Injection mold and fixed mold pop-up sliding block driven core-pulling needle mechanism thereof

Abstract

The injection mold comprises a movable mold, a fixed mold and a core-pulling needle, and further comprises an ejection base and a limiting assembly. The pop-up seat is slidably connected to the fixed mold, and a first spring used for driving the pop-up seat to pop up in the direction A during mold opening is arranged between the pop-up seat and the fixed mold; the core-pulling needle is connected to the pop-up seat in a sliding mode, a second spring used for driving the core-pulling needle to pop up in the direction B when the mold is opened is arranged between the core-pulling needle and the pop-up seat, and the core-pulling needle achieves the demolding action in the core direction C along with sliding of the pop-up seat when the mold is opened. And the limiting assembly is used for limiting the sliding of the pop-up seat on the fixed mold and the sliding of the core-pulling needle on the pop-up seat respectively. When the mold is opened, the pop-up seat is popped up by the first spring along the direction A, and meanwhile, the core-pulling needle is popped up by the second spring along the direction B. The core-pulling needle is slidably connected to the pop-up seat, and the movement of the core-pulling needle and the pop-up seat realizes demolding in the core-pulling direction C according to the parallelogram law, so that side core-pulling of a core-pulling hole in a product is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of injection molds, in particular to an injection mold and a fixed mold ejecting slider driving a core pulling needle mechanism thereof. Background Art

[0002] Injection mold demoulding refers to the process of removing plastic products from the mold cavity during the injection molding process. Demolding is one of the key steps in injection molding and directly affects the quality and production efficiency of the product. Among them, the factors that affect the demoulding of plastic parts mainly include: the shape of the plastic part, the performance of the plastic part, and the roughness of the core surface; some existing injection molds can also remove the residual gate on the product during the demoulding process.

[0003] In the prior art, the side core pulling movement on the fixed mold is often performed by using the combination of an inclined guide column and a slider or a cylinder driving the slider. Fig.16 and Fig.17 ,like Fig.16 The product 6 shown in FIG. has a large number of hole structures, and as shown in FIG. Fig.17 The axial direction of the partial core pulling hole 61 shown is not parallel to the mold opening direction of the mold, and the angle between the central axis and the mold opening direction is small, so the side core pulling movement on the fixed mold cannot be performed in the above manner. Summary of the invention

[0004] In order to facilitate the demoulding of the product, the present application provides an injection mold and a fixed mold pop-up slider driving a core pulling pin mechanism.

[0005] The present application provides an injection mold and a fixed mold ejection slider driving a core pulling pin mechanism using the following technical solutions: A fixed mold ejecting slider drives a core pulling needle mechanism, comprising a movable mold, a fixed mold and a core pulling needle, and also comprising an ejecting seat and a limiting component; The ejection seat is slidably connected to the fixed mold, and a first spring is provided between the ejection seat and the fixed mold for driving the ejection seat to eject along direction A when the mold is opened; The core pulling needle is slidably connected to the ejection seat, and a second spring is provided between the core pulling needle and the ejection seat for driving the core pulling needle to eject along direction B when the mold is opened, and the core pulling needle realizes a demoulding action along the core direction C along with the sliding of the ejection seat when the mold is opened; The limiting components are used to limit the sliding of the ejection seat on the fixed mold and the sliding of the core pulling needle on the ejection seat respectively.

[0006] By adopting the above technical solution, when opening the mold, the ejection seat is ejected by the first spring along direction A, and the core pulling pin is ejected by the second spring along direction B. Since the core pulling pin is slidably connected to the ejection seat, the movement of the two realizes demoulding in the core pulling direction C according to the parallelogram law, which is convenient for side core pulling of the core pulling hole on the product and reduces the possibility of core pulling deformation; during the mold closing process, the movable mold moves to abut against the ejection seat and pushes the ejection seat to move until it is reset.

[0007] An injection mold comprises a plurality of inclined rods, a driving assembly and a fixed mold pop-up slider driving a core-pulling needle mechanism, wherein the plurality of inclined rods are respectively obliquely penetrated and slidably connected to the fixed mold plate, and the plurality of inclined rods are respectively detachably connected with cutting heads. The driving assembly is used to drive the variable speed sliding of the plurality of inclined rods. When the mold is opened, the driving assembly first drives the plurality of inclined rods to eject the product, and then accelerates the driving of the plurality of inclined rods until the plurality of cutting heads abut against each other.

