the main spring 23 is connected to the inner wall of the cavity 32.

[0049] Furthermore, a push rod 18 and a main excitation rod 22 for the air duct are fixed to the middle of the push block 21, respectively, wherein one end of each push rod 18 passes through cavity 1 32 and cavity 2 33 respectively and is inserted into a side push plate groove 171 opened on one side of the movable mold 3, and at the same time, the push rod 18 and the side push plate 17 are connected to each other for ejecting and demolding the edge of the injection molded part.

[0050] A partition is provided between the cavity 1 32 and the cavity 2 33 .

[0051] Reference Figure 8 During the closing process of the fixed mold 2 and the movable mold 3 , the inclined guide column 8 provided on one side of the fixed mold 2 penetrates the guide wedge 11 and enters the guide groove 19 opened inside the fixed mold 2 .

[0052] Reference Figure 9-11 One end of the main excitation rod 22 of the air duct is connected to the push block 21, and the main excitation rod 22 of the air duct is connected to the external air pump equipment for delivering the jet. At the same time, the other end of the main excitation rod 22 of the air duct penetrates into the cavity 2 33 and is connected to the support excitation rod 221 through the compression spring 24. One side of the support excitation rod 221 passes through the outer wall of the movable mold 3 and penetrates into the demolding groove 131 opened and closed inside the inner module 13, and one end of the support excitation rod 221 is installed with a demolding plate 14, and the demolding plate 14 is fitted and engaged with the demolding groove 131.

[0053] Among them, an air intake pipe 26 is connected to one side of the air duct main excitation rod 22, and an air passage 261 is opened in the air intake pipe 26 and the other end of the air intake pipe 26 extends into an air chamber guide channel 30 opened inside the support excitation rod 221, and an exhaust pipe 28 is installed at one end of the air intake pipe 26, and a plurality of exhaust grooves are opened on the outside of the exhaust pipe 28, and one side of the exhaust pipe 28 is connected with the air passage 261, and at the same time, a trigger ejector pin 29 is fixedly installed on the other side of the exhaust pipe 28, and a sealing head 31 is fixedly installed on one end of the trigger ejector pin 29, and the sealing head 31 is limitedly slidably installed in the air chamber guide channel 30.

[0054] Among them, an outlet end 27 is installed on one side of the air inlet pipe 26, and the outlet end 27 is connected to the internal air channel 261 of the air inlet pipe 26, and the other side of the outlet end 27 is connected to the exhaust pipe 28 for conveying the gas to the exhaust pipe 28.

[0055] The support excitation rod 221 has an air chamber guide channel 30 and an air chamber 25 respectively formed inside. The air chamber guide channel 30 and the air chamber 25 are interconnected, and a plurality of air outlet holes 16 are formed on one side of the air chamber 25 .

[0056] A guide structure is provided at the connection between the air chamber guide channel 30 and the air chamber 25 , wherein the cross-sectional area of ​​the air chamber 25 is larger than the cross-sectional area of ​​the air chamber guide channel 30 .

[0057] Reference Fig. 9 The main excitation rod 22 of the air duct and the support excitation rod 221 are connected by a compression spring 24 and an air inlet pipe 26, and a chassis larger than the diameter of the rod body is provided at the opposite ends of the main excitation rod 22 of the air duct and the support excitation rod 221 to increase the contact surface between the main excitation rod 22 of the air duct and the support excitation rod 221.

[0058] Among them, a resistance spring 241 is installed on one side of the support excitation rod 221, the other end of the resistance spring 241 is connected to one side of the inner wall of the cavity 2 33, and a compression spring 24 is arranged on the side away from the resistance spring 241, wherein the elastic coefficient of the resistance spring 241 is higher than that of the compression spring 24, so that the compression spring 24 is deformed first during the film closing process.

