Mold structure

Abstract

This utility model discloses a mold structure, belonging to the field of injection molding technology. The mold structure includes: a mold base plate, a fixed base plate, a mold opening and closing mechanism, a molding component, and a drive component. The molding component includes a core and a threaded sleeve. The drive component is used to drive the threaded sleeve to rotate around the axis of the core and move along the axis of the core via a chain drive component. The chain drive component also drives the threaded sleeve to retract from the core. Because the chain drive component has good long-stroke adaptability and high installation flexibility, it can reduce the space occupied by the drive component and improve the applicability of the mold component. The mold opening and closing mechanism is used to separate or close the mold base plate and the fixed base plate. During the mold opening process, the mold opening and closing mechanism can simultaneously drive the core to retract when separating the mold base plate and the fixed base plate, eliminating the need for a separate drive mechanism for core retraction and simplifying the mold structure.

Description

Technical Field

[0001] This utility model relates to the field of injection molding technology, and in particular to a mold structure. Background Technology

[0002] With the development of injection molding technology, the requirements for the processing quality of injection molded products are becoming increasingly stringent. Currently, in order to improve the demolding quality of mold structures, vertical reamer thread unmolding mold structures are commonly used for molding internal threads or helical structures. Vertical reamer thread unmolding mold structures can use rotational motion to unscrew the threaded core from the molded product, achieving demolding of complex thread structures.

[0003] Vertical reamer unscrewing molds typically include a rack unscrewing mechanism and a slider core-pulling mechanism to achieve unscrewing and core-pulling actions respectively. The rack unscrewing mechanism usually includes a hydraulic cylinder and a rack. Since the rack and hydraulic cylinder occupy a large space, the overall structure of the mold is complex and the volume is large. Utility Model Content

[0004] This utility model embodiment provides a mold structure, the technical solution of which is as follows:

[0005] The mold structure includes: a mold frame support plate, a fixed base plate, a mold opening and closing mechanism, a molding component, and a drive component;

[0006] The mold frame support plate and the fixed base plate are stacked and arranged;

[0007] The mold opening and closing mechanism is connected to the mold frame support plate and the fixed base plate respectively, and is used to drive the mold frame support plate and the fixed base plate to separate or close.

[0008] The molding component is assembled in the mold frame support plate. The molding component includes a core and a threaded sleeve. One end of the core is movably connected to the fixed base plate, and the other end extends out of the mold frame support plate. The threaded sleeve is sleeved on the outside of the core.

[0009] The drive assembly is mounted on the mold frame support plate. The drive assembly includes a power assembly and a chain drive assembly. The power assembly is connected to one end of the threaded sleeve through the chain drive assembly.

[0010] The drive assembly is used to drive the threaded sleeve to rotate around the axis of the core and move along the axis of the core through the chain drive assembly; when the mold frame support plate and the fixed base plate are separated, the core can be driven to switch from the core-in state to the core-out state; when the mold frame support plate and the fixed base plate are closed, the core can be driven to switch from the core-out state to the core-in state.

[0011] Optionally, the power assembly includes a drive motor, and the chain drive assembly includes a driving sprocket, a chain, a driven sprocket, a first gear, and a second gear.

[0012] The driving sprocket is mounted on the drive motor, and the driving sprocket is connected to the driven sprocket via the chain.

[0013] The driven sprocket is coaxially connected to the first gear, and the first gear is meshed with the second gear.

[0014] The second gear is fixedly connected to the threaded tooth sleeve.

[0015] Optionally, the drive assembly further includes a third gear;

[0016] The third gear is located between the first gear and the second gear, and is meshed with both the first gear and the second gear.

[0017] The axial length of the third gear is greater than the axial length of the second gear.

[0018] Optionally, the molding assembly further includes a linkage slider, and the mold structure further includes a reset assembly;

[0019] The linkage slider is located on the side of the second gear near the fixed base plate. The linkage slider is movably installed in the mold frame support plate and is in contact with the second gear.

[0020] The reset component is mounted on the fixed base plate and can switch between a first position and a second position. When the reset component is in the first position, it is located on the side of the linkage slider away from the second gear and is in contact with the second gear. When the reset component is in the second position, it is offset from the linkage slider.

[0021] Optionally, the linkage slider includes a first slider and a second slider arranged in a direction away from the second gear;

[0022] The two ends of the first slider are in contact with the second gear and the second slider, respectively;

[0023] The end of the second slider that is away from the first slider can contact the reset component.