[0008] By adopting the above technical scheme, a plurality of inclined rods are driven by a driving assembly to move obliquely, and the inclined rods are first moved slowly to eject the product and separate the product from the fixed mold of the mold, and then the movement of the inclined rods is accelerated so that the blades on the plurality of inclined rods can simultaneously cut the gate on the gate product; the mold can simultaneously cut the gate during the ejection and demoulding process to achieve the effect of slow ejection and fast cutting, thereby reducing the possibility of product damage during the ejection process, and at the same time making the gate cut smooth, facilitating product demoulding, and improving production efficiency and product quality.

[0009] Preferably, the driving assembly includes a sliding plate and a cam, the sliding plate is slidably connected to the fixed mold, and the plurality of inclined rods are respectively slidably connected to the sliding plate, the cam is rotationally connected to the fixed mold, the circumferential side surface of the cam abuts against the sliding plate, and a third spring is provided between the sliding plate and the fixed mold for driving the sliding plate to reset when the mold is closed.

[0010] By adopting the above technical solution, the sliding plate is slidably connected to the fixed mold, providing a sliding carrier and guiding function for the diagonal rod. The cam is rotatably connected to the fixed mold, and its circumferential side abuts on the sliding plate. Through its own rotation, the rotary motion is converted into the linear motion of the sliding plate, thereby providing the required driving power for the diagonal rod. By utilizing the curve change of the cam profile, the sliding plate can obtain different movement speeds at different positions, thereby realizing the variable speed drive of the diagonal rod. During the mold opening process, according to the different stage requirements of product ejection and blade head operation, the diagonal rod is first ejected at a slower speed through the rotation of the cam, and then accelerated until the blade heads abut each other, meeting the requirements for speed changes during the entire operation process. During the mold closing process, the third spring drives the sliding plate back to the initial position to prepare for the next mold opening operation. Ensuring that the sliding plate can be accurately reset helps to ensure the movement accuracy and stability of the entire drive assembly and diagonal rod mechanism in each injection cycle.

[0011] Preferably, the driving assembly further comprises a rack, a gear is coaxially and fixedly connected to the cam, the rack is arranged on the pop-up seat, and the rack is meshingly connected to the gear.

[0012] By adopting the above technical solution, the rack is set on the pop-up seat. When the pop-up seat moves, the rack will move with the pop-up seat, and through the meshing connection between the gear and the rack, the cam coaxially fixedly connected to the gear is driven to rotate, thereby realizing the conversion from the linear motion of the pop-up seat to the rotation of the cam, providing a power source for the movement of subsequent components such as the inclined rod. The meshing transmission of the gear and the rack has high reliability and stability. The tooth shape matching between them can withstand a large load in the process of transmitting motion and power, and is not prone to slipping or tooth disengagement. Even in the frequent mold opening and closing cycles, the normal operation of the drive component can be guaranteed. This reliability and stability helps to improve the working efficiency and service life of the entire injection mold, and reduce production interruptions and maintenance costs caused by failures of the drive component.

[0013] Preferably, there are multiple groups of inclined rods and driving components, and the multiple groups of inclined rods and driving components correspond to multiple gates on the product respectively. A plurality of pop-up blocks are slidably connected to the fixed mold, and the multiple groups of racks are fixedly connected to the multiple pop-up blocks respectively, and the multiple groups of racks are meshed with corresponding gears respectively.

[0014] By adopting the above technical solution, for multiple gates on a product, the treatment of each gate may affect the overall quality and appearance of the product. Through multiple sets of corresponding inclined rods and drive components, it can ensure that the treatment method and effect of each gate are consistent, thereby ensuring the quality consistency of the product at each gate, reducing product defects caused by differences in gate treatment, and improving product quality and molding effect.

[0015] Preferably, it also includes a connecting piece, a forming block is slidably connected to the inclined rod along the mold opening direction, a moving block is slidably connected to the inclined rod, the cutting head is detachably connected to the moving block, and the connecting piece is used to connect the forming block and the moving block. When the mold is opened, the forming block slides toward one side of the inclined rod, and the cutting head slides until it is flush with the forming block. When the mold is closed, the forming block slides toward the side away from the inclined rod, and the cutting head slides to under the forming block.

