A high-precision continuous injection mold structure for precision structural parts

Abstract

The present application relates to the technical field of injection mold structure, in particular to a high-precision continuous injection mold structure for precision structural parts, comprising: a main body component, including a front mold frame, a concave mold frame and a punch mold frame arranged at the end of the front mold frame, and a rear mold frame arranged at the end of the punch mold frame; a pushing component, including a moving plate, an inner wall of the moving plate is provided with an active cavity and the inner wall of the active cavity is also provided with a jacking structure; in the present application, the moving plate is driven by an oil cylinder to move up and down on the inner wall of the punch mold frame. When the injection molding is completed, the moving plate drives the ejector rod to lift upward, so that the structural parts can be smoothly demolded from the punch mold frame before the material strip is pulled, effectively avoiding the problem of material strip breakage caused by adhesion of the structural parts when pulling the material strip. When the injection port is blocked, the jacking structure can perform a secondary jacking action, and the ejector rod enters the injection port under the drive of the moving plate, and then the lifting plate drives the guide block to move, so that the scraper opens outward inside the ejector rod and fits the inner wall of the injection port.

Description

Technical Field

[0001] This application relates to the technical field of injection mold structures, especially a high-precision continuous material injection mold structure for precision structural parts. Background Art

[0002] In the field of manufacturing precision structural parts, injection molds, as key tools, directly affect product quality and production efficiency. With the rapid development of technology, more stringent requirements have been put forward for the precision, quality, and production efficiency of precision structural parts in various industries.

[0003] Currently, during the continuous material injection process, after injection molding, the structural parts are prone to sticking to the mold surface. When pulling the material tape, this sticking situation is likely to cause the material tape to break, which not only results in waste of raw materials but also seriously affects the continuity of production and significantly reduces production efficiency. In addition, during the injection molding process, the injection port is frequently blocked due to reasons such as plastic residue and impurity mixing. Once the injection port is blocked, conventional molds need to disassemble the entire mold and then clean the injection port, which is a cumbersome process that requires a large amount of time and manpower.

[0004] Chinese Patent with the authorization announcement number CN108973024B discloses a material tape type injection mold. This injection mold includes a lower mold base and a mold frame arranged below the lower mold base. The upper end surface of the lower mold base is provided with a "return" shaped installation frame. The upper end surface of the lower mold base is provided with several partition members to form a mold cavity. The mold core is arranged in the mold cavity. The installation frame is provided with a limiting member for the material tape to pass through on one side of the mold core, and the limiting member is linked to an implanting mechanism that drives the material tape to move up and down. By driving the material tape to move up and down through the implanting mechanism and automatically entering the mold cavity for injection molding, compared with the traditional pressing method, it can effectively avoid damage to the material tape when entering the mold cavity and improve the qualified product rate.

[0005] However, there are still some technical problems in this existing technology: Although this mold reduces the damage to the material tape when entering the mold cavity by driving the material tape to move through the implanting mechanism, after injection molding, it cannot help the material tape to demold to prevent adhesion. Summary of the Invention

[0006] In view of the problems existing in the above-mentioned existing technology, this application is proposed.

[0007] To solve the above technical problems, this application provides the following technical solution: A high-precision continuous material injection mold structure for precision structural parts, which includes a main body component, including a front mold frame, a concave mold frame and a convex mold frame provided at the end of the front mold frame, and a rear mold frame provided at the end of the convex mold frame;

[0008] A pushing assembly provided on the inner wall of the punch frame includes a moving plate, an inner wall of the moving plate is provided with a moving cavity and an inner wall of the moving cavity is also provided with a lifting structure;

[0009] The inner wall of the front mold frame is provided with an injection molding structure and the injection molding structure is connected with the female mold frame. The injection molding of the structural parts is completed by the cooperation of the female mold frame and the male mold frame. After the injection molding is completed, the jacking structure is driven to rise inside the male mold frame by the oil cylinder to lift the structural parts and demould them from the male mold frame. When the injection molding port provided on the end face of the female mold frame is blocked, the injection molding port is cleared by the jacking structure.