[0024] Optionally, the reset assembly includes a hydraulic cylinder and a pressure-bearing slider;

[0025] The pressure-bearing slider is mounted on the hydraulic cylinder, and the hydraulic cylinder is used to drive the pressure-bearing slider to move between the first position and the second position.

[0026] Optionally, the extending direction of the core forms an angle with the opening and closing direction, wherein the opening and closing direction is the relative moving direction of the mold frame support plate and the fixed base plate;

[0027] The molding assembly also includes an inclined slider, which is assembled in the mold base plate. The core is fixedly connected to the inclined slider. The side of the inclined slider near the fixed base plate protrudes from the mold base plate and has a strip-shaped limiting groove.

[0028] The mold structure also includes a limiting block, which is fixedly connected to the fixed base plate. The limiting block has a snap-fit ​​part, which is assembled in the strip-shaped limiting groove, and the shape of the snap-fit ​​part matches the shape of the strip-shaped limiting groove.

[0029] Optionally, the strip-shaped limiting groove includes a T-shaped groove, and the limiting block includes a T-shaped block.

[0030] Optionally, the mold opening and closing mechanism includes a fixed-distance tie rod, one end of which is movably connected to the fixed base plate, and the other end of which is fixedly connected to the mold frame support plate. The fixed-distance tie rod is used to limit the opening and closing stroke of the mold frame support plate and the fixed base plate.

[0031] Optionally, the mold structure further includes a male mold plate and a female mold plate, and the mold opening and closing mechanism further includes a machine base and a fixed-distance pull plate;

[0032] The male template is located on the side of the mold frame support plate away from the fixed base plate, and is fixedly connected to the mold frame support plate;

[0033] The female template is located on the side of the male template away from the mold frame support plate, and the female template is movably connected to the male template through the fixed-distance tie plate;

[0034] The machine is used to drive the male template and the female template to separate or close.

[0035] The beneficial effects of the technical solution provided by this utility model embodiment include at least the following:

[0036] This utility model provides a mold structure including a mold base plate, a fixed base plate, a mold opening and closing mechanism, a forming component, and a driving component. The forming component includes a core and a threaded sleeve. The driving component drives the threaded sleeve to rotate around the axis of the core and move along the axis of the core via a chain drive component. The chain drive component also drives the threaded sleeve to retract from the core. Because the chain drive component has good long-stroke adaptability and high installation flexibility, it can reduce the space occupied by the transmission component and improve the applicability of the mold component. The mold opening and closing mechanism drives the mold base plate and the fixed base plate to separate or close. During the mold opening process, the mold opening and closing mechanism can simultaneously drive the core to retract when separating the mold base plate and the fixed base plate, eliminating the need for a separate driving mechanism for core retraction, thus simplifying the mold structure. This achieves the effect of reducing the volume of the mold structure and simplifying its structure. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 This is a schematic diagram of a mold structure provided in an embodiment of the present utility model;

[0039] Figure 2 This is an exploded structural diagram of a mold structure provided in an embodiment of the present invention;

[0040] Figure 3 yes Figure 2 A partial structural diagram of the mold structure is shown;

[0041] Figure 4 yes Figure 3 A schematic diagram of an exploded structure of the local structure shown;

[0042] Figure 5 This is a schematic cross-sectional view of a mold structure in the closed state provided by an embodiment of the present invention;

[0043] Figure 6 This is a schematic cross-sectional view of a mold structure in the open state provided by an embodiment of the present invention;

[0044] Figure 7 yes Figure 3 A schematic diagram of a cross-sectional structure of the local structure shown;

[0045] Figure 8 This is a schematic diagram of the state of a threaded sleeve before unthreading, provided by an embodiment of this utility model;

[0046] Figure 9 This is a schematic diagram of the state of a threaded sleeve after unthreading, provided by an embodiment of this utility model;

[0047] Figure 10 This is a schematic diagram of the structure of a reset component provided in an embodiment of the present invention;

[0048] Figure 11 This is a schematic diagram of the connection structure of an inclined pulley provided in an embodiment of the present utility model;

[0049] Figure 12 yes Figure 11 An exploded structural diagram of the connection structure of the inclined pulley shown;

[0050] Figure 13 This is a schematic cross-sectional view of a mold structure in the product ejection state according to an embodiment of the present invention.