[0016] By adopting the above technical solution, the connecting piece is used to connect the forming block and the moving block. During the mold opening process, it ensures that the forming block and the moving block can move synchronously. During the mold opening process, as the forming block slides, the blade head also slides to be flush with the forming block. At this time, the blade head is in a suitable position and can cut or separate the product. After the mold is closed, the blade head slides to the bottom of the forming block, so that during the mold closing process, the blade head will not interfere with other mold parts; so that the blade head during the mold opening and closing process of the mold not only ensures the smooth demolding and necessary post-processing operations of the product, but also ensures the normal mold closing and long-term stable operation of the mold, thereby improving the efficiency of injection molding production and product quality.

[0017] Preferably, the connecting member is a guide rod, and a "T"-shaped groove is provided on the oblique rod; one end of the guide rod is slidably connected in the "T"-shaped groove along the mold opening direction, and the other end of the guide rod is fixedly connected to the forming block. A guide groove is provided on the guide rod, and the guide groove is inclined away from the end of the forming block, and one end of the moving block is slidably connected in the guide groove.

[0018] By adopting the above technical solution, a guide groove with an inclined surface is provided on the guide rod, and one end of the moving block is slidably connected in the guide groove. When the moving block moves under the action of the driving assembly, the contact with the inclined surface in the guide groove causes the guide rod to generate a component force along the inclined surface direction, thereby pushing the guide rod and the forming block connected thereto to move. At the same time, since the moving block is connected to the blade head, the movement of the blade head is also indirectly driven, so that the blade head can accurately slide to be flush with the forming block for cutting and other operations when the mold is opened, and can slide to the bottom of the forming block to avoid interference when the mold is closed.

[0019] Preferably, an abutment block is provided on the fixed mold, and during the mold closing process, the molding block moves close to one side of the inclined rod until it abuts against the abutment block, and the side surface of the inclined rod abuts against the abutment block.

[0020] By adopting the above technical solution, the side of the inclined rod abuts against the abutment block, which limits the position of the inclined rod on the fixed mold and the sliding of the inclined rod, reducing the possibility of deviation in the movement of the inclined rod, thereby improving the accuracy and repeatability of the movement of the inclined rod.

[0021] The technical effects of the present invention are mainly reflected in the following aspects: 1. The present invention provides an ejection seat. When the mold is opened, the ejection seat is ejected by the first spring along direction A, and the core pulling needle is ejected by the second spring along direction B. Since the core pulling needle is slidably connected to the ejection seat, the movement of the two is based on the parallelogram law to realize demoulding in the core pulling direction C, which is convenient for side core pulling of the core pulling hole on the product and reduces the possibility of core pulling deformation; 2. The present invention provides an inclined rod and a blade head, and drives a plurality of inclined rods to move obliquely through a driving assembly, so that the inclined rod is first moved slowly to eject the product and separate the product from the fixed mold of the mold, and then the movement of the inclined rod is accelerated so that the blade heads on the plurality of inclined rods simultaneously cut the gates on the gate products; the mold simultaneously cuts the gates during the ejection and demoulding process, so as to achieve the effect of slow ejection and fast cutting, reduce the possibility of product damage during the ejection process, and make the gate cut smooth, so as to facilitate product demoulding, improve production efficiency and product quality; 3. The present invention sets a molding block and a connecting piece. The connecting piece is used to connect the molding block and the moving block. During the mold opening process, it ensures that the molding block and the moving block can move synchronously. During the mold opening process, as the molding block slides, the blade head also slides to be flush with the molding block. At this time, the blade head is in a suitable position and can cut or separate the product. After mold closing, the blade head slides to the bottom of the molding block, so that during the mold closing process, the blade head will not interfere with other mold parts; the blade head ensures the smooth demolding and necessary post-processing operations of the product during the mold opening and mold closing process, and ensures the normal mold closing and long-term stable operation of the mold, thereby improving the efficiency of injection molding production and product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present application.

[0023] Figure 2 It is a schematic diagram of a certain model structure of an embodiment of the present application.

