High-precision material connecting injection mold structure for precise structural part

Abstract

The invention relates to the technical field of injection mold structures, in particular to a high-precision material connecting injection mold structure for precise structural parts, comprising: a main body assembly comprising a front mold frame, a female mold frame and a male mold frame arranged at the end of the front mold frame, and a rear mold frame arranged at the end of the male mold frame; the pushing assembly comprises a moving plate, a moving cavity is formed in the inner wall of the moving plate, and a jacking structure is further arranged on the inner wall of the moving cavity; the moving plate can be driven by the oil cylinder to move up and down on the inner wall of the male die frame, after injection molding is completed, the moving plate drives the ejector rod to jack upwards, a structural part can be smoothly demolded from the interior of the male die frame before a material belt is pulled, and the problem that the material belt is broken due to adhesion of the structural part when the material belt is pulled is effectively solved; the jacking structure can execute secondary jacking action, the ejector rod is driven by the moving plate to enter the injection molding opening, and then the lifting plate drives the guide block to move, so that the scraping plate expands outwards in the ejector rod and is attached to the inner wall of the injection molding opening.

Description

Technical Field

[0001] The present application relates to the technical field of injection mold structures, and in particular to a high-precision continuous material injection mold structure for precision structural parts. Background Art

[0002] In the field of production and manufacturing of 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 is completed, 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 causes waste of raw materials but also seriously affects the continuity of production and greatly reduces production efficiency. In addition, during the injection process, the injection port is often blocked due to plastic residue, impurity mixing, etc. 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 and requires a large amount of time and labor.

[0004] Chinese Patent with the authorization announcement number CN108973024B discloses a material tape type injection mold. The 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 a number of 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, 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 prior art: Although the mold drives the material tape to move for injection through the implanting mechanism, which reduces the damage to the material tape when entering the mold cavity, after injection is completed, 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 prior art, the present application is proposed.

[0007] To solve the above technical problems, the present application provides the following technical solution: A high-precision continuous material injection mold structure for precision structural parts, which includes a main body assembly, including a front mold frame, a female mold frame and a male mold frame provided at the end of the front mold frame, and a rear mold frame provided at the end of the male mold frame; The pushing component provided on the inner wall of the punch holder includes a moving plate. An activity cavity is formed on the inner wall of the moving plate, and a jacking structure is further arranged on the inner wall of the activity cavity. An injection molding structure is arranged on the inner wall of the front mold holder, and the injection molding structure is communicated with the female mold holder. The injection molding of the structural part is completed through the cooperation of the female mold holder and the punch holder. After the injection molding is completed, the jacking structure rises inside the punch holder driven by an oil cylinder, which is used to jack up the structural part to demold it from the punch holder. When the injection port provided on the end face of the female mold holder is blocked, the injection port is dredged through the jacking structure.

[0008] As a preferred solution of the high-precision continuous material injection molding die structure for precision structural parts of the present application, the moving plate moves inside the cavity formed on the inner wall of the punch holder. A plurality of ejector rods are arranged in an array inside the moving plate, and the end portions of the ejector rods extend into the mold cavity provided on the end face of the punch holder. The ejector rods extend inside the mold cavity for the injection molded part to be separated.

[0009] As a preferred solution of the high-precision continuous material injection molding die structure for precision structural parts of the present application, the jacking structure includes a guiding block movably arranged inside the activity cavity. The guiding block is affected by a lifting plate arranged inside the activity cavity. A pushing plate is arranged on the end face of the lifting plate, and the end portion of the pushing plate extends into the groove formed on the end portion of the guiding block and is in sliding fit with it. The guiding block moves at the end portion of the pushing plate and pushes the ejector rod to move.

[0010] As a preferred solution of the high-precision continuous material injection molding die structure for precision structural parts of the present application, an inclined sliding surface is further arranged on the inner wall of the guiding block. The inclined sliding surface cooperates with the inclined surface arranged on the outer wall of the pushing plate to push the guiding block to move horizontally.

[0011] As a preferred solution of the high-precision continuous material injection molding die structure for precision structural parts of the present application, a lifting column is arranged inside the ejector rod. The end portion of the lifting column extends into the limiting groove formed on the end face of the guiding block. A second joint is sleeved on the end portion of the lifting column, and the end portion of the second joint is connected with a transmission gear. The transmission gear meshes with the rack arranged on the end portion of the guiding block. When the end portion of the lifting column slides along the limiting groove, the second joint rotates on the outer wall of the lifting column through the meshing of the rack and the transmission gear.

