Injection mold

Abstract

The application relates to an injection mold. The injection mold comprises a first mold mechanism, an injection hole is formed in the first mold mechanism; a second mold mechanism, a cavity is formed by the first mold mechanism and the second mold mechanism, and the cavity is communicated with the injection hole; and a tooth mechanism, the tooth mechanism comprises a core-pulling mechanism and a tooth shaft, the tooth shaft is arranged on the first mold mechanism, the tooth shaft is rotatably arranged outside the core-pulling mechanism and is used for forming internal threads of a product, and the core-pulling mechanism is used for forming an internal structure of the product and can slide relative to the tooth shaft in the axial direction of the tooth shaft. In view of the fact that the tooth shaft and the core-pulling mechanism are arranged, the internal threads and the internal structure of the product can be formed by the tooth shaft and the core-pulling mechanism respectively, that is, the internal threads and the internal structure of the product are formed by the same injection mold at one time, the product is prevented from being processed by different devices, the transfer time and the processing time of the product between different devices are reduced, and therefore the production efficiency of the injection mold on the product is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of injection mold, in particular to an injection mold. BACKGROUND

[0002] The injection mold is widely used in the technical field of plastic forming. Some products have complex internal joints and external structures. The traditional injection mold is usually difficult to form the internal structure and the external structure of the product at one time. After the injection mold processes the product once, the product needs to be processed twice by other equipment to finally form the product. Therefore, the traditional injection mold usually has the defect of low production efficiency of the product. SUMMARY

[0003] One of the technical problems solved by the present application is how to improve the production efficiency of the injection mold for the product.

[0004] An injection mold, comprising:

[0005] A first mold mechanism having a glue injection hole;

[0006] A second mold mechanism surrounding the first mold mechanism to form a cavity communicating with the glue injection hole; and

[0007] A thread mechanism comprising a core-pulling mechanism and a thread shaft, the thread shaft being arranged on the first mold mechanism, the thread shaft being rotatably arranged outside the core-pulling mechanism and being used for forming internal threads of a product, the core-pulling mechanism being used for forming an internal structure of the product and being capable of sliding relative to the thread shaft along an axial direction of the thread shaft.

[0008] In one of the embodiments, the first mold mechanism comprises a cover plate, a mounting plate and a first mold plate, the mounting plate being located between the cover plate and the first mold plate and being used for mounting the thread shaft, the mounting plate being slidably connected with the cover plate and the first mold plate along the axial direction of the thread shaft, the thread shaft being rotatably connected with the first mold plate, one end of the core-pulling mechanism being fixedly connected with the cover plate.

[0009] In one of the embodiments, the first mold mechanism further comprises a first fastener, the first fastener comprising a first rod portion and a first cap portion arranged coaxially, the first rod portion being protrudingly arranged on an end face of the first cap portion, a cross-sectional dimension of the first rod portion being smaller than a cross-sectional dimension of the first cap portion; the cover plate has a first large hole and a first small hole formed therein, a hole diameter of the first large hole being larger than a hole diameter of the first small hole, a first step face being formed at a communication position of the first large hole and the first small hole; the first rod portion is arranged in the first small hole and is fixedly connected with the mounting plate; during clamping, the first cap portion is arranged in the first large hole and is spaced apart from the first step face; during unclamping, the first cap portion is capable of abutting against the first step face.

[0010] In one of the embodiments, the first mold mechanism further comprises a second fastener, the second fastener comprises a second rod portion and a second cap portion arranged coaxially, the second rod portion protrudes on an end face of the second cap portion, the cross-sectional dimension of the second rod portion is smaller than that of the second cap portion; the first mold plate is provided with a second large hole and a second small hole, the hole diameter of the second large hole is larger than that of the second small hole, and the second large hole and the second small hole have a second step face at the communication position; the second rod portion is arranged in the second small hole and fixedly connected with the mounting plate; during the mold closing, the second cap portion is arranged in the second large hole and spaced from the second step face; during the mold opening, the second cap portion can abut against the second step face.

[0011] In one of the embodiments, the first mold mechanism further comprises an elastic member, the first mold plate and / or the mounting plate is provided with a receiving hole, and the elastic member is received in the receiving hole and abuts against the first mold plate and the mounting plate.

[0012] In one of the embodiments, the first mold mechanism further comprises a slide rod, the slide rod is fixedly connected with the cover plate, and the slide rod is slidably arranged in the mounting plate, the first mold plate and the second mold mechanism.

[0013] In one of the embodiments, the tooth clamping mechanism further comprises a first gear and a second gear, both of which are rotatably arranged on the first mold mechanism, the first gear is fixedly sleeved outside the tooth shaft, and the second gear is engaged with the first gear.

[0014] In one of the embodiments, the tooth clamping mechanism further comprises a drive shaft and a drive wheel, the drive shaft is rotatably connected with the first mold mechanism, and both of the drive wheel and the second gear are spaced apart and fixedly sleeved on the drive shaft.

[0015] In one of the embodiments, the core pulling mechanism comprises a first core and a second core, the first core is sleeved outside the second core, the tooth shaft is rotatably sleeved outside the first core, one end of the second core close to the cavity is located in the first core, and the one end of the second core close to the cavity and the one end of the first core close to the cavity are spaced apart by a certain distance.

[0016] In one embodiment, the tooth shaft includes a shaft portion and a convex ring, the convex ring is arranged outside the shaft portion and abuts against the first mold mechanism, the shaft portion includes a first shaft segment, a second shaft segment and a third shaft segment, the first shaft segment and the second shaft segment are located on both sides of the convex ring, the third shaft segment is connected to the end of the second shaft segment away from the convex ring and is used to form the internal thread of the product, and the cross-sectional size of the second shaft segment gradually decreases along the direction from the first shaft segment to the second shaft segment.

[0017] A technical effect of an embodiment of the present application is: by setting a tooth shaft and a core pulling, the internal thread and internal structure of the product can be formed by the tooth shaft and the core pulling respectively, that is, the internal thread and internal structure of the product are formed at one time through the same injection mold, avoiding the product from being processed by different equipment, reducing the transfer time and processing time of the product between different equipment, thereby improving the production efficiency of the injection mold for the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of the first product.