[0024] Figure 3 It is a schematic diagram of the ejection seat structure in Embodiment 1 of the present application.

[0025] Figure 4 It is a schematic diagram of the core-pulling needle structure of Example 1 of the present application.

[0026] Figure 5 It is a schematic diagram of the structure of a drive component according to Embodiment 1 of the present application.

[0027] Figure 6 This is a schematic diagram of the oblique rod structure of Example 2 of the present application.

[0028] Figure 7 is along Figure 6 Enlarged view of point D in the middle.

[0029] Figure 8 is along Figure 7 Enlarged view of point E in the middle.

[0030] Fig. 9 It is a schematic diagram of the state structure of the molding block ejecting the product during the mold opening process of the second embodiment of the present application.

[0031] Fig.10 It is a schematic structural diagram of the state in which the forming block slides along the "T"-shaped groove during the mold opening process of the second embodiment of the present application.

[0032] Fig.11 This is a schematic diagram of the position of the inclined rod in the mold opening state of the second embodiment of the present application.

[0033] Fig.12 This is a schematic diagram of the connecting piece structure of Example 2 of the present application.

[0034] Fig.13 This is a schematic diagram of the "T"-shaped slot structure of Example 2 of the present application.

[0035] Fig.14 Schematic diagram of the pop-up block structure in Embodiment 2 of the present application.

[0036] Fig.15 It is a schematic diagram of the movable mold structure of an embodiment of the present application.

[0037] Fig.16 It is a schematic diagram of the product structure of the embodiment of the present application.

[0038] Fig.17 is along Fig.10 Enlarged view of point F in the middle.

[0039] Explanation of the accompanying drawings: 1. Fixed mold; 11. Pop-up seat; 12. First spring; 13. Core-pulling needle; 14. Second spring; 15. Limiting assembly; 151. Limiting column; 152. Slide rail; 153. Limiting block; 2. Moving mold; 3. Bevel rod; 31. Blade head; 32. Forming block; 33. Moving block; 331. Limiting head; 34. "T"-shaped groove; 4. Driving assembly; 41. Sliding plate; 411. Abutment plate; 412. Small spring; 42. Cam; 421. Gear; 43. Rack; 44. Third spring; 45. Pop-up block; 451. Fourth spring; 5. Connector; 51. Guide rod; 511. Guide groove; 53. Abutment block; 6. Product; 61. Core-pulling hole. DETAILED DESCRIPTION

[0040] The following is combined with Figure 1-Figure 17 The present application is further described in detail to make the technical solution of the present application easier to understand and grasp.

[0041] The embodiment of the present application discloses an injection mold and a fixed mold ejecting slider and a core pulling pin mechanism thereof.

[0042] Reference Figure 3 and Figure 4 A fixed mold pop-up slider drives a core-pulling needle mechanism in this embodiment, comprising a fixed mold 1, a movable mold 2 and a core-pulling needle 13, and also comprising a pop-up seat 11 and a limiting assembly 15; the pop-up seat 11 is slidably connected to the fixed mold 1 along direction A, and a first spring 12 for driving the pop-up seat 11 to pop out along direction A when the mold is opened is arranged between the pop-up seat 11 and the fixed mold 1; the core-pulling needle 13 is slidably connected to the pop-up seat 11, and a second spring 14 for driving the core-pulling needle 13 to pop out along direction B when the mold is opened is arranged between the core-pulling needle 13 and the pop-up seat 11; and the core-pulling needle 13 realizes a demolding action along the core direction C with the sliding of the pop-up seat 11 when the mold is opened. The limiting assembly 15 is used to limit the sliding of the pop-up seat 11 on the fixed mold 1 and the sliding of the core-pulling needle 13 on the pop-up seat 11.

[0043] Reference Figure 3 and Figure 4 The limiting assembly 15 includes two limiting columns 151 and a slide rail 152, the slide rail 152 is fixedly connected to the fixed mold 1, and the pop-up seat 11 is slidably connected to the slide rail 152, one end of the two limiting columns 151 in the axial direction is fixedly connected to the fixed mold 1, and the other end of the two limiting columns 151 in the axial direction is penetrated and slidably connected to the pop-up seat 11, and the two ends of the first spring 12 respectively abut against the limiting columns 151 and the pop-up seat 11; the limiting assembly 15 also includes a limiting block 153, the limiting block 153 is slidably connected to the pop-up block 45, and the limiting block 153 is fixedly connected to the core pulling needle 13, the second spring 14 is sleeved on the core pulling needle 13, and the two ends of the second spring 14 respectively abut against the limiting block 153 and the pop-up seat 11.