[0051] Explanation of reference numerals in the attached figures:

[0052] Mold frame support plate 11, fixed base plate 12; mold opening and closing mechanism 13, positioning rod 131, positioning pull plate 132; forming component 14, core 141, threaded sleeve 142; slider seat 143, linkage slider 144, first slider 1441, second slider 1442; inclined slider 145, strip-shaped limiting groove c1; drive component 15, power component 151, chain drive component 152, drive sprocket 1521, chain 1522, driven sprocket 1523, first gear 1524, second gear 1525, third gear 1526; reset component 16, oil cylinder 161, pressure-bearing slider 162; limiting block 17, snap-fit ​​part 171, male template 18; female template 19; ejector plate 20; auxiliary ejector roller 21. Detailed Implementation

[0053] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0054] Although the present invention can be readily embodied in various forms, only some specific embodiments are shown in the accompanying drawings and will be described in detail in this specification. It is understood that this specification should be regarded as an exemplary illustration of the principles of the present invention and is not intended to limit the present invention to what is described herein.

[0055] Therefore, a feature pointed out in this specification is used to describe one feature of one embodiment of the present invention, and does not imply that every embodiment of the present invention must have the described feature. Furthermore, it should be noted that this specification describes many features. While certain features may be combined to illustrate possible system designs, these features may also be used in other combinations not explicitly stated. Therefore, unless otherwise stated, the described combinations are not intended to be limiting.

[0056] In the embodiments shown in the accompanying drawings, the directional indications (such as up, down, left, right, front, and back) used to explain the structure and movement of the various elements of this invention are relative rather than absolute. These descriptions are appropriate when these elements are in the positions shown in the drawings. If the descriptions of the positions of these elements change, these directional indications also change accordingly.

[0057] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 , Figure 1 This is a schematic diagram of a mold structure provided in an embodiment of the present invention. Figure 2 This is an exploded structural diagram of a mold structure provided in an embodiment of the present invention. Figure 3 yes Figure 2 The diagram shows a partial structural representation of the mold. Figure 4 yes Figure 3 The exploded view of a partial structure shown indicates that the mold structure may include: a mold frame support plate 11, a fixed base plate 12, a mold opening and closing mechanism 13, a molding component 14, and a drive component 15.

[0058] The mold base plate 11 can be stacked with the fixed base plate 12. During the mold opening and closing process, the fixed base plate 12 can be kept in a fixed position, and the mold base plate 11 can be located above the fixed base plate 12.

[0059] The mold opening and closing mechanism 13 can be connected to the mold frame support plate 11 and the fixed base plate 12 respectively, and is used to drive the mold frame support plate 11 and the fixed base plate 12 to separate or close. The mold opening and closing mechanism 13 is used to realize the opening and closing of the mold structure. The mold frame support plate 11 and the fixed base plate 12 can be movably connected. When the mold opening and closing machine performs the mold opening action, the mold frame support plate 11 can move away from the fixed base plate 12 so that the mold frame support plate 11 and the fixed base plate 12 are separated. When the mold opening and closing machine performs the mold closing action, the mold frame support plate 11 can move towards the fixed base plate 12 so that the mold frame support plate 11 and the fixed base plate 12 are closed.

[0060] The molding component 14 can be assembled in the mold base plate 11. The molding component 14 includes a core 141 and a threaded sleeve 142. One end of the core 141 is movably connected to the fixed base plate 12, and the other end extends out of the mold base plate 11. The other end of the core 141 extending out of the mold base plate 11 is used to participate in the molding of the plastic part. The threaded sleeve 142 is sleeved on the outside of the core 141. The end of the threaded sleeve 142 extending out of the mold base plate 11 is also used to participate in the molding of the plastic part.

[0061] The drive assembly 15 can be mounted on the mold base plate 11. The drive assembly 15 may include a power assembly 151 and a chain drive assembly 152. The power assembly 151 is connected to one end of the threaded sleeve 142 through the chain drive assembly 152.

[0062] The drive assembly 15 is used to drive the threaded sleeve 142 to rotate around the axis of the core 141 and move along the axis of the core 141 via the chain drive assembly 152. Thus, when it is necessary to rotate the threaded sleeve 142 to unscrew it, the drive assembly 15 can be activated, and the drive assembly 15 drives the threaded sleeve 142 to rotate via the chain drive assembly 152 to achieve rotational unscrewing. Compared to rack and pinion drives in related technologies, in this embodiment of the invention, the threaded sleeve 142 is moved via the chain drive assembly 152. Because the chain drive assembly 152 has better adaptability to long strokes and higher installation flexibility, it can reduce the space occupied by the transmission assembly.