[0012] As a preferred solution of the high-precision continuous material injection molding die structure for precision structural parts of the present application, an inclined groove is formed on the inner wall of the activity cavity, and a transverse groove is communicated with the outer wall of the inclined groove. A sliding column is arranged on the outer wall of the guiding block, and the end portion of the sliding column extends into the inclined groove and is in sliding fit with it. The guiding block moves inside the activity cavity driven by the pushing plate, and the sliding column slides in the inclined groove and enters the transverse groove.

[0013] 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 groove and the inner wall of the groove 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.

[0014] As a preferred solution of the high-precision continuous injection mold structure for precision structural parts described in the present 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.

[0015] As a preferred solution of the high-precision continuous injection mold structure for precision structural parts described in the present 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.

[0016] As a preferred solution of the high-precision continuous injection mold structure for precision structural parts described in the present 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 sleeved with a first elastic member.

[0017] The beneficial effects of the present application are as follows: the moving plate in the present application can be moved up and down on the inner wall of the punch frame driven by the oil cylinder. 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 material strip breakage caused by 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

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. 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 paying any creative work.

[0019] Figure 1 This is the overall structural schematic diagram of a high-precision continuous-material injection mold structure for precision structural parts in this application; Figure 2 This is the structural schematic diagram of the injection structure in this application; Figure 3 This is the exploded structural schematic diagram of the main body assembly in this application; Figure 4 This is the side sectional view of the punch holder in this application; Figure 5 This is the internal structural schematic diagram of the moving plate in this application; Figure 6 This is the structural schematic diagram of the guide block in this application; Figure 7 This is the side structural schematic diagram of the guide block in this application; Figure 8 This is the side sectional view of the ejector rod in this application; Figure 9 is Figure 8 the enlarged structural schematic diagram of part A in

[0020] Explanation of reference numerals: 100, main body assembly; 101, front mold holder; 1011, injection hole; 1012, injection channel; 102, female mold holder; 1021, injection port; 103, punch holder; 1032, mold cavity; 1033, cavity; 104, rear mold holder; 1042, carrier plate; 1043, fixed column; 1044, first elastic member; 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, ejector rod; 2041, internal cavity; 2042, slotted opening; 2043, scraping plate; 2044, connecting cavity; 2045, first joint; 205, lifting column; 2051, connecting rod; 2052, second joint; 2053, transmission gear; 2054, second elastic member. Detailed implementation manners

[0021] To make the above objects, features, and advantages of this application more obvious and understandable, the following will give a detailed description of the specific implementation manners of this application in conjunction with the accompanying drawings of the specification.

[0022] In the following description, numerous specific details are set forth to provide a thorough understanding of the present application. However, the present application may be implemented in other ways different from those described herein. Those skilled in the art can make similar generalizations without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0023] Secondly, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation manner of the present application. The appearances of "in one embodiment" in different places in this specification do not all refer to the same embodiment, nor are they separate or alternative embodiments that exclude each other from other embodiments.

[0024] Embodiment 1

[0025] This is the first embodiment of the present application, which provides a high-precision continuous-material injection mold structure for precision structural parts.

[0026] Specifically, referring to Figures 1 - 3 , the main body assembly 100 includes a front mold base 101, a female mold base 102 and a male mold base 103 provided at the end of the front mold base 101, and a rear mold base 104 provided at the end of the male mold base 103; The pushing assembly 200 provided on the inner wall of the male mold base 103 includes a moving plate 201. An activity cavity 2011 is formed on the inner wall of the moving plate 201, and a jacking structure is further provided on the inner wall of the activity cavity 2011; An injection structure is provided on the inner wall of the front mold base 101, and the injection structure is communicated with the female mold base 102. The injection of the structural part is completed through the cooperation of the female mold base 102 and the male mold base 103. After the injection is completed, the jacking structure rises inside the male mold base 103 driven by an oil cylinder, for jacking the structural part to demold it from the male mold base 103. When the injection port 1021 provided on the end face of the female mold base 102 is blocked, the injection port 1021 is dredged through the jacking structure.