[0019] Figure 2 This is a schematic diagram of the three-dimensional structure of the second product.

[0020] Figure 3 A schematic diagram of the three-dimensional structure of an injection mold provided in one embodiment.

[0021] Figure 4 for Figure 1 The diagram shows a schematic three-dimensional sectional structure of the injection mold in the first position.

[0022] Figure 5 for Figure 1 The second position stereoscopic cross-sectional structure diagram of the injection mold is shown.

[0023] Figure 6 for Figure 1 The third position of the injection mold is shown in a schematic three-dimensional sectional structure diagram.

[0024] Figure 7 for Figure 1 The fourth position of the injection mold is shown in a schematic three-dimensional sectional structure diagram.

[0025] Figure 8 for Figure 1 Schematic diagram of the exploded structure of the injection mold shown.

[0026] Figure 9 for Figure 1 The three-dimensional cross-sectional structure diagram of the pressing shaft in the injection mold shown.

[0027] Figure 10 for Figure 1A schematic view of a sectional structure of a core-pulling mechanism in the injection mold shown.

[0028] Figure 11 A schematic view of a sectional structure of a core-pulling mechanism in the injection mold shown. Figure 1 A schematic view of a sectional structure of a core-pulling mechanism in the injection mold shown.

[0029] Figure 12 A schematic view of a sectional structure of a core-pulling mechanism in the injection mold shown. Figure 11 A schematic view of a sectional structure of a core-pulling mechanism in the injection mold shown.

[0030] Figure 13 A schematic view of a sectional structure of a core-pulling mechanism in the injection mold shown. Figure 1 A schematic view of a sectional structure of a core-pulling mechanism in the injection mold shown.

[0031] Figure 14 A schematic view of a sectional structure of a core-pulling mechanism in the injection mold shown. Figure 13 A schematic view of a sectional structure of a core-pulling mechanism in the injection mold shown.

[0032] Figure 15 A schematic view of a sectional structure of a core-pulling mechanism in the injection mold shown. Figure 1 A schematic view of a sectional structure of a core-pulling mechanism in the injection mold shown.

[0033] Figure 16 A schematic view of a sectional structure of a core-pulling mechanism in the injection mold shown. Figure 15 A schematic view of a sectional structure of a core-pulling mechanism in the injection mold shown.

[0034] The drawings show: injection mold 10, product 20, first product 21, sleeve 201, convex column 202, second product 22, first mold mechanism 100, cover plate 110, first large hole 111, first small hole 112, first step surface 113, mounting plate 120, first mold plate 130, second large hole 131, second small hole 132, second step surface 133, accommodating hole 134, first fastener 140, first rod part 141, first cap part 142, second fastener 150, second rod part 151, second cap part 152, elastic member 160, sliding rod 170, glue injection hole 180, cavity 190, second mold mechanism 200, second mold plate 210, base plate 211, forming block 212, sliding cavity 2121, base 220, accommodating cavity 221, positioning column 230, tooth pulling mechanism 300, core-pulling mechanism 310, first core 311, second core 312, tooth shaft 320, shaft part 321, first shaft segment 3211, second shaft segment 3212, third shaft segment 3213, convex ring 322, first gear 330, second gear 340, drive shaft 350, drive wheel 360, line position mechanism 400, line position assembly 401, shovel 410, fixed part 411, first inclined surface 4111, matching part 412, sliding block 420, guide cavity 421, first cavity 4211, second cavity 4212, second inclined surface 422, pushing mechanism 500, pushing plate 510, ejector pin 520, limiting column 530, elastic body 540. DETAILED DESCRIPTION

[0035] In order to make the above objectives, features and advantages of the present application more clear and comprehensible, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a number of different ways beyond the specific embodiments described herein and by one of ordinary skill in the art without departing from the spirit and scope of the present application, and it is therefore intended that all such variations be considered as falling within the scope of the present application. Accordingly, the present application should not be limited by the following description and examples.

[0036] In the description of the present application, it should be understood that, if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0037] In addition, if the terms "first", "second" appear, these terms are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implying the number of technical features indicated. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, if the term "multiple" appears, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise explicitly specified.

[0038] In the present application, unless otherwise explicitly specified and limited, if the terms "mounting", "connecting", "connecting", "fixing" and the like appear, these terms should be interpreted broadly. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0039] In the present application, unless specifically stated and limited otherwise, if there is a description of a first feature "on" or "under" a second feature, it can mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "on", "above" and "over" the second feature can be that the first feature is directly above or obliquely above the second feature, or only means that the first feature is horizontally higher than the second feature. The first feature "under", "below" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only means that the first feature is horizontally lower than the second feature.

[0040] It should be noted that if an element is referred to as being "fixed" or "set" on another element, it can be directly on the other element or there can be an intermediate element. If an element is considered to be "connected" to another element, it can be directly connected to the other element or there can be an intermediate element. If present, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in the present application are only for illustrative purposes and do not represent the only implementation.

[0041] Referring to FIGS. Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 , an injection mold 10 provided in an embodiment of the present application is used to process a product 20, for example, two different products 20 can be processed on the same injection mold 10, and the two different products 20 are respectively referred to as a first product 21 and a second product 22. The first product 21 includes a sleeve 201 and a protruding column 202, the protruding column 202 is arranged in the sleeve 201, the sleeve 201 is arranged around the protruding column 202, and there is a gap between the sleeve 201 and the protruding column 202 along the radial direction of the sleeve 201, and the inner surface of the sleeve 201 needs to be processed with internal threads. The injection mold includes a first mold mechanism 100, a second mold mechanism 200, a tooth twisting mechanism 300, a line mechanism 400 and a pushing mechanism 500. The first mold mechanism 100 and the second mold mechanism 200 are stacked on each other, so that the first mold mechanism 100 and the second mold mechanism 200 jointly form a cavity 190.