[0063] Please refer to Figure 5 and Figure 6 , Figure 5 This is a schematic cross-sectional view of a mold structure in the closed state according to an embodiment of the present invention. Figure 6This is a cross-sectional schematic diagram of a mold structure in an open state according to an embodiment of the present invention. When the mold base plate 11 and the fixed base plate 12 separate, the core 141 can be driven to switch from the core-entry state to the core-retraction state. When the mold base plate 11 and the fixed base plate 12 close, the core 141 can be driven to switch from the core-retraction state to the core-entry state. For example, when the fixed base plate 12 moves away from the fixed base plate 12 under the action of the mold opening and closing mechanism 13, since the core 141 is movably connected to the fixed base plate 12, the core 141 slides relative to the mold base plate 11 under the connection action of the fixed base plate 12, thereby realizing the core-retraction. Similarly, when the fixed base plate 12 moves towards the fixed base plate 12 under the action of the mold opening and closing mechanism 13, the core 141 slides relative to the mold base plate 11 under the abutment action of the fixed base plate 12, thereby realizing the core-entry. It is understood that the core 141's "entering state" refers to the state during the mold closing and forming stage, where the core 141 advances to the first predetermined position in the mold cavity and cooperates with the mold core to form a complete forming space; the "retracting state" refers to the state during the mold opening and demolding stage, where the core 141 withdraws along a straight line to the second predetermined position. Thus, in this embodiment of the present invention, the mold opening and closing mechanism 13 can simultaneously drive the core 141 to retract during the mold opening process through the separation of the mold frame support plate 11 and the fixed base plate 12, eliminating the need for a separate drive mechanism for the core 141's retraction and simplifying the mold structure.

[0064] In summary, this utility model embodiment provides a mold structure including a mold frame support plate 11, a fixed base plate 12, a mold opening and closing mechanism 13, a molding component 14, and a drive component 15. The molding component 14 includes a core 141 and a threaded sleeve 142. The drive component 15 is used to drive the threaded sleeve 142 to rotate around the axis of the core 141 and move along the axis of the core 141 via the chain drive component 152. The chain drive component 152 drives the threaded sleeve 142 to retract from the core. Since the chain drive component 152 has good long stroke adaptability and high installation flexibility, it can reduce the space occupied by the transmission component and improve the applicability of the mold component. The mold opening and closing mechanism 13 is used to drive the mold frame support plate 11 and the fixed base plate 12 to separate or close. During the mold opening process, the mold opening and closing mechanism 13 can simultaneously drive the core 141 to retract when separating the mold frame support plate 11 and the fixed base plate 12. There is no need to set a separate drive mechanism for the core 141 to retract, which can simplify the mold structure. It can achieve the effect of reducing the volume of the mold structure and simplifying the structure.

[0065] Please refer to Figure 3 and Figure 4In one optional embodiment, the power assembly 151 may include a drive motor, and the chain drive assembly 152 may include a drive sprocket 1521, a chain 1522, a driven sprocket 1523, a first gear 1524, and a second gear 1525. The drive sprocket 1521 is mounted on the drive motor and is connected to the driven sprocket 1523 via the chain 1522. The driven sprocket 1523 is coaxially connected to the first gear 1524, and the first gear 1524 is meshed with the second gear 1525. The second gear 1525 is fixedly connected to the threaded sleeve 142.

[0066] In an optional embodiment, the drive assembly 15 may further include a third gear 1526; the third gear 1526 is located between the first gear 1524 and the second gear 1525, and is meshed with the first gear 1524 and the second gear 1525 respectively; the axial length of the third gear 1526 is greater than the axial length of the second gear 1525.

[0067] Please continue to refer to this. Figure 3 , Figure 6 and Figure 7 , Figure 7 yes Figure 3 The diagram shows a cross-sectional view of a partial structure. The molding assembly 14 may further include a slider seat 143, which is mounted in the mold base plate 11. The slider seat 143 has a mounting groove facing the fixed base plate 12. A driven sprocket 1523 is mounted in the mounting groove of the slider seat 143. A first gear 1524 and a third gear 1526 can be mounted inside the slider seat 143. For example, the slider seat 143 may include two first sub-sliders that can be assembled into the slider seat 143 to facilitate the mounting of the first gear 1524 and the second gear 1525 within it.

[0068] In one exemplary embodiment, the drive motor may include a hydraulic motor, and the drive assembly 15 further includes a drive shaft, through which the driven sprocket 1523 and the first gear 1524 are connected. The hydraulic motor can drive the drive sprocket 1521 to rotate, and the drive sprocket 1521 drives the driven sprocket 1523 to rotate via a chain 1522. The driven sprocket 1523 and the first gear 1524 are coaxially driven through the drive shaft. The first gear 1524, the third gear 1526, and the second gear 1525 mesh and drive in sequence. The second gear 1525 is mounted on the threaded sleeve 142 to drive the threaded sleeve 142 to rotate and displace axially along the threaded sleeve 142.