[0010] As a preferred solution of the high-precision continuous injection mold structure for precision structural parts described in this application, the movable plate moves on the inner wall of the cavity opened on the inner wall of the punch frame, the internal array of the movable plate is provided with a push rod and the end of the push rod extends into the mold cavity provided on the end face of the punch frame, and the push rod extends from the inside of the mold cavity for the detachment of the injection molded part.

[0011] As a preferred solution of the high-precision continuous injection mold structure for precision structural parts described in the present application, wherein: the lifting structure includes a guide block movably arranged inside the movable cavity, the guide block is affected by a lifting plate arranged inside the movable cavity, the end face of the lifting plate is provided with a pushing plate and the end of the pushing plate extends into the groove opened at the end of the guide block and slides with it, the guide block moves at the end of the pushing plate and pushes the ejector rod to move.

[0012] As a preferred solution of the high-precision continuous injection mold structure for precision structural parts described in this application, the inner wall of the guide block is also provided with an inclined sliding surface, and the inclined sliding surface cooperates with the inclined surface provided on the outer wall of the push plate to push the guide block to move horizontally.

[0013] As a preferred solution of the high-precision continuous injection mold structure for precision structural parts described in the present application, wherein: a lifting column is provided on the inner wall of the push rod, the end of the lifting column extends into the limiting groove opened on the end face of the guide block, the end of the lifting column is sleeved with a second joint and the end of the second joint is connected to a transmission gear, the transmission gear is engaged with the rack provided at the end of the guide block, and when the end of the lifting column slides along the limiting groove, the second joint is rotated on the outer wall of the lifting column through the engagement of the rack and the transmission gear.

[0014] As a preferred solution of the high-precision continuous injection mold structure for precision structural parts described in the present application, wherein: the inner wall of the active cavity is provided with an inclined groove and the outer wall of the inclined groove is connected to a transverse groove, the outer wall of the guide block is provided with a sliding column and the end of the sliding column extends to the inside of the inclined groove and slides with it, the guide block is driven by the push plate to move inside the active cavity, and the sliding column slides in the inclined groove and enters into the inside of the transverse groove.

[0015] As a preferred solution of the high-precision continuous injection mold structure for precision structural parts described in the present application, wherein: the push rod is arranged on the inner wall of the moving plate and the inner wall of the push rod is provided with a built-in cavity for the movement of the lifting column, the outer wall of the push rod is provided with a slot and the inner wall of the slot is hinged with a scraper, the inner wall of the scraper is provided with a connecting cavity and the inner wall of the connecting cavity is hinged with a connecting rod, the other end of the connecting rod is hinged to the outer wall of the lifting column, and when the inner wall of the built-in cavity rises, the lifting column causes the scraper to open outward through the connecting rod.

[0016] As a preferred solution of the high-precision continuous injection mold structure for precision structural parts described in this application, wherein: a first joint is provided at the end of the push rod, the first joint is opposite to the second joint, and when the lifting column slides along the lifting surface provided on the outer wall of the guide block, the second joint moves up and engages with the first joint.

[0017] As a preferred solution of the high-precision continuous injection mold structure for precision structural parts described in this application, the injection structure includes an injection hole and an injection channel opened on the end face of the front mold frame, and the injection channel is connected to the injection port opened on the inner wall of the concave mold frame.

[0018] As a preferred solution of the high-precision continuous injection mold structure for precision structural parts described in this application, wherein: the end face of the rear mold frame is provided with a carrier plate and the moving plate is located on the end face of the carrier plate, the end face of the carrier plate is also provided with a fixed column and the outer wall of the fixed column is provided with a first elastic part.

[0019] The beneficial effects of the present application are as follows: In the present application, the moving plate is driven by the oil cylinder to move up and down on the inner wall of the punch frame. When the injection molding is completed, the moving plate drives the ejector rod to lift upward, which can smoothly demold the structural parts from the punch frame before the material strip is pulled, effectively avoiding the problem of the material strip being broken due to the adhesion of the structural parts when the material strip is pulled. When the injection molding port is blocked, the lifting structure can perform a secondary lifting action, and the ejector rod enters the injection molding port under the drive of the moving plate, and then the lifting plate drives the guide block to move, so that the scraper opens outward inside the ejector rod and fits the inner wall of the injection molding port. The ejector rod is driven to rotate by the transmission gear to realize the cleaning of the inner wall of the injection molding port by the scraper, without the need to disassemble the mold additionally, saving cleaning time and labor costs, while ensuring the smooth progress of the injection molding work and reducing production stagnation caused by the blockage of the injection molding port. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0021] Figure 1 This is a schematic diagram of the overall structure of a high-precision continuous injection mold structure for precision structural parts in this application;