[0027] When the material strip enters and is aligned with the surface of the male mold frame 103, the upper front mold frame 101 drives the female mold frame 102 to press down, cooperates with the male mold frame 103 to press tightly, and the structural parts on the material strip are injection molded through the injection molding structure. When the injection molding is completed and cooled, the front mold frame 101 pulls up and drives the female mold frame 102 to separate from the male mold frame 103. At this time, the structural parts still stay on the surface of the male mold frame 103. At this time, the structural parts are pushed by the lifting structure inside the active cavity 2011, so that the structural parts are separated from the surface of the male mold 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.

[0028] Example 2

[0029] This is the second embodiment of the present application, and this embodiment is implemented based on the previous embodiment.

[0030] Specifically, refer to Figures 4 - 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 inner 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 provided on the end face of the punch frame 103. The push rod 204 extends out from the mold cavity 1032 for the detachment of the injection molded part.

[0031] 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, and 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, which is used to push the injected structural parts to be demolded from the mold cavity 1032.

[0032] Preferably, the lifting structure includes a guide block 203 movably arranged inside the active cavity 2011, the guide block 203 is affected by a lifting plate 202 arranged inside the active cavity 2011, a pushing plate 2021 is arranged on the end face of the lifting plate 202, and the end of the pushing plate 2021 extends into a groove 2031 opened at the end of the guide block 203 and slidably cooperates therewith, the guide block 203 moves at the end of the pushing plate 2021 and pushes the jack 204 to move.

[0033] Among them, there are multiple guiding blocks 203, each of which is opposite to the mold cavity 1032 on the surface of the punch holder 103. The ejector rod 204 is driven by the guiding block 203 to push the structural part out of the mold cavity 1032.

[0034] 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 rises, it can rise again inside the movable cavity 2011 inside the moving plate 201. By the rising of the lifting plate 202, the pushing plate 2021 on its surface pushes the guiding block 203 to slide inside the movable cavity 2011.

[0035] When the guiding block 203 rises, it slides obliquely upward and then moves horizontally, and at the same time the ejector rod 204 moves synchronously with the guiding block 203.

[0036] An inclined sliding surface 2032 is also provided on the inner wall of the guiding block 203, and the inclined sliding surface 2032 cooperates with the inclined surface 2022 provided on the outer wall of the pushing plate 2021 to push the guiding block 203 to move horizontally.

[0037] Among them, the inclined surface 2022 on the outer wall of the pushing plate 2021 cooperates with the inclined sliding surface 2032 on the inner wall of the guiding block 203, as Figure 6 shown, the inclined surface 2022 is located on the right side of the pushing plate 2021, and the inclined sliding surface 2032 is located on the left side of the guiding block 203. The guiding block 203 first translates relative to the pushing plate 2021 at the top position of the pushing plate 2021 and moves in an obliquely upward direction inside the movable cavity 2011. When the inclined surface 2022 contacts the inclined sliding surface 2032, the guiding block 203 moves horizontally inside the movable cavity 2011.

[0038] A lifting column 205 is provided on the inner wall of the ejector rod 204. The end of the lifting column 205 extends into the limiting groove 2033 opened on the end face of the guiding block 203. A second joint 2052 is sleeved at the end of the lifting column 205, and a transmission gear 2053 is connected to the end of the second joint 2052. The transmission gear 2053 meshes with the rack 2035 provided at the end of the guiding block 203. When the end of the lifting column 205 slides along the limiting groove 2033, the second joint 2052 rotates on the outer wall of the lifting column 205 through the meshing of the rack 2035 and the transmission gear 2053.

[0039] Among them, the lifting column 205 moves up and down on the inner wall of the ejector rod 204. The lifting and lowering of the ejector rod 204 are affected by the lifting and lowering of the moving plate 201, while the lifting and lowering of the lifting column 205 are determined by the guiding block 203. The bottom end position of the lifting column 205 is located in the limiting groove 2033 on the surface of the guiding block 203 and is only slid inside the limiting groove 2033 under the influence of the limiting groove 2033.

[0040] The second joint 2052 is fixed to the bottom of the lifting column 205 and moves together with the lifting column 205, moving from the bottom of the guiding block 203 to above. When the transmission gear 2053 below the second joint 2052 reaches above the guiding block 203, it meshes with the rack 2035 above the guiding block 203. The movement of the guiding block 203 causes the transmission gear 2053 to rotate, thereby driving the second joint 2052 to rotate.