[0069] The third gear 1526 has a longer axial length, which can prevent the second gear 1525 from disengaging from the third gear 1526 when sliding together with the threaded sleeve 142, thereby improving the stability of the meshing connection between multiple gears.

[0070] Please refer to Figure 7 , Figure 8 and Figure 9 , Figure 8 This is a schematic diagram showing the state of a threaded sleeve 142 before unthreading, according to an embodiment of this utility model. Figure 9 This is a schematic diagram of the state of a threaded sleeve 142 after unthreading, according to an embodiment of this utility model. Figure 3 The diagram shown is a schematic of a threaded sleeve in a forming state. In an optional embodiment, the forming component 14 may further include a linkage slider 144, and the mold structure may further include a reset component 16.

[0071] The linkage slider 144 is located on the side of the second gear 1525 near the fixed base plate 12. The linkage slider 144 is movably mounted in the mold frame support plate 11 and contacts the second gear 1525. The reset assembly 16 is mounted on the fixed base plate 12 and can switch between a first position and a second position. When the reset assembly 16 is in the first position, it is located on the side of the linkage slider 144 away from the second gear 1525 and contacts the second gear 1525. When the reset assembly 16 is in the second position, it is offset from the linkage slider 144. When the mold structure is in the mold closing and forming stage, the reset assembly 16 can be located in the first position, that is, below the linkage slider 144. At this time, the reset assembly 16 can abut against the linkage slider 144 to provide upward support force to the linkage slider 144, the second gear 1525, and the threaded sleeve 142. Before removing the threaded sleeve 142, the reset assembly 16 can be moved to the second position, that is, moved away from below the linkage slider 144, to avoid obstructing the downward movement of the linkage slider 144, the second gear 1525, and the threaded sleeve 142. Afterwards, the mold base plate 11 separates from the fixed base plate 12, realizing the core-pulling action of the core 141 while the mold is opening. Before closing the mold again, the reset assembly 16 can be moved to the first position. Thus, during the closing process of the fixed base plate 12 and the mold base plate 11, the reset assembly 16 can push upwards the linkage slider 144, the second gear 1525, and the threaded sleeve 142, thereby causing the threaded sleeve 142 to return to its original position.

[0072] Please refer to Figure 7 In one optional embodiment, the linkage slider 144 includes a first slider 1441 and a second slider 1442 arranged in a direction away from the second gear 1525; the two ends of the first slider 1441 are in contact with the second gear 1525 and the second slider 1442 respectively; the end of the second slider 1442 away from the first slider 1441 can contact the reset component 16.

[0073] The molding assembly 14 may further include an inclined slider 145, which is mounted in the mold base plate 11. The end of the threaded sleeve 142, the second gear 1525, and the linkage slider 144 can all be mounted in the inclined slider 145, and the linkage slider 144 can protrude from the side of the inclined slider 145 toward the fixed base plate 12. For example, the inclined slider 145 may include three second sub-sliders, which can be assembled into the inclined slider 145 to house the end of the threaded sleeve 142, the second gear 1525, and the linkage slider 144 within it.

[0074] For example, one end of the threaded sleeve 142 located inside the inclined slider 145 has a clearance gap with the inclined slider 145 so that the threaded sleeve 142 can slide up and down along its axial direction.

[0075] In this embodiment of the utility model, by setting the linkage slider 144 as an independent first slider 1441 and second slider 1442, the following two aspects can be achieved: on the one hand, the two independent sliders (such as the first slider 1441 and the second slider 1442) can reduce the assembly difficulty of the linkage slider 144; on the other hand, since the first slider 1441 is in contact with the rotatable second gear 1525, the first slider 1441 is more prone to wear. Therefore, by setting two independent sliders, only the first slider 1441 with more severe wear needs to be replaced, without replacing the second slider 1442, thereby saving resources.

[0076] Understandably, the first slider 1441 has a first limiting step at the end near the second slider 1442, and the inclined slider 145 has a second limiting step inside that matches the first limiting step, to limit the upward travel of the linkage slider 144. The second slider 1442 has a third limiting step at the end near the first slider 1441, and the inclined slider 145 has a fourth limiting step inside that matches the third limiting step, to limit the downward travel of the linkage slider 144 and prevent the linkage slider 144 from falling out of the inclined slider 145.