[0059] In the present embodiment, the machine body 1 drives the movable mold 3 to move toward the side of the fixed mold 2 and perform the film closing injection molding process. In the actual operation process, the movable mold 3 is docked with the inclined guide column 8 set on the fixed mold 2 through the guide wedge block 11 set on one side during the movement, so that the inclined guide column 8 passes through the guide hole 111 opened inside the guide wedge block 11 and is inserted into the guide groove 19 connected to the guide hole 111. The guide groove 19 can effectively guide and accommodate the inclined guide column 8. Since the inclined guide column 8 is inclined, during the horizontal movement of the movable mold 3, the inclined guide column 8 guides and limits the guide wedge block 11, so that the guide wedge block 11 converts the horizontal variable into a vertical movement variable, thereby realizing the function of gradually retracting and locking the upper and lower outer modules 12.

[0060] At the same time, when the fixed mold 2 and the movable mold 3 are connected, the guide column 10 arranged on one side of the movable mold 3 is inserted into the hole opened on one side of the fixed mold 2, and the outer module 12 and the inner module 13 arranged on one side of the movable mold 3 are snap-fitted into the groove 7 opened on one side of the fixed mold 2 to prepare for injection molding. At the same time, the guide wedge block 11 arranged on the upper part of the outer module 12 and the mounting foot 112 connected to the bottom thereof are respectively snap-fitted into the fitting groove 9 and the snap-fit ​​groove 91 opened on the upper and lower parts of the groove 7, thereby achieving the tightness of the film between the fixed mold 2 and the movable mold 3.

[0061] Then the injection port 4 inside the fixed mold 2 delivers the raw material to the groove 7, and due to the arrangement of the outer module 12 and the inner module 13, the raw material is filled and molded through the cavity left between the modules, and the mold opening and demolding operation is performed after the corresponding working procedures.

[0062] Among them, during the demolding operation, the machine body 1 drives the movable mold 3 to move to the opposite direction of the fixed mold 2 for demolding, so that the fixed mold 2 and its corresponding guide member are separated from the fixed mold 2, and during the horizontal movement, the guide wedge block 11 set on one side of the movable mold 3 converts the horizontal variable into a vertical distance variable under the guiding action of the inclined guide column 8, so that the guide wedge block 11 gradually expands outward and separates from the outer wall of the molded injection molded part.

[0063] Among them, in actual application, through the coordinated guiding setting of the guide wedge block 11 and the inclined guide column 8, the outer module 12 can be stably and quickly demolding the outer wall of the injection molded part during the demolding process, and can effectively improve the demolding quality of the outer wall of the injection molded part, reducing the loss caused by traditional demolding.

[0064] At the same time, after the movable mold 3 travels a certain distance, the main ejector 5 provided on one side of the machine body 1 pushes into the ejector groove 6 provided on one side of the movable mold 3, and presses the push block 21 provided inside the movable mold 3. The push block 21 moves toward one side of the fixed mold 2 under the pressing action of the main ejector 5, and drives the ejector 18 and the main excitation rod 22 of the air duct provided on one side to move;

[0065] The push rod 18 extends to one side and drives the side push plate 17 to disengage from the side push plate groove 171. Since the side push plate 17 is flush with the outer wall of the inner module 13, the side push plate 17 presses the outer edge of the injection molded part on the inner module 13 to demould during the ejection process.

[0066] During the pushing process of the side push plate 17, the machine body 1 controls the external compressed air pump device to deliver compressed gas to the main excitation rod 22 of the air duct. At the same time, the push block 21 is connected to push the main excitation rod 22 of the air duct to move. During the movement of the main excitation rod 22 of the air duct, the main excitation rod 22 of the air duct applies a driving force to the compression spring 24 arranged on one side, and due to the support setting of the resistance spring 241 on the other side, the compression spring 24 is deformed and compressed, and the air inlet pipe 26 arranged inside the main excitation rod 22 of the air duct moves into the supporting excitation rod 221, wherein the air inlet pipe 26 is pushed. The air chamber guide channel 30 is moved horizontally in the support trigger rod 221, and one side of the air inlet pipe 26 is respectively connected to the exhaust pipe 28, the trigger ejector pin 29, and the sealing head 31. After the air inlet pipe 26 drives the sealing head 31 to move to a certain distance, the sealing head 31 extends out of the air chamber guide channel 30 and penetrates into the air chamber 25 connected to the air chamber guide channel 30. Since the cross-sectional areas of the air chamber guide channel 30 and the air chamber 25 are different, the compressed air passes from one side of the sealing head 31, enters the air chamber 25, and is discharged through the multiple air outlet holes 16 provided in the air chamber 25.