[0041] Refer to Figures 5 - 7 , an inclined groove 2012 is formed on the inner wall of the movable cavity 2011, and a transverse groove 2013 communicates with the outer wall of the inclined groove 2012. A sliding column 2036 is arranged on the outer wall of the guiding block 203, and the end of the sliding column 2036 extends into the inclined groove 2012 and is in sliding fit with it. The guiding block 203 is driven by the pushing plate 2021 to move inside the movable cavity 2011, and the sliding column 2036 slides in the inclined groove 2012 and enters the transverse groove 2013.

[0042] Among them, the inclined groove 2012 and the transverse groove 2013 are an integral whole, forming a complete slideway. The sliding column 2036 on the outer wall of the guiding block 203 slides inside the inclined groove 2012. When the pushing plate 2021 pushes the guiding block 203, the guiding block 203 moves upward inside the movable cavity 2011. At the same time, the guiding block 203 moves laterally relative to the pushing plate 2021 under the influence of the inclined groove 2012, and the groove 2031 slides relative to the top end of the pushing plate 2021. When the sliding column 2036 slides into the transverse groove 2013, at this time, the inclined surface 2022 is in contact with the inclined sliding surface 2032 and slides, and at this time, the guiding block 203 stops moving obliquely upward and instead undergoes a lateral displacement.

[0043] Refer to Figures 8 - 9 , the ejector rod 204 is arranged on the inner wall of the moving plate 201, and an internal cavity 2041 is formed on the inner wall of the ejector rod 204 for the lifting column 205 to move. A slot 2042 is formed on the outer wall of the ejector rod 204, and a scraping plate 2043 is hinged to the inner wall of the slot 2042. A connecting cavity 2044 is formed on the inner wall of the scraping plate 2043, and a connecting rod 2051 is hinged to the inner wall of the connecting cavity 2044. The other end of the connecting rod 2051 is hinged to the outer wall of the lifting column 205. When the lifting column 205 rises on the inner wall of the internal cavity 2041, the scraping plate 2043 is opened outward through the connecting rod 2051.

[0044] Among them, the ejector rod 204 is installed inside the moving plate 201 and moves together with the moving plate 201 below the punch holder 103. The lifting column 205 is located inside the ejector rod 204 and moves under the drive of the guiding block 203.

[0045] A plurality of scraping plates 2043 are arranged in an array at the end of the ejector rod 204. A connecting rod 2051 is hinged to the inner wall of the scraping plate 2043, and the other end of the connecting rod 2051 is hinged to the top end position of the lifting column 205. Since the bottom position of the scraping plate 2043 is hinged to the bottom of the slot 2042, when the lifting column 205 rises, the upper part of the scraping plate 2043 is pushed through the connecting rod 2051, and the top end position of the scraping plate 2043 is unfolded outwards.

[0046] Preferably, a first joint 2045 is arranged at the end of the ejector rod 204. The first joint 2045 faces 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 upwards and engages with the first joint 2045.

[0047] Among them, the first joint 2045 is fixed below the ejector rod 204 and faces the second joint 2052. When the guide block 203 is pushed obliquely upwards by the push plate 2021, at this time the lifting column 205 slides upwards along the lifting surface 2034, the second joint 2052 moves upwards and engages with the first joint 2045. After that, 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. Through the engagement of the rack 2035 and the transmission gear 2053, the ejector rod 204 rotates within the moving plate 201. And when the rack 2035 and the transmission gear 2053 are engaged, at this time the ejector rod 204 has already moved upwards with the moving plate 201, and the top end of the ejector rod 204 extends out of the mold cavity 1032 on the surface of the punch holder 103.

[0048] In summary, during use, the moving plate 201 is arranged in the cavity 1033 on the inner wall of the punch holder 103. The four walls of the moving plate 201 are in contact with the four walls of the cavity 1033. The ejector rods 204 are arranged in an array inside the moving plate 201, and the ends extend into the mold cavity 1032 on the end face of the punch holder 103.

[0049] When demolding is required, the oil cylinder drives the moving plate 201 to move upwards on the inner wall of the punch holder 103. The ejector rod 204 is lifted upwards together with the moving plate 201, and the top rises from the mold cavity 1032, initially pushing the injection-molded structural part to demold from the mold cavity 1032.