[0042] Referring to FIGS. Figure 4 , Figure 5 , Figure 6 and Figure 7In some embodiments, the first mold mechanism 100 comprises a cover plate 110, a mounting plate 120 and a first mold plate 130. The cover plate 110, the mounting plate 120 and the first mold plate 130 are stacked with each other, the mounting plate 120 is located between the cover plate 110 and the first mold plate 130, and the mounting plate 120 is in sliding connection with the cover plate 110 and the first mold plate 130 along the stacking direction of the first mold mechanism 100 and the second mold mechanism 200, that is, the cover plate 110 can slide relative to the mounting plate 120, and the mounting plate 120 can slide relative to the first mold plate 130, and the first mold plate 130 and the second mold mechanism 200 jointly enclose the cavity 190. The cover plate 110, the mounting plate 120 and the first mold plate 130 are all provided with glue injection holes 180, the glue injection holes 180 are in communication with the cavity 190, and the molten plastic liquid can be injected into the cavity 190 through the glue injection holes 180. The plastic liquid maintains a certain pressure in the cavity 190 and is cooled and solidified, so that the plastic liquid is solidified to form the product 20.

[0043] Referring to Figure 6In some embodiments, the first mold structure 100 further comprises a first fastener 140, which can be a bolt or the like. The first fastener 140 comprises a first rod portion 141 and a first cap portion 142, which are coaxially arranged, the first rod portion 141 protrudes on an end surface of the first cap portion 142 in an axial direction, and the cross-sectional dimension of the first rod portion 141 is smaller than that of the first cap portion 142. The cover plate 110 is provided with a first large hole 111 and a first small hole 112, the first large hole 111 is farther away from the mounting plate 120 than the first small hole 112, both the first large hole 111 and the first small hole 112 are coaxially arranged, the hole diameter of the first large hole 111 is larger than that of the first small hole 112, so that the first large hole 111 and the first small hole 112 jointly form a stepped hole, the stepped hole penetrates through the entire cover plate 110 in the thickness direction, and the communication part of the first large hole 111 and the first small hole 112 has a first stepped surface 113. The first rod portion 141 is arranged in the first small hole 112, so that the first rod portion 141 extends into the mounting plate 120 and is fixedly connected with the mounting plate 120, for example, the first rod portion 141 is threadedly connected with the mounting plate 120. When the injection mold 10 is closed, the first cap portion 142 is located in the first large hole 111, and the first cap portion 142 is arranged in a spaced manner with the first stepped surface 113, that is, there is a certain spacing between the first cap portion 142 and the first stepped surface 113. When the injection mold 10 is opened, the first cap portion 142 can abut against the first stepped surface 113. In fact, during the opening process, the cover plate 110 and the mounting plate 120 slide relatively, so that the distance between the cover plate 110 and the mounting plate 120 increases, when the first cap portion 142 abuts against the first stepped surface 113, the distance between the cover plate 110 and the mounting plate 120 reaches the maximum, and the cover plate 110 and the mounting plate 120 cannot continue to slide relatively. Therefore, the spacing between the first cap portion 142 and the first stepped surface 113 can determine the maximum stroke of the relative sliding between the cover plate 110 and the mounting plate 120.

[0044] Referring to Figure 6In some embodiments, the first mold structure 100 further comprises a second fastener 150, which can be a bolt or the like. The second fastener 150 comprises a second rod portion 151 and a second cap portion 152, which are coaxially arranged, the second rod portion 151 protrudes on the end face of the second cap portion 152 in the axial direction, and the cross-sectional dimension of the second rod portion 151 is smaller than that of the second cap portion 152. The first mold plate 130 is provided with a second large hole 131 and a second small hole 132, the second large hole 131 is farther away from the mounting plate 120 than the second small hole 132, both the second large hole 131 and the second small hole 132 are coaxially arranged, the hole diameter of the second large hole 131 is larger than that of the second small hole 132, so that the second large hole 131 and the second small hole 132 jointly form a stepped hole, the stepped hole penetrates through the first mold plate 130 in the thickness direction, and the communication part of the second large hole 131 and the second small hole 132 has a second stepped surface 133. The second rod portion 151 is arranged in the second small hole 132, so that the second rod portion 151 extends into the mounting plate 120 and is fixedly connected with the mounting plate 120, for example, the second rod portion 151 is threadedly connected with the mounting plate 120. When the injection mold 10 is closed, the second cap portion 152 is located in the second large hole 131, and the second cap portion 152 is spaced apart from the second stepped surface 133, that is, there is a certain spacing between the second cap portion 152 and the second stepped surface 133. When the injection mold 10 is opened, the second cap portion 152 can abut against the second stepped surface 133. In fact, during the opening process, the first mold plate 130 and the mounting plate 120 slide relatively, so that the distance between the first mold plate 130 and the mounting plate 120 increases, when the second cap portion 152 abuts against the second stepped surface 133, the distance between the first mold plate 130 and the mounting plate 120 reaches the maximum, and the first mold plate 130 and the mounting plate 120 cannot continue to slide relatively. Therefore, the spacing between the second cap portion 152 and the second stepped surface 133 can determine the maximum stroke of the relative sliding between the first mold plate 130 and the mounting plate 120.

[0045] Referring to Figure 7In some embodiments, the first mold mechanism 100 further comprises elastic members 160, and the first mold plate 130 and / or the mounting plate 120 is provided with receiving holes 134. For example, the first mold plate 130 is provided with receiving holes 134. For another example, the mounting plate 120 is provided with receiving holes 134. For another example, the first mold plate 130 and the mounting plate 120 are both provided with receiving holes 134. The elastic members 160 can be springs, and the elastic members 160 are accommodated in the receiving holes 134, and the two ends of the elastic members 160 abut against the first mold plate 130 and the mounting plate 120. By providing the receiving holes 134, the elastic members 160 and the elastic force direction of the elastic members 160 can be effectively limited. Under the pushing action of the elastic members 160, the mounting plate 120 can slide relative to the first mold plate 130. In fact, during the mold opening process, the cover plate 110 is first stationary, and the mounting plate 120 is slid away from the cover plate 110 by the external device applying a force to the mounting plate 120. The sliding of the mounting plate 120 relative to the first mold plate 130 does not require external force, and the elastic force of the elastic members 160 can automatically push the mounting plate 120 and the first mold plate 130 to move relative to each other. After the cover plate 110 and the mounting plate 120 are pulled away from each other, the constraint of the cover plate 110 on the mounting plate 120 can be released, so that the elastic members 160 push the mounting plate 120 to slide away from the first mold plate 130.