[0077] Please continue to refer to this. Figure 10 , Figure 10 This is a schematic diagram of the structure of a reset assembly 16 provided in an embodiment of the present invention. In an optional embodiment, the reset assembly 16 may include a hydraulic cylinder 161 and a pressure-bearing slider 162; the pressure-bearing slider 162 is mounted on the hydraulic cylinder 161, and the hydraulic cylinder 161 is used to drive the pressure-bearing slider 162 to move between a first position and a second position. The hydraulic cylinder 161 may be fixedly mounted on the fixed base plate 12.

[0078] In one exemplary embodiment, before unscrewing the threaded sleeve 142, the hydraulic cylinder 161 can drive the pressure slider 162 to retract, so as to make room for the linkage slider 144 to have sufficient retraction space when it retracts. When the threaded sleeve 142 is unscrewed, the second gear 1525 drives the threaded sleeve 142 to retract axially and synchronously, thereby driving the linkage slider 144 to retract. During this process, part of the structure of the linkage slider 144 can extend out of the inclined slider 145.

[0079] The end of the pressure-bearing slider 162 away from the oil cylinder 161 may have a chamfered structure 1621. Before the mold structure is closed and formed, the pressure-bearing slider 162 can be extended and returned to its original position by the oil cylinder 161. During the extension and return process of the pressure-bearing slider 162, the pressure-bearing slider 162 can force the linkage slider 144 to retract into the inclined slider 145 through the inclined chamfered structure 1621, so that the pressure-bearing slider 162 can return to the lower part of the linkage slider 144. As the mold base plate 11 and the fixed base plate 12 close, the pressure-bearing slider 162 pushes the linkage slider 144 and the threaded sleeve 142.

[0080] Please refer to Figure 6 , Figure 7 , Figure 11 and Figure 12 , Figure 11 This is a schematic diagram of the connection structure of an inclined pulley provided in an embodiment of the present invention. Figure 12 yes Figure 11 The diagram shows an exploded view of the connection structure of the inclined pulley. In one optional embodiment, the extension direction of the core 141 is at an angle to the opening and closing direction, that is, the extension direction of the core 141 is not parallel to the opening and closing direction, and the opening and closing direction is the relative movement direction of the mold frame support plate 11 and the fixed base plate 12. The molding assembly 14 also includes an inclined slider 145, which is assembled in the mold frame support plate 11. The core 141 is fixedly connected to the inclined slider 145. The side of the inclined slider 145 near the fixed base plate 12 is exposed on the mold frame support plate 11 and has a strip-shaped limiting groove c1. The mold structure also includes a limiting block 17, which is fixedly connected to the fixed base plate 12. The limiting block 17 has a snap-fit ​​part 171, which is assembled in the strip-shaped limiting groove c1, and the shape of the snap-fit ​​part 171 matches the shape of the strip-shaped limiting groove c1. The end of the core 141 can be assembled in the inclined slider 145. For example, the end of the core 141 can be fixedly assembled in the inclined slider 145 by a U-shaped card. The inclined slider 145 can be connected to the fixed base plate 12 through the strip-shaped limiting groove c1 and the limiting block 17.

[0081] The slider base 143 may have a sliding track, and the inclined slider 145 can be movably connected to the slider base 143 through the sliding track.

[0082] In an optional real-time configuration, the strip-shaped limiting groove c1 may include a T-slot, and the limiting block 17 may include a T-block. During the opening and closing of the mold base plate 11 and the fixed base plate 12, since the T-block and the inclined slider 145 are connected through the T-slot, the T-block can force the inclined slider 145 assembly to slide obliquely along the sliding guide rail on the slider seat 143, thereby driving the core 141 to be pulled out through the inclined slider 145.

[0083] In one exemplary embodiment, during the mold structure closing and forming, as the mold frame support plate 11 and the fixed base plate 12 close, the pressure-bearing slider 162 can simultaneously push the linkage slider 144, the inclined slider 145, the threaded sleeve 142 and the core 141 back to their original positions.

[0084] Please refer to Figure 2 , Figure 6 and Figure 13 , Figure 13 This is a cross-sectional structural diagram of a mold structure in the product ejection state according to an embodiment of the present invention. Optionally, the mold opening and closing mechanism 13 may include a fixed-distance tie rod 131. One end of the fixed-distance tie rod 131 is movably connected to the fixed base plate 12, and the other end of the fixed-distance tie rod 131 is fixedly connected to the mold frame support plate 11. The fixed-distance tie rod 131 is used to limit the opening and closing stroke of the mold frame support plate 11 and the fixed base plate 12. For example, the fixed base plate 12 has a first mounting hole, and the first end of the fixed-distance tie rod 131 is installed in the first mounting hole. The first end of the fixed-distance tie rod 131 has a fifth limiting step, and the opening position of the first mounting hole has a sixth limiting step corresponding to the fifth limiting step. In this way, the two can be movably connected. The second end of the fixed-distance tie rod 131 can be threadedly connected to the mold frame support plate 11.