[0050] The lifting plate 202 is arranged in the movable cavity 2011 inside the moving plate 201 and can be driven by another oil cylinder to rise inside the moving plate 201. After the moving plate 201 rises, the lifting plate 202 can rise again inside the movable cavity 2011. The end of the push plate 2021 on the end face of the lifting plate 202 extends into the groove 2031 at the end of the guide block 203 and is in sliding fit with it. A plurality of guide blocks 203 are arranged in an array, and each is opposite to the mold cavity 1032 on the surface of the punch holder 103.

[0051] As the lifting plate 202 rises, the pushing plate 2021 pushes the guiding block 203 to move within the movable cavity 2011. The inclined sliding surface 2032 on the inner wall of the guiding block 203 cooperates with the inclined surface 2022 on the outer wall of the pushing plate 2021. When the pushing plate 2021 rises, the guiding block 203 first slides obliquely upward. When the inclined surface 2022 comes into contact with the inclined sliding surface 2032, the guiding block 203 moves horizontally within the movable cavity 2011.

[0052] The ejector rod 204 is installed inside the moving plate 201 and moves below the punch holder 103 along with the moving plate 201. An internal cavity 2041 is formed on the inner wall of the ejector rod 204 for the lifting column 205 to move, and a slot 2042 is formed on the outer wall. A scraper 2043 is hinged to the inner wall of the slot 2042.

[0053] A connecting rod 2051 is hinged to the inner wall of the connecting cavity 2044 on the inner wall of the scraper 2043, and the other end of the connecting rod 2051 is hinged to the outer wall of the lifting column 205. When the lifting column 205 rises along the inner wall of the internal cavity 2041, it pushes the upper part of the scraper 2043 through the connecting rod 2051, spreading the top end position of the scraper 2043 outward. A first joint 2045 is provided at the end of the ejector rod 204, opposite to the second joint 2052. When the guiding block 203 is pushed obliquely upward by the pushing plate 2021, the lifting column 205 slides upward along the lifting surface 2034 on the outer wall of the guiding block 203, and the second joint 2052 moves upward and engages with the first joint 2045. Then, when the guiding block 203 continues to be pushed laterally within the movable cavity 2011 by the pushing plate 2021, the ejector rod 204 rotates within the moving plate 201 through the engagement of the rack 2035 and the transmission gear 2053.

[0054] Embodiment 3

[0055] This is the third embodiment of the present application, which is implemented based on the previous embodiment.

[0056] Specifically, referring to Figures 1 - 4 , the injection molding structure includes an injection hole 1011 and an injection channel 1012 formed on the end face of the front mold holder 101. The injection channel 1012 is communicated with an injection port 1021 formed on the inner wall of the female mold holder 102.

[0057] Among them, the injection hole 1011 is communicated with the injection channel 1012. Injection is carried out 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.

[0058] When the injection port 1021 is blocked, the ejector rod 204 moves upward with the moving plate 201 under the push of the oil cylinder, and the top enters the inside of the injection port 1021. Then, the lifting plate 202 is driven by another oil cylinder to drive the guide block 203 through the push plate 2021, so that the scraper 2043 expands outward inside the ejector rod 204 and fits against the inner wall of the injection port 1021. With the engagement of the first joint 2045 and the second joint 2052, the ejector rod 204 is driven to rotate by the transmission gear 2053, thereby realizing the rotation of the scraper 2043 and cleaning the inner wall of the injection port 1021.

[0059] After the cleaning is completed, the lifting plate 202 resets, and the guide block 203 is restored synchronously. Through the second elastic member 2054, the first joint 2045 and the second joint 2052 are separated, prompting the separation of the front mold base 101 and the female mold base 102, and the inside of the injection port 1021 is subjected to adsorption treatment through negative pressure.

[0060] Preferably, a carrier plate 1042 is provided on the end face of the rear mold base 104, and the moving plate 201 is located on the end face of the carrier plate 1042. A fixing column 1043 is also provided on the end face of the carrier plate 1042, and a first elastic member 1044 is sleeved on the outer wall of the fixing column 1043.