[0046] Referring to Figure 6 In some embodiments, the first mold mechanism 100 further comprises slide rods 170, and the number of the slide rods 170 can be multiple, for example, the number of the slide rods 170 can be four, and the four slide rods 170 can be arranged near the four right angles of the cover plate 110. The slide rods 170 are fixedly connected with the cover plate 110, and the slide rods 170 are slidably arranged in the mounting plate 120, the first mold plate 130 and the second mold mechanism 200. Thus, the relative sliding accuracy between the cover plate 110 and the mounting plate 120 can be improved, the relative sliding accuracy between the first mold plate 130 and the mounting plate 120 can be improved, and the relative sliding accuracy between the second mold mechanism 200 and the first mold plate 130 can be improved.

[0047] Referring to Figure 4 , Figure 5 and Figure 8In some embodiments, the thread forming mechanism 300 comprises a core pulling mechanism 310 and a thread shaft 320, the thread shaft 320 is arranged on the first mold mechanism 100, the thread shaft 320 is rotatably sleeved outside the core pulling mechanism 310 and is used for forming the internal thread of the product 20, the core pulling mechanism 310 is used for forming the internal structure of the product 20 and can slide relative to the thread shaft 320 along the axial direction of the thread shaft 320. Specifically, one end of the core pulling mechanism 310 is fixed on the cover plate 110, so that the core pulling mechanism 310 moves synchronously with the cover plate 110, the core pulling mechanism 310 extends into the cavity 190 to form the internal structure of the product 20. The thread shaft 320 is rotatably connected with the mounting plate 120 and the first mold plate 130, so that the thread shaft 320 can rotate around the central axis of the thread shaft 320, of course, the thread shaft 320 can also slide relative to the first mold plate 130. When the cover plate 110 slides relative to the mounting plate 120, the core pulling mechanism 310 can slide relative to the thread shaft 320. It can be understood that the first product 21 has an internal thread, so the forming of the first product 21 needs the thread shaft 320; and the second product 22 does not have an internal thread, so the forming of the second product 22 does not need the thread shaft 320.

[0048] Referring to Figure 4 , Figure 5 and Figure 8 In some embodiments, the thread forming mechanism 300 further comprises a first gear 330, a second gear 340, a driving shaft 350 and a driving wheel 360. The driving shaft 350 is rotatably connected with the cover plate 110, the driving wheel 360 and the second gear 340 are both fixedly sleeved on the driving shaft 350, so that the driving wheel 360 and the second gear 340 are arranged in the axial direction of the driving shaft 350, the driving wheel 360 can be a synchronous wheel, a synchronous belt can be used to drive the driving wheel 360, so that the driving wheel 360 drives the driving shaft 350 and the second gear 340 to rotate. The first gear 330 is fixedly sleeved outside the thread shaft 320, the second gear 340 is engaged with the first gear 330, when the driving shaft 350 rotates, the second gear 340 drives the first gear 330 to rotate, and then the thread shaft 320 rotates. The thread shaft 320 is provided with an external thread, when the thread shaft 320 rotates, the thread shaft 320 can form the internal thread of the product 20. The mounting plate 120 can be provided with a sink, so that the first gear 330 and the second gear 340 are accommodated in the sink, so that the compactness of the injection mold 10 in structure can be improved. In the process of rotating the thread shaft 320 to form the internal thread of the product 20, the mounting plate 120 can be gradually away from the first mold plate 130 by the pushing action of the elastic member 160, so that the mounting plate 120 drives the thread shaft 320 to slide relative to the first mold plate 130 and gradually exits the product 20, when the internal thread of the product 20 is finished, the thread shaft 320 can completely exit the product 20.

[0049] Referring to Figure 4 andFigure 10 In some embodiments, the core-pulling element 310 comprises a first core 311 and a second core 312, the first core 311 is sleeved outside the second core 312, the dental shaft 320 is sleeved outside the first core 311, the second core 312 is located in the first core 311 near one end of the cavity 190, and the second core 312 is spaced apart from the first core 311 near one end of the cavity 190 by a distance H. By including the first core 311 and the second core 312 in the suction, the entire core-pulling element 310 can be formed in the sleeve 201 of the product 20 once, and the gap between the sleeve 201 and the protruding column 202.

[0050] Referring to Figure 4 and Figure 9 In some embodiments, the dental shaft 320 comprises a shaft portion 321 and a protruding ring 322, the protruding ring 322 is sleeved outside the shaft portion 321 and abuts against the first mold mechanism 100, obviously, the outer diameter of the protruding ring 322 is larger than that of the shaft portion 321. The shaft portion 321 comprises a first shaft segment 3211, a second shaft segment 3212 and a third shaft segment 3213, the second shaft segment 3212 is connected between the first shaft segment 3211 and the third shaft segment 3213, the first shaft segment 3211 and the second shaft segment 3212 are located on both sides of the protruding ring 322, the third shaft segment 3213 is connected with the second shaft segment 3212 away from one end of the protruding ring 322, and the third shaft segment 3213 is provided with external threads, so that the third shaft segment 3213 can form internal threads of the product 20. In the direction of the first shaft segment 3211 pointing to the second shaft segment 3212, the cross-sectional dimension of the second shaft segment 3212 gradually decreases, so that the second shaft segment 3212 has a certain taper. Therefore, by abutting the protruding ring 322 against the first mold plate 130, the dental shaft 320 can be well positioned during the clamping process, thereby improving the position and size accuracy of the internal thread forming. At the same time, by providing the second shaft segment 3212 with a certain taper, the resistance of the dental shaft 320 to exit the product 20 can be reasonably reduced during the formation of the internal thread, thereby reducing the damage of the internal thread of the product 20 caused by the dental shaft 320 during the exit process, ultimately improving the forming quality of the product 20, and also facilitating the rapid exit of the dental shaft 320 from the product 20, thereby improving the processing efficiency of the product 20.