[0085] In an optional real-time configuration, the mold structure may further include a male template 18 and a female template 19, and the mold opening and closing mechanism 13 may further include a machine base (not shown in the figure) and a spacer plate 131; the male template 18 is located on the side of the mold frame support plate 11 away from the fixed base plate 12 and is fixedly connected to the mold frame support plate 11. For example, the male template 18 and the mold frame support plate 11 are fixedly connected by bolts; the female template 19 is located on the side of the male template 18 away from the mold frame support plate 11, and the female template 19 is movably connected to the male template 18 through the spacer plate 131; the machine base is used to drive the male template 18 and the female template 19 to separate or close.

[0086] When the machine tool drives the male template 18 and female template 19 to open the mold, the female template 19 moves away from the male template 18. After moving a preset distance, the male template 18 and the mold frame support plate 11 can be separated from the fixed base plate 12 by the fixed distance pull plate 131. Similarly, the mold frame support plate 11 and the fixed base plate 12 can be closed by the machine tool closing the mold.

[0087] Please refer to Figure 2 and Figure 13 In one exemplary embodiment, the mold structure further includes an ejector plate 20, which is mounted between the mold base plate 11 and the male mold plate 18. This ejector plate 20 reduces the impact of unscrewing mechanisms (such as the drive assembly 15, the inclined slider 145, and the slider seat 143) on the ejector pin arrangement on the ejector plate 20. An auxiliary ejector roller 21 is fixedly mounted on the ejector plate 20. The auxiliary ejector roller 21 can extend out of the fixed base plate 12 and contact the machine tool ejector roller on the machine tool.

[0088] Please refer to Figure 3 , Figure 5 , Figure 6 , Figure 8 , Figure 9 and Figure 13 In this embodiment of the invention, the operation of the mold structure may include the following steps:

[0089] (1) When the injection molding mold is opened, the pressure-bearing slider 162 retracts under the action of the oil cylinder 161, making room for the linkage slider 144 to avoid it, and providing sufficient space for the linkage slider to retract.

[0090] (2) The hydraulic motor drives the threaded sleeve 142 to unscrew via the driving sprocket 1521, chain 1522, driven sprocket 1523, first gear 1524, third gear 1526 and second gear 1525; while unscrewing, the threaded sleeve 142 can force the second gear 1525 to drive the linkage slider 144 to retract.

[0091] (3) The machine tool drives the female template 19 and male template 18 to open the mold. At the same time, the fixed distance pull plate 131 drives the mold frame support plate 11 to separate from the fixed base plate 12. During this process, the T-block on the fixed base plate 12 can drive the inclined slider 145 to move obliquely, thereby driving the core 141 to achieve the oblique core pulling action.

[0092] (4) The machine tool drives the auxiliary ejector roller to eject the product from the mold, thereby driving the ejector plate 20 to eject the product from the mold.

[0093] (5) When the injection molding mold is closed, the hydraulic cylinder 161 drives the pressure slider 162 to extend and return to its original position, and the machine tool drives the mold to close. During this process, the mold frame support plate 11 and the fixed base plate 12 are closed, and the pressure slider 162 drives the linkage slider 144 and the inclined slider 145 to return to their original positions. This drives the threaded sleeve 142 to return to its original position through the second gear 1525, and drives the core 141 to return to its original position through the inclined slider 145. After returning to its original position, the fixed base plate 12, the pressure slider 162, and the drive assembly 15 can be braked so that the molding assembly 14 remains stationary in the current molding position and enters the next molding cycle.

[0094] It should be noted that the dimensions of the areas may have been exaggerated in the accompanying drawings for clarity. Furthermore, it is understood that when an element is referred to as "on top of" another element, it can be directly on the other element, or there may be intermediate elements. Additionally, it is understood that when an element is referred to as "below" another element, it can be directly below the other element, or there may be more than one intermediate element. Furthermore, it is also understood that when an element is referred to as "between" two elements, it can be the only layer between the two elements, or there may be more than one intermediate element. Similar reference numerals throughout indicate similar elements.

[0095] In this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "multiple" refers to two or more unless otherwise expressly defined.