[0067] At the same time, during the pushing process of the main excitation rod 22 of the air duct, the support excitation rod 221 will continue to move and stimulate the air outlet 16 to release air during the movement. At the same time, the main excitation rod 22 of the air duct will be squeezed and contacted with the support excitation rod 221. At this time, the compression spring 24 has been compressed to the limit, and the resistance spring 241 is compressed and deformed during the pushing process. Since the support excitation rod 221 is ejected through the main excitation rod 22 of the air duct, the support excitation rod 221 drives the demolding plate 14 on one side to disengage from the demolding groove 131 opened in the middle of the inner module 13, and presses the injection molded parts on the inner module 13. Since the two sides of the injection molded parts have been pre-demolded by the side push plates 17, the injection molded parts are quickly demolded under the action of the compressed gas spraying and the ejection of the demolding plate 14, which can effectively prevent the molded body from deforming during the process of leaving the mold, thereby improving the precision and quality of the molded object.

[0068] In actual application, the compressed gas enters the air chamber guide channel 30 opened in the middle of the branch excitation rod 221 through the air duct main excitation rod 22 and the air channel 261 opened inside the air inlet pipe 26.

[0069] In actual application, the push block 21 squeezes the main spring 23 provided on the push block support rod 20 during demoulding, and generates a rebound force to satisfy the reset function after demoulding.

[0070] Among them, in actual application, the edge of the injection molded part is demoulded preferentially by the side push plate 17, which may help prevent the injection molded part from being deformed or damaged during the demoulding process.

[0071] In the present invention, during the demoulding process, the push rod 18 drives the side push plate 17 to extend to demould the edge of the mold, and through the main excitation rod 22 of the air duct, the support excitation rod 221, the spring assembly and other structural settings, after the side push plate 17 is excited, the demoulding plate 14 in the inner module 13 extends out and demoulds the middle part of the mold, and when the demoulding plate 14 is excited and pushed out, the ejector pin 29 is triggered to excite the front ejection and introduce compressed gas to assist in demoulding. Compared with the traditional demoulding mechanism, this mechanism effectively improves the demoulding efficiency by setting the demoulding sequence and additionally introducing compressed gas to assist in demoulding during the demoulding process. It not only has high stability and perfect functionality, but also can effectively meet the demoulding of complex molds, improve operation quality, and increase molding accuracy.

[0072] At the same time, the arrangement of the inner module 13 and the outer module 12 makes it more convenient to replace the mold later, makes the molding quality in the cavity more stable, and makes the inner and outer walls of the mold more integrated after injection molding.