[0051] Therefore, by providing the dental shaft 320 and the core-pulling element 310, the internal thread and the internal structure of the product 20 can be formed by the dental shaft 320 and the core-pulling element 310 respectively, i.e., the internal thread and the internal structure of the product 20 are formed by the same injection mold 10 once, avoiding the product 20 being processed by different equipment, reducing the transfer time and processing time of the product 20 between different equipment, thereby improving the production efficiency of the injection mold 10 for the product 20.

[0052] Referring to Figure 4 and Figure 5In some embodiments, the second mold mechanism 200 comprises a second mold plate 210, a base 220 and a positioning column 230. The second mold plate 210 is stacked with the first mold plate 130, and the second mold plate 210 can slide relative to the first mold plate 130, so that the entire second mold mechanism 200 can slide relative to the first mold mechanism 100. The second mold plate 210 and the first mold plate 130 are used to enclose the mold cavity 190. The base 220 is arranged on the side of the second mold plate 210 away from the first mold plate 130, so that the base 220 and the second mold plate 210 can be fixedly connected by bolt connection, so that the base 220 and the second mold plate 210 can move synchronously relative to the first mold plate 130. The base 220 and the second mold plate 210 enclose a receiving cavity 221. The positioning column 230 is located in the receiving cavity 221, one end of the positioning column 230 is fixedly connected with the base 220, and the other end of the positioning column 230 abuts against the second mold plate 210, so that the positioning column 230 supports the second mold plate 210.

[0053] Referring to Figure 11 , Figure 12 and Figure 13 In some embodiments, the row mechanism 400 comprises a plurality of row assemblies 401 arranged around the same mold cavity 190, that is, the outer barbs and hole structures of the same product 20 are formed by the plurality of row assemblies 401. The row assembly 401 comprises a shovel 410 and a sliding block 420. Taking the sliding direction of the first mold mechanism 100 and the second mold mechanism 200 as the reference direction, which can also be understood as the axial direction of the dental axis 320, the shovel 410 is fixedly connected with the first mold plate 130 of the first mold mechanism 100, so that the shovel 410 is slidingly connected with the second mold plate 210 along the reference direction, the shovel 410 and the sliding block 420 are slidingly connected along a direction that forms an acute angle with the reference direction, and the sliding block 420 is slidingly connected with the second mold plate 210 along a direction perpendicular to the reference direction, and the sliding block 420 is used to form the outer structure of the product 20; when the shovel 410 slides relative to the sliding block 420, the sliding block 420 gradually moves away from the mold cavity 190, that is, the sliding block 420 falls off the barbs and hole structures outside the product 20, thereby eliminating the interference of the sliding block 420 on the product 20, and finally enabling the product 20 to be smoothly taken out of the mold cavity 190 to achieve smooth demolding. The number of row assemblies 401 arranged around the same mold cavity 190 can be four, that is, the number of row assemblies 401 used to form the same product 20 can be four. In other embodiments, the number of row assemblies 401 used to form the same product 20 can be two or three, etc.

[0054] Referring to Figure 13 and Figure 14In some embodiments, the second mold plate 210 comprises a base plate 211 and a forming block 212, the forming block 212 is detachably connected with the base plate 211, for example, the forming block 212 can be accommodated in a counterbore of the base plate 211. The forming block 212 is provided with a sliding cavity 2121, and the sliding block 420 is in sliding fit with the sliding cavity 2121. Referring to Figure 13 and Figure 14 For example, the sliding cavity 2121 is arranged in a spaced manner with an end surface of the forming block 212, the forming block 212 and the sliding block 420 are used to enclose the forming cavity 190 to form the external structure of the product 20, at this time, the sliding cavity 2121 can be understood as a tunnel type cavity. Referring to Figure 15 and Figure 16 For another example, the sliding cavity 2121 penetrates through the forming block 212 and is arranged towards the end surface of the first mold mechanism 100, which can be understood as that the sliding cavity 2121 is formed by recessing through the forming block 212 towards the end surface of the first mold mechanism 100 to a certain depth, the sliding block 420 is used to enclose the forming cavity 190, and the forming block 212 does not directly participate in forming the external structure of the product 20, at this time, the sliding cavity 2121 can be understood as an open type cavity. Therefore, according to the specific external structure of the product 20, the forming block 212 can be selected to have a tunnel type cavity or an open type cavity, for example, the tunnel type cavity can be used to process a first product 21, and the open type cavity can be used to process a second product 22.

[0055] Referring to Figure 16 In some embodiments, the extension trajectories of any two sliding cavities 2121 are not on the same straight line. In this way, on the one hand, the sliding block 420 can smoothly and accurately move to a specified position, thereby improving the forming precision of the external structure of the product 20, on the other hand, the multiple sliding blocks 420 can reduce interference resistance during the process of exiting the sliding cavity 2121, avoid damaging the external structure of the product 20 by the sliding block 420, improve the forming quality of the product 20, and also can make the sliding block 420 quickly exit the sliding cavity 2121, thereby reducing the mold opening time and improving the production efficiency of the product 20.

[0056] Referring to Figure 13 and Figure 14 In some embodiments, the sliding block 420 is provided with a guide cavity 421, the shovel 410 is in sliding fit with the guide cavity 421, the extension direction of the guide cavity 421 is arranged at an acute angle with the reference direction, the reference direction is from the first mold mechanism 100 to the second mold mechanism 200, and the distance from the guide cavity 421 to the forming cavity 190 gradually increases. Therefore, during the process of sliding the second mold mechanism 200 relative to the first mold mechanism 100, the shovel 410 can drive the sliding block 420 to gradually exit the guide cavity 421 along a direction perpendicular to the reference direction.