[0022] Figure 2 This is a schematic diagram of the structure of the injection molding structure in this application;

[0023] Figure 3 This is a schematic diagram of the exploded structure of the main components in this application;

[0024] Figure 4 A side sectional view of the punch frame in this application;

[0025] Figure 5 Schematic diagram of the internal structure of the sports board in this application;

[0026] Figure 6 This is a schematic diagram of the structure of the guide block in this application;

[0027] Figure 7 This is a schematic diagram of the side structure of the guide block in this application;

[0028] Figure 8 A side cross-sectional view of the ejector pin in this application;

[0029] Figure 9 for Figure 8 A magnified schematic diagram of the structure at point A in the middle.

[0030] DESCRIPTION OF REFERENCE NUMERALS: 100, main assembly; 101, front mold frame; 1011, injection hole; 1012, injection channel; 102, female mold frame; 1021, injection port; 103, male mold frame; 1032, mold cavity; 1033, cavity; 104, rear mold frame; 1042, carrier plate; 1043, fixing column; 1044, first elastic member;

[0031] 200, pushing assembly; 201, moving plate; 2011, movable cavity; 2012, inclined groove; 2013, transverse groove; 202, lifting plate; 2021, pushing plate; 2022, inclined surface; 203, guide block; 2031, groove; 2032, inclined sliding surface; 2033, limiting groove; 2034, lifting surface; 2035, rack; 2036, sliding column; 204, push rod; 2041, built-in cavity; 2042, slot; 2043, scraper; 2044, connecting cavity; 2045, first joint; 205, lifting column; 2051, connecting rod; 2052, second joint; 2053, transmission gear; 2054, second elastic member. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the drawings in the specification.

[0033] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0034] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present application. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0035] Example 1

[0036] This is the first embodiment of the present application, which provides a high-precision continuous injection mold structure for precision structural parts.

[0037] Specifically, refer to Figure 1-Figure 3 The main body assembly 100 includes a front mold frame 101, a concave mold frame 102 and a punch mold frame 103 provided at the end of the front mold frame 101, and a rear mold frame 104 provided at the end of the punch mold frame 103;

[0038] The pushing assembly 200 provided on the inner wall of the punch frame 103 includes a moving plate 201, an inner wall of the moving plate 201 is provided with a moving cavity 2011 and an inner wall of the moving cavity 2011 is also provided with a lifting structure;

[0039] An injection molding structure is provided on the inner wall of the front mold frame 101 and the injection molding structure is connected to the die frame 102. The injection molding of the structural parts is completed by the cooperation of the die frame 102 and the punch frame 103. After the injection molding is completed, the jacking structure is driven up by the oil cylinder inside the punch frame 103 to lift the structural parts and demould them from the punch frame 103. When the injection molding port 1021 provided on the end face of the die frame 102 is blocked, the injection molding port 1021 is cleared by the jacking structure.

[0040] Among them, when the material strip enters and is aligned with the surface of the punch frame 103, the front mold frame 101 above drives the die frame 102 to press down, cooperates with the punch frame 103 to press tightly, and performs injection molding on the structural parts on the material strip through the injection molding structure. When the injection molding is completed and cooled, the front mold frame 101 pulls up and drives the die frame 102 to separate from the punch frame 103. At this time, the structural parts still stay on the surface of the punch frame 103. At this time, the structural parts are pushed by the jacking structure inside the active cavity 2011, so that the structural parts are separated from the surface of the punch frame 103. Before the material strip is pulled, the structural parts are demoulded from the punch frame 103 to avoid adhesion and breakage of the material strip during pulling. Under normal circumstances, the lifting structure protrudes a short distance from the surface of the punch frame 103 and only completes the demoulding work of the structural parts. When the injection molding structure is blocked by adhesion, the material strip is removed from the punch frame 103, and then the front mold frame 101 drives the die frame 102 and the punch frame 103 to complete the mold closing. Through the secondary lifting action of the lifting structure, the lifting structure completes the cleaning work of the blocked injection molding structure.