[0096] The above description is only an optional embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A mold structure, characterized in that, include: Mold frame support plate, fixed base plate, mold opening and closing mechanism, molding components and drive components; The mold frame support plate and the fixed base plate are stacked and arranged; The mold opening and closing mechanism is connected to the mold frame support plate and the fixed base plate respectively, and is used to drive the mold frame support plate and the fixed base plate to separate or close. The molding component is assembled in the mold frame support plate. The molding component includes a core and a threaded sleeve. One end of the core is movably connected to the fixed base plate, and the other end extends out of the mold frame support plate. The threaded sleeve is sleeved on the outside of the core. The drive assembly is mounted on the mold frame support plate. The drive assembly includes a power assembly and a chain drive assembly. The power assembly is connected to one end of the threaded sleeve through the chain drive assembly. The drive assembly is used to drive the threaded sleeve to rotate around the axis of the core and move along the axis of the core through the chain drive assembly; when the mold frame support plate and the fixed base plate are separated, the core can be driven to switch from the core-in state to the core-out state; when the mold frame support plate and the fixed base plate are closed, the core can be driven to switch from the core-out state to the core-in state.

2. The mold structure according to claim 1, characterized in that, The power assembly includes a drive motor, and the chain drive assembly includes a driving sprocket, a chain, a driven sprocket, a first gear, and a second gear. The driving sprocket is mounted on the drive motor, and the driving sprocket is connected to the driven sprocket via the chain. The driven sprocket is coaxially connected to the first gear, and the first gear is meshed with the second gear. The second gear is fixedly connected to the threaded tooth sleeve.

3. The mold structure according to claim 2, characterized in that, The drive assembly also includes a third gear; The third gear is located between the first gear and the second gear, and is meshed with both the first gear and the second gear. The axial length of the third gear is greater than the axial length of the second gear.

4. The mold structure according to claim 2, characterized in that, The molding component further includes a linkage slider, and the mold structure further includes a reset component; The linkage slider is located on the side of the second gear near the fixed base plate. The linkage slider is movably installed in the mold frame support plate and is in contact with the second gear. The reset component is mounted on the fixed base plate and can switch between a first position and a second position. When the reset component is in the first position, it is located on the side of the linkage slider away from the second gear and is in contact with the second gear. When the reset component is in the second position, it is offset from the linkage slider.

5. The mold structure according to claim 4, characterized in that, The linkage slider includes a first slider and a second slider arranged in a direction away from the second gear; The two ends of the first slider are in contact with the second gear and the second slider, respectively; The end of the second slider that is away from the first slider can contact the reset component.

6. The mold structure according to claim 4, characterized in that, The reset assembly includes a hydraulic cylinder and a pressure-bearing slider; The pressure-bearing slider is mounted on the hydraulic cylinder, and the hydraulic cylinder is used to drive the pressure-bearing slider to move between the first position and the second position.

7. The mold structure according to claim 1, characterized in that, The extension direction of the core forms an angle with the opening and closing direction, and the opening and closing direction is the relative movement direction of the mold frame support plate and the fixed base plate. The molding assembly also includes an inclined slider, which is assembled in the mold base plate. The core is fixedly connected to the inclined slider. The side of the inclined slider near the fixed base plate protrudes from the mold base plate and has a strip-shaped limiting groove. The mold structure also includes a limiting block, which is fixedly connected to the fixed base plate. The limiting block has a snap-fit ​​part, which is assembled in the strip-shaped limiting groove, and the shape of the snap-fit ​​part matches the shape of the strip-shaped limiting groove.

8. The mold structure according to claim 7, characterized in that, The strip-shaped limiting groove includes a T-shaped groove, and the limiting block includes a T-shaped block.

9. The mold structure according to claim 1, characterized in that, The mold opening and closing mechanism includes a fixed-distance tie rod. One end of the fixed-distance tie rod is movably connected to the fixed base plate, and the other end of the fixed-distance tie rod is fixedly connected to the mold frame support plate. The fixed-distance tie rod is used to limit the opening and closing stroke of the mold frame support plate and the fixed base plate.

10. The mold structure according to claim 9, characterized in that, The mold structure also includes a male mold plate and a female mold plate, and the mold opening and closing mechanism also includes a machine base and a fixed-distance pull plate; The male template is located on the side of the mold frame support plate away from the fixed base plate, and is fixedly connected to the mold frame support plate; The female template is located on the side of the male template away from the mold frame support plate, and the female template is movably connected to the male template through the fixed-distance tie plate; The machine is used to drive the male template and the female template to separate or close.

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