[0057] Referring to Figure 13 and Figure 14The shoveling machine 410 includes a fixed part 411 and a matching part 412, the fixed part 411 has a first inclined surface 4111, and the matching part 412 is protrudingly arranged on the first inclined surface 4111; the sliding block 420 has a second inclined surface 422, the second inclined surface 422 is in close contact with the first inclined surface 4111, the guide cavity 421 includes a first cavity 4211 and a second cavity 4212, the first cavity 4211 and the second cavity 4212 are in communication with each other. The inner wall surface of the first cavity 4211 includes a side wall surface arranged in parallel to the first inclined surface 4111, the second cavity 4212 penetrates the middle part of the side wall surface and the second inclined surface 422, so that the second cavity 4212 keeps a certain distance from both ends of the side wall surface, and thus the cross section of the guide cavity 421 is roughly T-shaped. The matching part 412 cooperates with the first cavity 4211 and the second cavity 4212, so that the cross section of the matching part 412 is also roughly T-shaped. Both the first inclined surface 4111 and the second inclined surface 422 are in the same extension direction of the guide cavity 421. Due to the special structure of the guide cavity 421, when the matching part 412 cooperates with the first cavity 4211 and the second cavity 4212, the matching part 412 can only move away from the guide cavity 421 in the extension direction of the guide cavity 421, and cannot move away from the guide cavity 421 in other directions.

[0058] In the demolding process, the first mold plate 130 can be fixed, so that the entire second mold mechanism 200 gradually slides away from the first mold plate 130, at this time, due to the action of the guide cavity 421, the matching part 412 of the shoveling machine 410 will generate a component force along the vertical reference direction on the sliding block 420, which will push the sliding block 420 to gradually exit the sliding cavity 2121 to move away from the product 20. Due to the action of the first inclined surface 4111 and the second inclined surface 422, the shoveling machine 410 will provide sufficient space for the sliding block 420 during movement, so that the sliding block 420 smoothly exits the sliding cavity 2121 to separate from the product 20.

[0059] Referring to Figure 3 , Figure 4 and Figure 7 , in some embodiments, the pushing mechanism 500 includes a pushing plate 510 and a pushing pin 520, the pushing plate 510 is accommodated in the accommodation cavity 221 of the base 220, the positioning column 230 slides through the pushing plate 510, so that the pushing plate 510 can slide relative to the positioning column 230, and the positioning column 230 can guide the sliding of the pushing plate 510, so as to improve the sliding accuracy and smoothness of the pushing plate 510. The pushing pin 520 is protrudingly arranged on the pushing plate 510, and the pushing pin 520 can slide through the second mold plate 210 and extend into the cavity 190 to abut against the product 20. When the pushing plate 510 slides relative to the positioning column 230, the pushing plate 510 can move close to or away from the second mold plate 210.

[0060] Referring to Figure 3 , Figure 4And Figure 7 In some embodiments, the pushing mechanism 500 further comprises a limiting column 530 and an elastic body 540, the limiting column 530 is fixedly connected with the pushing plate 510, and the limiting column 530 slides through the second mold plate 210. The elastic body 540 is located in the accommodation cavity 221, and the elastic member 160 is sleeved on the limiting column 530, and the elastic member 160 abuts against the pushing plate 510 and the second mold plate 210. By arranging the limiting column 530, on the one hand, when the pushing plate 510 slides relative to the positioning column 230, the limiting column 530 will slide relative to the second mold plate 210, and the limiting column 530 can also guide the sliding of the pushing plate 510 to a certain extent, further improving the sliding accuracy and smoothness of the pushing plate 510. On the other hand, the limiting column 530 can constrain the deformation of the elastic body 540, ensuring that the elastic force generated by the elastic body 540 extends along the axial direction of the limiting column 530.

[0061] After the sliding block 420 of the row mechanism 400 is separated from the product 20, the pushing plate 510 can be moved close to the second mold plate 210, and the elastic body 540 stores energy, so that the pushing plate 510 drives the ejector pin 520 to eject the product 20 from the cavity 190, and finally realizes the demolding of the product 20. After the product 20 is completely demolded, the force acting on the pushing plate 510 is removed, and the elastic body 540 releases energy, so that the elastic body 540 pushes the pushing plate 510 to automatically return to the initial position, so that the elastic body 540 can play an automatic reset function for the pushing plate 510.

[0062] Since the row mechanism 400 comprises a plurality of row assemblies 401 arranged around the same cavity 190, the plurality of row assemblies 401 can process and form all the external structures of the product 20 at one time, so that the external structure of the product 20 is molded by the same injection mold 10 at one time, effectively avoiding the external structure of the product 20 being molded by multiple different devices. In this way, the transfer time and processing time of the product 20 between different devices are reduced, thereby improving the production efficiency of the injection mold 10 for the product 20.

[0063] The working principle of the injection mold 10 is introduced as follows:

[0064] In the first step, the cover plate 110 is fixed, and the mounting plate 120, the first mold plate 130 and the second mold mechanism 200 move away from the cover plate 110. When the first cap portion 142 abuts against the first step surface 113, the distance between the cover plate 110 and the mounting plate 120 is maximized, and the cover plate 110 and the mounting plate 120 stop relative sliding. The core pulling mechanism 310 is completely separated from the product 20. During the relative movement between the cover plate 110 and the mounting plate 120, the driving shaft 350 drives the toothed shaft 320 to rotate to process the internal thread of the product 20. Meanwhile, the mounting plate 120 slides relative to the first mold plate 130 under the pushing of the elastic member 160, so that the toothed shaft 320 slides relative to the first mold plate 130 during the rotation relative to the first mold plate 130. Thus, the toothed shaft 320 forms the internal thread while withdrawing from the product 20. When the second cap portion 152 abuts against the second step surface 133, the distance between the first mold plate 130 and the mounting plate 120 is maximized, and the first mold plate 130 and the mounting plate 120 stop relative sliding. The toothed shaft 320 is completely withdrawn from the product 20. Therefore, since the core pulling mechanism 310 withdraws from the product 20 earlier than the toothed shaft 320, the toothed shaft 320 and the core pulling mechanism 310 do not withdraw from the product 20 at the same time. Thus, the withdrawal resistance of the toothed shaft 320 is reduced, and the interference between the core pulling mechanism 310 and the toothed shaft 320 is reduced, thereby further reducing the demolding time of the product 20 and improving the production efficiency of the product 20.