[0041] Example 2

[0042] This is the second embodiment of the present application, which is implemented based on the previous embodiment.

[0043] Specifically, refer to Figures 4 to 6 The moving plate 201 moves on the inner wall of the cavity 1033 opened on the inner wall of the punch frame 103. The internal array of the moving plate 201 is provided with a push rod 204 and the end of the push rod 204 extends into the mold cavity 1032 set on the end face of the punch frame 103. The push rod 204 extends from the inside of the mold cavity 1032 for the injection molded part to be detached.

[0044] Among them, the moving plate 201 can move up and down on the inner wall of the punch frame 103 driven by the cylinder. The four walls of the moving plate 201 are in contact with the four walls of the cavity 1033. The push rods 204 are arranged in an array inside the moving plate 201. When the moving plate 201 is driven by the cylinder to move upward, the push rods 204 are lifted upward together with the moving plate 201, and the top rises from the mold cavity 1032 to push the injected structural parts to be demolded from the mold cavity 1032.

[0045] Preferably, the lifting structure includes a guide block 203 movably arranged inside the movable cavity 2011, and the guide block 203 is affected by the lifting plate 202 arranged inside the movable cavity 2011. The end face of the lifting plate 202 is provided with a pushing plate 2021 and the end of the pushing plate 2021 extends into the groove 2031 opened at the end of the guide block 203 and slides with it. The guide block 203 moves at the end of the pushing plate 2021 and pushes the jacking rod 204 to move.

[0046] There are multiple guide blocks 203 arrayed, each facing the mold cavity 1032 on the surface of the punch frame 103 . The guide blocks 203 drive the ejector rod 204 to move, pushing the structural component to be demoulded from the mold cavity 1032 .

[0047] The lifting plate 202 is driven by another oil cylinder inside the moving plate 201 and can rise inside the moving plate 201. After the moving plate 201 is raised, it can rise again inside the active cavity 2011 inside the moving plate 201. Through the rise of the lifting plate 202, the pushing plate 2021 on its surface pushes the guide block 203 to slide inside the active cavity 2011.

[0048] When the push plate 2021 rises, the guide block 203 will slide obliquely upward and then move in the horizontal direction, and at the same time, the push rod 204 will move synchronously with the guide block 203.

[0049] The inner wall of the guide block 203 is further provided with an inclined sliding surface 2032 , which cooperates with the inclined surface 2022 provided on the outer wall of the pushing plate 2021 to push the guide block 203 to move horizontally.

[0050] The inclined surface 2022 of the outer wall of the push plate 2021 cooperates with the inclined sliding surface 2032 of the inner wall of the guide block 203. Figure 6 As shown, the inclined surface 2022 is located on the right side of the push plate 2021, and the inclined sliding surface 2032 is located on the left side of the guide block 203. The guide block 203 first translates relative to the push plate 2021 at the top position of the push plate 2021 and moves in an oblique upward direction inside the active cavity 2011. When the inclined surface 2022 contacts the inclined sliding surface 2032, the guide block 203 moves horizontally in the active cavity 2011.

[0051] A lifting column 205 is provided on the inner wall of the top rod 204, and the end of the lifting column 205 extends into the limiting groove 2033 opened on the end face of the guide block 203. A second joint 2052 is sleeved on the end of the lifting column 205, and the end of the second joint 2052 is connected to a transmission gear 2053. The transmission gear 2053 is engaged with the rack 2035 provided at the end of the guide block 203. When the end of the lifting column 205 slides along the limiting groove 2033, the second joint 2052 is rotated on the outer wall of the lifting column 205 through the engagement of the rack 2035 and the transmission gear 2053.

[0052] Among them, the lifting column 205 moves up and down on the inner wall of the top rod 204. The lifting and lowering of the top rod 204 is affected by the lifting and lowering of the moving plate 201, and the lifting and lowering of the lifting column 205 is determined by the guide block 203. The bottom end position of the lifting column 205 is located in the limit groove 2033 on the surface of the guide block 203. Under the influence of the limit groove 2033, it only slides inside the limit groove 2033.