[0073] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A demoulding mechanism for a car lamp mold, comprising a body (1), a fixed mold (2), and a movable mold (3), characterized in that: A push block (21) is installed inside the movable mold (3) through a push block support rod (20) to limit the position, and a plurality of push rods (18) and a main excitation rod (22) for the air duct are installed on one side of the push block (21), wherein the push rods (18) and the main excitation rod (22) for the air duct are respectively connected to a side push plate (17) and a stripper plate (14) provided on one side of the movable mold (3); One end of the air duct main excitation rod (22) is fixedly installed in the middle of the push block (21), and the other end is limitedly connected to the support excitation rod (221) through the air inlet pipe (26), the support excitation rod (221) and the air duct main excitation rod (22) are connected by a compression spring (24), and an air passage (261) is opened in the middle of the air duct main excitation rod (22), the air passage (261) is connected to the air inlet pipe (26) arranged on one side, one end of the air inlet pipe (26) is fixedly installed with a trigger ejector pin (29) through the exhaust pipe (28), and the trigger ejector pin (29) is limitedly installed in the air chamber guide channel (30) opened in the middle of the support excitation rod (221), and one side of the air chamber guide channel (30) is connected to the air chamber (25), and one side of the inner wall of the air chamber (25) is provided with a plurality of air outlet holes (16), and the air outlet holes (16) are connected to the rod wall of the support excitation rod (221); An outlet end (27) is installed at one end of the air inlet pipe (26), the outlet end (27) is communicated with an internal air passage (261) of the air inlet pipe (26), and an exhaust pipe (28) is installed at the other end of the outlet end (27), a plurality of through grooves are provided on the outer side of the exhaust pipe (28), and a trigger ejector pin (29) is installed at one end of the exhaust pipe (28), and a sealing head (31) is installed at one end of the trigger ejector pin (29); A fixed mold (2) and a movable mold (3) are respectively installed on one side of the machine body (1), wherein an inner mold block (13) is provided on one side of the middle of the movable mold (3), and an outer mold block (12) is installed at an outer limit position away from the inner mold block (13), and a guide wedge block (11) is installed on the upper part of the outer mold block (12), and the guide wedge block (11) and an inclined guide column (8) provided on one side of the fixed mold (2) are mutually guiding structures; A molding groove (7) is provided on one side of the fixed mold (2), an injection port (4) is installed in the middle of the molding groove (7), and a plurality of clamping grooves (91) are provided on the upper and lower sides of the molding groove (7), a fitting groove (9) is provided on one side of the clamping groove (91), and an inclined guide column (8) is fixedly installed in an inclined manner in the middle of the fitting groove (9); The middle part of the movable mold (3) is respectively provided with a cavity 1 (32) and a cavity 2 (33), wherein a plurality of push block support rods (20) are horizontally fixedly installed on the upper and lower sides of the cavity 1 (32), a push block (21) is slidably installed on the upper limit position of the push block support rod (20), a main spring (23) is installed on one side of the push block (21), the main spring (23) is sleeved and installed on the outside of the push block support rod (20), and the other end of the main spring (23) is installed on one side of the inner wall of the cavity 1 (32); A push rod groove (6) is provided on one side of the movable mold (3), the push rod groove (6) is communicated with the interior of the movable mold (3), and a main push rod (5) is installed in a limited position in the push rod groove (6), and the main push rod (5) is fixedly installed on one side of the machine body (1); The movable mold (3) is provided with guide grooves (19) on the upper and lower sides thereof, the guide grooves (19) are opened toward the fixed mold (2), and the guide grooves (19) are inclined and used to guide and limit the inclined guide pillars (8); A plurality of slide grooves (15) and slide grooves (151) are respectively provided on one side of the movable mold (3), wherein an outer module (12) is installed in the slide groove (151) in a limited sliding manner via a slider (121), a guide wedge (11) is fixedly installed on the upper part of the outer module (12) via a mounting foot (112), the guide wedge (11) is installed in the slide groove (15) in a limited sliding manner via the mounting foot (112), and a guide hole (111) is provided in the middle of the guide wedge (11), and the other side of the guide hole (111) is connected to the guide groove (19).

2. The automotive lamp mold demoulding mechanism according to claim 1, characterized in that: An outer module (12) is installed at an outer limit position away from the inner module (13), and a molding cavity is formed between the outer module (12) and the inner module (13).

3. The automotive lamp mold demoulding mechanism according to claim 1, characterized in that: A plurality of side push plate grooves (171) are provided on both sides of the adjacent edges away from the inner module (13), and a side push plate (17) is embedded in the side push plate groove (171), one end of the side push plate (17) is fixedly connected to the push rod (18), and the bottom wall of the side push plate (17) is flush with the outer wall of the inner module (13).

4. The automotive lamp mold demoulding mechanism according to claim 1, characterized in that: A demoulding groove (131) is provided in the middle of the inner module (13), a demoulding plate (14) is embedded and installed in the demoulding groove (131), one end of the demoulding plate (14) is connected to a support excitation rod (221), and the other end of the support excitation rod (221) passes through the inner module (13) and extends into the second cavity (33); A resistance spring (241) is installed at one end of the supporting excitation rod (221), and the other end of the resistance spring (241) is connected to one side of the inner wall of the second cavity (33).

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