[0065] In the second step, the first mold plate 130 is fixed, and the second mold mechanism 200 slides relative to the first mold plate 130. Thus, the shoveling mechanism 410 slides relative to the second mold plate 210 and the sliding block 420, and then the shoveling mechanism 410 drives the sliding block 420 to slide relative to the sliding cavity 2121 to move away from the product 20, i.e., the sliding block 420 gradually withdraws from the external structure such as the barb and the hole of the product 20. When the sliding block 420 is completely withdrawn from the product 20, the sliding of the second mold mechanism 200 relative to the first mold plate 130 is stopped.

[0066] In the third step, the push plate 510 is pushed to move close to the second mold plate 210. The push plate 510 drives the ejector pin 520 to separate the product 20 from the mold cavity 190, and finally realizes the complete demolding of the product 20.

[0067] The technical features of the above-described embodiments can be combined in any manner. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described, but it should be considered that any combination of the technical features is within the scope of the present disclosure as long as the combination does not cause contradiction.

[0068] The above embodiments only express several implementation ways of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation to the patent scope of the application. It should be pointed out that for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the present application, which all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. An injection mold characterized in that, The utility model relates to a first mould mechanism, set up with glue injection hole, second mould mechanism with first mould mechanism enclose with glue injection hole intercommunication cavity, and twist tooth mechanism, including core-pulling and tooth axle, tooth axle set up on first mould mechanism, tooth axle rotationally sets up outside core-pulling and is used for the internal thread of the product of shaping, and core-pulling is used for the internal structure of the product of shaping and can generate the sliding of relative tooth axle along the axial direction of tooth axle. The utility model relates to a first mould mechanism, set up with glue injection hole, second mould mechanism with first mould mechanism enclose with glue injection hole intercommunication cavity, and twist tooth mechanism, including core-pulling and tooth axle, tooth axle set up on first mould mechanism, tooth axle rotationally sets up outside core-pulling and is used for the internal thread of the product of shaping, and core-pulling is used for the internal structure of the product of shaping and can generate the sliding of relative tooth axle along the axial direction of tooth axle. The utility model relates to a first mould mechanism, set up with glue injection hole, second mould mechanism with first mould mechanism enclose with glue injection hole intercommunication cavity, and twist tooth mechanism, including core-pulling and tooth axle, tooth axle set up on first mould mechanism, tooth axle rotationally sets up outside core-pulling and is used for the internal thread of the product of shaping, and core-pulling is used for the internal structure of the product of shaping and can generate the sliding of relative tooth axle along the axial direction of tooth axle. The utility model relates to a first mould mechanism, set up with glue injection hole, second mould mechanism with first mould mechanism enclose with glue injection hole intercommunication cavity, and twist tooth mechanism, including core-pulling and tooth axle, tooth axle set up on first mould mechanism, tooth axle rotationally sets up outside core-pulling and is used for the internal thread of the product of shaping, and core-pulling is used for the internal structure of the product of shaping and can generate the sliding of relative tooth axle along the axial direction of tooth axle. The utility model relates to a first mould mechanism, set up with glue injection hole, second mould mechanism with first mould mechanism enclose with glue injection hole intercommunication cavity, and twist tooth mechanism, including core-pulling and tooth axle, tooth axle set up on first mould mechanism, tooth axle rotationally sets up outside core-pulling and is used for the internal thread of the product of shaping, and core-pulling is used for the internal structure of the product of shaping and can generate the sliding of relative tooth axle along the axial direction of tooth axle. The utility model relates to a first mould mechanism, set up with glue injection hole, second mould mechanism with first mould mechanism enclose with glue injection hole intercommunication cavity, and twist tooth mechanism, including core-pulling and tooth axle, tooth axle set up on first mould mechanism, tooth axle rotationally sets up outside core-pulling and is used for the internal thread of the product of shaping, and core-pulling is used for the internal structure of the product of shaping and can generate the sliding of relative tooth axle along the axial direction of tooth axle. The utility model relates to a first mould mechanism, set up with glue injection hole, second mould mechanism with first mould mechanism enclose with glue injection hole intercommunication cavity, and twist tooth mechanism, including core-pulling and tooth axle, tooth axle set up on first mould mechanism, tooth axle rotationally sets up outside core-pulling and is used for the internal thread of the product of shaping, and core-pulling is used for the internal structure of the product of shaping and can generate the sliding of relative tooth axle along the axial direction of tooth axle. The utility model relates to a first mould mechanism, set up with glue injection hole, second mould mechanism with first mould mechanism enclose with glue injection hole intercommunication cavity, and twist tooth mechanism, including core-pulling and tooth axle, tooth axle set up on first mould mechanism, tooth axle rotationally sets up outside core-pulling and is used for the internal thread of the product of shaping, and core-pulling is used for the internal structure of the product of shaping and can generate the sliding of relative tooth axle along the axial direction of tooth axle. The utility model relates to a first mould mechanism, set up with glue injection hole, second mould mechanism with first mould mechanism enclose with glue injection hole intercommunication cavity, and twist tooth mechanism, including core-pulling and tooth axle, tooth axle set up on first mould mechanism, tooth axle rotationally sets up outside core-pulling and is used for the internal thread of the product of shaping, and core-pulling is used for the internal structure of the product of shaping and can generate the sliding of relative tooth axle along the axial direction of tooth axle.