[0053] The second joint 2052 is fixed at the bottom of the lifting column 205 and moves along with the lifting column 205, moving from the bottom of the guide block 203 to the top. When the transmission gear 2053 below the second joint 2052 reaches the top of the guide block 203, it engages with the rack 2035 above the guide block 203. The movement of the guide block 203 causes the transmission gear 2053 to rotate, thereby driving the second joint 2052 to rotate.

[0054] Reference Figures 5 to 7 The inner wall of the movable cavity 2011 is provided with an inclined groove 2012 and the outer wall of the inclined groove 2012 is connected to the transverse groove 2013. The outer wall of the guide block 203 is provided with a sliding column 2036 and the end of the sliding column 2036 extends into the interior of the inclined groove 2012 and slides with it. The guide block 203 is driven by the push plate 2021 to move inside the movable cavity 2011, and the sliding column 2036 slides in the inclined groove 2012 and enters into the transverse groove 2013.

[0055] Among them, the inclined groove 2012 and the transverse groove 2013 are a whole, forming a complete slideway, and the sliding column 2036 on the outer wall of the guide block 203 slides inside the inclined groove 2012. When the push plate 2021 pushes the guide block 203, the guide block 203 moves upward inside the active cavity 2011. At the same time, the guide block 203 is affected by the inclined groove 2012 and moves laterally relative to the push plate 2021. The groove 2031 and the top of the push plate 2021 slide relative to each other. When the sliding column 2036 slides into the interior of the transverse groove 2013, the inclined surface 2022 and the inclined sliding surface 2032 fit together and slide. At this time, the guide block 203 stops the upward movement and moves laterally.

[0056] Reference Figures 8 and 9 The push rod 204 is arranged on the inner wall of the moving plate 201 and the inner wall of the push rod 204 is provided with a built-in cavity 2041 for the movement of the lifting column 205. The outer wall of the push rod 204 is provided with a slot 2042 and the inner wall of the slot 2042 is hinged with a scraper 2043. The inner wall of the scraper 2043 is provided with a connecting cavity 2044 and the inner wall of the connecting cavity 2044 is hinged with a connecting rod 2051. The other end of the connecting rod 2051 is hinged to the outer wall of the lifting column 205. When the inner wall of the built-in cavity 2041 rises, the lifting column 205 causes the scraper 2043 to open outward through the connecting rod 2051.

[0057] The push rod 204 is installed inside the moving plate 201 and moves with the moving plate 201 below the punch frame 103. The lifting column 205 is located inside the push rod 204 and is driven by the guide block 203 to move.

[0058] The end array of the top rod 204 is provided with a plurality of scrapers 2043, the inner wall of the scraper 2043 is hinged with a connecting rod 2051 and the other end of the connecting rod 2051 is hinged to the top position of the lifting column 205. Since the bottom position of the scraper 2043 is hinged to the bottom of the slot 2042, when the lifting column 205 rises, the top of the scraper 2043 is pushed by the connecting rod 2051, and the top position of the scraper 2043 is expanded outward.

[0059] Preferably, a first joint 2045 is provided at the end of the push rod 204, and the first joint 2045 is opposite to the second joint 2052. When the lifting column 205 slides along the lifting surface 2034 provided on the outer wall of the guide block 203, the second joint 2052 moves up and engages with the first joint 2045.

[0060] Among them, the first joint 2045 is fixed below the push rod 204, opposite to the second joint 2052. When the guide block 203 is pushed obliquely upward by the push plate 2021, the lifting column 205 slides upward along the lifting surface 2034, and the second joint 2052 moves upward and engages with the first joint 2045. Then, when the guide block 203 continues to be pushed by the push plate 2021 inside the movable cavity 2011, the guide block 203 moves laterally and engages with the transmission gear 2053 through the rack 2035, so that the push rod 204 rotates in the moving plate 201, and when the rack 2035 engages with the transmission gear 2053, the push rod 204 has moved upward with the moving plate 201, and the top of the push rod 204 extends from the mold cavity 1032 on the surface of the punch frame 103.

[0061] In summary, when in use, the moving plate 201 is arranged in the cavity 1033 of the inner wall of the punch frame 103, the four walls of the moving plate 201 are in contact with the four walls of the cavity 1033, and the push rods 204 are arranged in an array inside the moving plate 201, with the ends extending into the mold cavity 1032 on the end face of the punch frame 103.