[0061] Among them, the moving plate 201 is fixed on the surface of the carrier plate 1042 and moves up and down on the surface of the rear mold base 104 together with the carrier plate 1042 to complete the demolding of the injection molded part.

[0062] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not intended to limit them. Although the present application has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present application can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present application, and they should all be covered by 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 component (100) comprises a front mold frame (101), a concave mold frame (102) and a convex mold frame (103) arranged at the end of the front mold frame (101), and a rear mold frame (104) arranged at the end of the convex mold frame (103); A pushing assembly (200) disposed on the inner wall of the punch frame (103), comprising a moving plate (201), an inner wall of the moving plate (201) being provided with a moving cavity (2011), and an inner wall of the moving cavity (2011) being further provided with a lifting structure; The inner wall of the front mold frame (101) is provided with an injection molding structure, and the injection molding structure is connected to the female mold frame (102). The female mold frame (102) and the male mold frame (103) cooperate to complete the injection molding of the structural part. After the injection molding is completed, the lifting structure is driven by the oil cylinder to rise inside the male mold frame (103) to lift the structural part to demould it from the male mold frame (103). When the injection molding port (1021) provided on the end surface of the female mold frame (102) is blocked, the injection molding port (1021) is cleared by the lifting structure.

2. The high-precision continuous injection mold structure for precision structural parts according to claim 1, characterized in that: The moving plate (201) moves on the inner wall of a cavity (1033) opened on the inner wall of a punch frame (103); an array of ejector rods (204) is arranged inside the moving plate (201), and the ends of the ejector rods (204) extend into a mold cavity (1032) arranged on the end surface of the punch frame (103); the ejector rods (204) extend from the inside of the mold cavity (1032) to allow the injection molded part to be detached.

3. The high-precision continuous injection mold structure for precision structural parts according to claim 2, characterized in that: The lifting structure comprises a guide block (203) movably arranged inside the movable cavity (2011); the guide block (203) is affected by a lifting plate (202) arranged inside the movable cavity (2011); a pushing plate (2021) is arranged on the end surface of the lifting plate (202); and the end of the pushing plate (2021) extends into a groove (2031) provided at the end of the guide block (203) and slidably cooperates with the groove; the guide block (203) moves at the end of the pushing plate (2021) and pushes the ejector rod (204) to move.

4. The high-precision continuous injection mold structure for precision structural parts according to claim 3, characterized in that: The inner wall of the guide block (203) is also provided with an inclined sliding surface (2032), and the inclined sliding surface (2032) cooperates with the inclined surface (2022) provided on the outer wall of the push plate (2021) to push the guide block (203) to move horizontally.

5. The high-precision continuous injection mold structure for precision structural parts according to claim 4, characterized in that: A lifting column (205) is provided on the inner wall of the push rod (204), and the end of the lifting column (205) extends into a limiting groove (2033) provided on the end surface of the guide block (203). A second joint (2052) is sleeved on the end of the lifting column (205), and a transmission gear (2053) is connected to the end of the second joint (2052). The transmission gear (2053) is meshed with a rack (2035) provided on the end of the guide block (203). When the end of the lifting column (205) slides along the limiting groove (2033), the meshing of the rack (2035) and the transmission gear (2053) causes the second joint (2052) to rotate on the outer wall of the lifting column (205).

6. The high-precision continuous injection mold structure for precision structural parts according to claim 5, characterized in that: 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 with a 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 slidably cooperates therewith; 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).

7. The high-precision continuous injection mold structure for precision structural parts according to claim 6, characterized in that: 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 allowing the lifting column (205) to move; 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 lifting column (205) rises on the inner wall of the built-in cavity (2041), the scraper (2043) is opened outwards through the connecting rod (2051).

8. The high-precision continuous injection mold structure for precision structural parts according to claim 7, characterized in that: The end of the push rod (204) is provided with a first joint (2045), the first joint (2045) being opposite to the second joint (2052), and 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 upward and engages with the first joint (2045).

9. The high-precision continuous injection mold structure for precision structural parts according to claim 8, characterized in that: The injection molding structure comprises an injection molding hole (1011) and an injection molding channel (1012) provided on the end surface of the front mold frame (101); the injection molding channel (1012) is connected to an injection molding port (1021) provided on the inner wall of the female mold frame (102).

10. The high-precision continuous injection mold structure for precision structural parts according to claim 9, characterized in that: 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).

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