2. The injection mold of claim 1, wherein The utility model relates to a first mould mechanism, set up with glue injection hole, second mould mechanism with first mould mechanism enclose with glue injection hole intercommunication cavity, and twist tooth mechanism, including core-pulling and tooth axle, tooth axle set up on first mould mechanism, tooth axle rotationally sets up outside core-pulling and is used for the internal thread of the product of shaping, and core-pulling is used for the internal structure of the product of shaping and can generate the sliding of relative tooth axle along the axial direction of tooth axle. The utility model relates to a first mould mechanism, set up with glue injection hole, second mould mechanism with first mould mechanism enclose with glue injection hole intercommunication cavity, and twist tooth mechanism, including core-pulling and tooth axle, tooth axle set up on first mould mechanism, tooth axle rotationally sets up outside core-pulling and is used for the internal thread of the product of shaping, and core-pulling is used for the internal structure of the product of shaping and can generate the sliding of relative tooth axle along the axial direction of tooth axle. The utility model relates to a first mould mechanism, set up with glue injection hole, second mould mechanism with first mould mechanism enclose with glue injection hole intercommunication cavity, and twist tooth mechanism, including core-pulling and tooth axle, tooth axle set up on first mould mechanism, tooth axle rotationally sets up outside core-pulling and is used for the internal thread of the product of shaping, and core-pulling is used for the internal structure of the product of shaping and can generate the sliding of relative tooth axle along the axial direction of tooth axle. The utility model relates to a first mould mechanism, set up with glue injection hole, second mould mechanism with first mould mechanism enclose with glue injection hole intercommunication cavity, and twist tooth mechanism, including core-pulling and tooth axle, tooth axle set up on first mould mechanism, tooth axle rotationally sets up outside core-pulling and is used for the internal thread of the product of shaping, and core-pulling is used for the internal structure of the product of shaping and can generate the sliding of relative tooth axle along the axial direction of tooth axle. The utility model relates to a first mould mechanism, set up with glue injection hole, second mould mechanism with first mould mechanism enclose with glue injection hole intercommunication cavity, and twist tooth mechanism, including core-pulling and tooth axle, tooth axle set up on first mould mechanism, tooth axle rotationally sets up outside core-pulling and is used for the internal thread of the product of shaping, and core-pulling is used for the internal structure of the product of shaping and can generate the sliding of relative tooth axle along the axial direction of tooth axle. The utility model relates to a first mould mechanism, set up with glue injection hole, second mould mechanism with first mould mechanism enclose with glue injection hole intercommunication cavity, and twist tooth mechanism, including core-pulling and tooth axle, tooth axle set up on first mould mechanism, tooth axle rotationally sets up outside core-pulling and is used for the internal thread of the product of shaping, and core-pulling is used for the internal structure of the product of shaping and can generate the sliding of relative tooth axle along the axial direction of tooth axle. The utility model relates to a first mould mechanism, set up with glue injection hole, second mould mechanism with first mould mechanism enclose with glue injection hole intercommunication cavity, and twist tooth mechanism, including core-pulling and tooth axle, tooth axle set up on first mould mechanism, tooth axle rotationally sets up outside core-pulling and is used for the internal thread of the product of shaping, and core-pulling is used for the internal structure of the product of shaping and can generate the sliding of relative tooth axle along the axial direction of tooth axle. The utility model relates to a first mould mechanism, set up with glue injection hole, second mould mechanism with first mould mechanism enclose with glue injection hole intercommunication cavity, and twist tooth mechanism, including core-pulling and tooth axle, tooth axle set up on first mould mechanism, tooth axle rotationally sets up outside core-pulling and is used for the internal thread of the product of shaping, and core-pulling is used for the internal structure of the product of shaping and can generate the sliding of relative tooth axle along the axial direction of tooth axle. The utility model relates to a first mould mechanism, set up with glue injection hole, second mould mechanism with first mould mechanism enclose with glue injection hole intercommunication cavity, and twist tooth mechanism, including core-pulling and tooth axle, tooth axle set up on first mould mechanism, tooth axle rotationally sets up outside core-pulling and is used for the internal thread of the product of shaping, and core-pulling is used for the internal structure of the product of shaping and can generate the sliding of relative tooth axle along the axial direction of tooth axle. The utility model relates to a first mould mechanism, set up with glue injection hole, second mould mechanism with first mould mechanism enclose with glue injection hole intercommunication cavity, and twist tooth mechanism, including core-pulling and tooth axle, tooth axle set 3. The injection mold of claim 1, wherein The first mold mechanism further comprises a second fastener, the second fastener comprises a second rod portion and a second cap portion arranged coaxially, the second rod portion is protrudingly arranged on an end surface of the second cap portion, the cross-sectional dimension of the second rod portion is smaller than that of the second cap portion; the first mold plate is provided with a second large hole and a second small hole, the hole diameter of the second large hole is larger than that of the second small hole, and the second large hole and the second small hole are communicated and have a second step surface; the second rod portion is arranged in the second small hole and fixedly connected with the mounting plate; during clamping, the second cap portion is arranged in the second large hole and spaced from the second step surface; during unclamping, the second cap portion can abut against the second step surface.

4. The injection mold of claim 3, wherein The second fastener is a bolt.

5. The injection mold of claim 1, wherein The first mold mechanism further comprises an elastic member, the first mold plate and / or the mounting plate is provided with a receiving hole, the elastic member is accommodated in the receiving hole and abuts against the first mold plate and the mounting plate.

6. The injection mold of claim 5, wherein, The elastic member is a spring.

7. The injection mold of claim 1, wherein The first mold mechanism further comprises a slide rod, the slide rod is fixedly connected with the cover plate, and the slide rod is slidably arranged in the mounting plate, the first mold plate and the second mold mechanism.

8. The injection mold of claim 7, wherein, The number of the slide rods is four, and the four slide rods are arranged near the four right angles of the cover plate respectively.

9. The injection mold of claim 1, wherein, The tooth twisting mechanism further comprises a first gear and a second gear, both of which are rotatably arranged on the first mold mechanism, the first gear is fixedly sleeved outside the tooth shaft, and the second gear is engaged with the first gear.

10. The injection mold of claim 9, wherein, The tooth twisting mechanism further comprises a drive shaft and a drive wheel, the drive shaft is rotatably connected with the first mold mechanism, and both of the drive wheel and the second gear are spaced apart and fixedly sleeved on the drive shaft.

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