[0062] When demolding is required, the oil cylinder drives the moving plate 201 to move upward on the inner wall of the punch frame 103, and the push rod 204 is lifted upward together with the moving plate 201, and the top rises from the mold cavity 1032, initially pushing the injected structural part to be demolded from the mold cavity 1032.

[0063] Lifting plate 202 is positioned within movable chamber 2011 within moving plate 201. Driven by another hydraulic cylinder, it rises within moving plate 201. Once moving plate 201 is elevated, lifting plate 202 rises again within movable chamber 2011. The end of a push plate 2021 on the end surface of lifting plate 202 extends into and slidably engages a groove 2031 at the end of a guide block 203. Multiple guide blocks 203 are arranged in an array, each facing a mold cavity 1032 on the surface of the punch frame 103.

[0064] As the lifting plate 202 rises, the pushing plate 2021 pushes the guide block 203 to move within the active cavity 2011. The inclined sliding surface 2032 on the inner wall of the guide block 203 cooperates with the inclined surface 2022 on the outer wall of the pushing plate 2021. When the pushing plate 2021 rises, the guide block 203 first slides obliquely upward. When the inclined surface 2022 contacts the inclined sliding surface 2032, the guide block 203 moves horizontally within the active cavity 2011.

[0065] The push rod 204 is installed inside the moving plate 201 and moves with the moving plate 201 under the punch frame 103. The inner wall of the push rod 204 is provided with a built-in cavity 2041 for the movement of the lifting column 205, and the outer wall is provided with a slot 2042, and the inner wall of the slot 2042 is hinged with a scraper 2043.

[0066] A connecting rod 2051 is hingedly connected to the inner wall of the connecting cavity 2044 on the inner wall of the scraper 2043. The other end of the connecting rod 2051 is hingedly connected to the outer wall of the lifting column 205. When the lifting column 205 rises within the inner wall of the internal cavity 2041, the connecting rod 2051 pushes the scraper 2043 upward, causing its top end to expand outward. A first joint 2045 is provided at the end of the push rod 204, opposite a second joint 2052. When the guide block 203 is pushed diagonally upward by the push plate 2021, the lifting column 205 slides upward along the lifting surface 2034 on the outer wall of the guide block 203, causing the second joint 2052 to move upward and engage with the first joint 2045. Subsequently, as the guide block 203 continues to move laterally within the movable cavity 2011, the rack 2035 meshes with the transmission gear 2053, causing the push rod 204 to rotate within the movable plate 201.

[0067] Example 3

[0068] This is the third embodiment of the present application, and is implemented based on the previous embodiment.

[0069] Specifically, refer to Figures 1 to 4 The injection molding structure includes an injection hole 1011 and an injection channel 1012 opened on the end surface of the front mold frame 101 , and the injection channel 1012 is connected to the injection port 1021 opened on the inner wall of the female mold frame 102 .

[0070] The injection hole 1011 is connected to the injection channel 1012 , and injection is performed into the injection channel 1012 through the injection hole 1011 , and the injection work is completed through the injection port 1021 opposite to the mold cavity 1032 .

[0071] When the injection port 1021 is blocked, the push rod 204 moves upward along with the moving plate 201 pushed by the cylinder, and the top enters the interior of the injection port 1021. Then the lifting plate 202 is driven by another cylinder to drive the guide block 203 to move through the pushing plate 2021, so that the scraper 2043 opens outward inside the push rod 204 and fits the inner wall of the injection port 1021. As the first joint 2045 and the second joint 2052 are engaged, the push rod 204 is driven to rotate through the transmission gear 2053, thereby realizing the rotation of the scraper 2043 and cleaning the inner wall of the injection port 1021.

[0072] After the cleaning is completed, the lifting plate 202 is reset and the guide block 203 is restored synchronously. The first joint 2045 is separated from the second joint 2052 through the second elastic member 2054, prompting the front mold frame 101 to separate from the concave mold frame 102, and the inside of the injection port 1021 is adsorbed by negative pressure.

[0073] Preferably, the end surface of the rear mold frame 104 is provided with a carrier plate 1042 and the moving plate 201 is located on the end surface of the carrier plate 1042 . The end surface of the carrier plate 1042 is also provided with a fixing column 1043 and the outer wall of the fixing column 1043 is sleeved with a first elastic member 1044 .

[0074] The moving plate 201 is fixed on the surface of the carrier plate 1042 and moves up and down together with the carrier plate 1042 on the surface of the rear mold frame 104 to complete the demoulding of the injection molded part.

[0075] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present application, which should be included in the scope of the claims of the present application.

Claims

1. A high-precision continuous injection mold structure for precision structural parts, characterized in that: include: The main body assembly includes a front mold frame, a concave mold frame and a punch mold frame provided at the end of the front mold frame, and a rear mold frame provided at the end of the punch mold frame; A pushing assembly provided on the inner wall of the punch frame includes a moving plate, an inner wall of the moving plate is provided with a moving cavity and an inner wall of the moving cavity is also provided with a lifting structure; The inner wall of the front mold frame is provided with an injection molding structure and the injection molding structure is connected to the female mold frame. The injection molding of the structural part is completed by the cooperation of the female mold frame and the male mold frame. After the injection molding is completed, the jacking structure is driven to rise inside the male mold frame by the oil cylinder to lift the structural part and demould it from the male mold frame. When the injection molding port provided on the end face of the female mold frame is blocked, the jacking structure is used to clear the injection molding port. The lifting structure includes a guide block movably arranged inside the movable cavity, the guide block is affected by a lifting plate arranged inside the movable cavity, the end surface of the lifting plate is provided with a push plate, and the end of the push plate extends into a groove provided at the end of the guide block and slides with the groove, the guide block moves at the end of the push plate and pushes the ejector rod to move; The inner wall of the push rod is provided with a lifting column, the end of the lifting column extends into the limiting groove provided on the end surface of the guide block, the end of the lifting column is sleeved with a second joint, and the end of the second joint is connected to a transmission gear, the transmission gear is meshed with a rack provided on the end of the guide block, when the end of the lifting column slides along the limiting groove, the meshing of the rack and the transmission gear causes the second joint to rotate on the outer wall of the lifting column; The push rod is arranged on the inner wall of the moving plate, and the inner wall of the push rod is provided with a built-in cavity for the movement of the lifting column. The outer wall of the push rod is provided with a slot, and the inner wall of the slot is hinged with a scraper. The inner wall of the scraper is provided with a connecting cavity, and the inner wall of the connecting cavity is hinged with a connecting rod. The other end of the connecting rod is hinged to the outer wall of the lifting column. When the inner wall of the built-in cavity rises, the lifting column causes the scraper to open outward through the connecting rod. The end of the push rod is provided with a first joint, the first joint is opposite to the second joint, and when the lifting column slides along the lifting surface provided on the outer wall of the guide block, the second joint moves up and engages with the first joint; The inner wall of the guide block is further provided with an inclined sliding surface, which cooperates with the inclined surface provided on the outer wall of the push plate to push the guide block to move horizontally; The inner wall of the movable cavity is provided with an inclined groove and the outer wall of the inclined groove is connected to a transverse groove. The outer wall of the guide block is provided with a sliding column and the end of the sliding column extends into the interior of the inclined groove and slides with it. The guide block is driven by the push plate to move inside the movable cavity, and the sliding column slides in the inclined groove and enters the interior of the transverse groove.

2. The high-precision continuous injection mold structure for precision structural parts according to claim 1, characterized in that: The moving plate moves on the inner wall of the cavity opened on the inner wall of the punch frame. The internal array of the moving plate is provided with a push rod and the end of the push rod extends into the mold cavity provided on the end face of the punch frame. The push rod extends inside the mold cavity for the injection molded part to be detached.

3. The high-precision continuous injection mold structure for precision structural parts according to claim 1, characterized in that: The injection molding structure includes an injection molding hole and an injection molding channel provided on the end surface of the front mold frame. The injection molding channel is communicated with the injection molding port provided on the inner wall of the female mold frame.

4. The high-precision continuous injection mold structure for precision structural parts according to claim 3, characterized in that: The end face of the rear mold frame is provided with a carrier plate and the moving plate is located on the end face of the carrier plate. The end face of the carrier plate is also provided with a fixing column and the outer wall of the fixing column is sleeved with a first elastic member.

Images