[0044] Reference Figure 3 and Figure 4 When the mold is opened, the ejection seat 11 is ejected along the direction A by the first spring 12, and the core pulling pin 13 is ejected along the direction B by the second spring 14. Since the core pulling pin 13 is slidably connected to the ejection seat 11, the movement of the two realizes the demoulding in the core pulling direction C according to the parallelogram law, which is convenient for the side core pulling of the core pulling hole 61 on the product 6 and reduces the possibility of core pulling deformation. During the mold closing process, the movable mold 2 moves to abut against the ejection seat 11. And pushes the ejection seat 11 to move until it is reset. Embodiment 1:

[0045] Reference Figure 1 and Figure 5, an injection mold, further comprising a plurality of groups of inclined rods 3, a plurality of groups of driving components 4 and a fixed mold 1 pop-up slider driving core-pulling needle 13 mechanism, the plurality of groups of driving components 4 respectively correspond to the plurality of groups of inclined rods 3, and the plurality of groups of inclined rods 3 and the driving components 4 respectively correspond to a plurality of gates on a product 6, each group of inclined rods 3 respectively comprises two inclined rods 3, the two inclined rods 3 are respectively obliquely penetrated and slidably connected to a fixed mold 1 plate, and the sliding directions of the two inclined rods 3 are relatively arranged, the top ends of the two inclined rods 3 are respectively slidably connected to a forming block 32 in a mold opening direction, and the two inclined rods 3 are respectively slidably connected to a blade head 31 in a direction perpendicular to the mold opening direction; each group of driving components 4 is respectively used to drive the corresponding two inclined rods 3 to slide at variable speeds, and when the mold is opened, the driving component 4 first drives a plurality of inclined rods 3 to eject the product 6, and then accelerates the driving of a plurality of inclined rods 3 until a plurality of blade heads 31 abut against each other.

[0046] Reference Figure 1 and Figure 5 , the driving assembly 4 drives the plurality of inclined rods 3 to move obliquely, firstly the inclined rods 3 move slowly to eject the product 6, so that the product 6 is separated from the fixed mold 1 of the mold, and then the movement of the inclined rods 3 is accelerated so that the blades 31 on the plurality of inclined rods 3 simultaneously cut the gate on the gate product 6; the mold cuts the gate at the same time during the ejection and demoulding process, so as to achieve the effect of slow ejection and fast cutting, reduce the possibility of damage to the product 6 during the ejection process, and make the gate cut smooth, so as to facilitate the demoulding of the product 6, and improve the production efficiency and the quality of the product 6.

[0047] Reference Figure 1 and Figure 5 The driving assembly 4 includes a sliding plate 41, a cam 42 and a rack 43. The sliding plate 41 is slidably connected to the fixed mold 1. The sliding plate 41 is slidably connected to an abutting plate 411. A plurality of small springs 412 are fixedly connected between the abutting plate 411 and the sliding plate 41. The plurality of small springs 412 always drive the sliding plate 41 and the abutting plate 411 to slide toward opposite sides. A plurality of inclined rods 3 are respectively slidably connected to the sliding plate 41. The cam 42 is rotationally connected to the fixed mold 1. The circumferential side surface of the cam 42 abuts against the abutting plate 411. A gear 421 is coaxially and fixedly connected to the cam 42. A plurality of ejection blocks 45 are slidably connected to the mold 1, and a fourth spring 451 for driving the ejection blocks 45 to slide toward the movable mold 2 is respectively provided on the plurality of ejection blocks 45, and both ends of the fourth spring 451 are respectively abutted against the fixed mold 1 and the corresponding ejection blocks 45; a plurality of groups of racks 43 are respectively fixedly connected to the plurality of ejection blocks 45, one of the racks 43 is slidably connected to the ejection seat 11, and the plurality of groups of racks 43 are respectively meshed with the corresponding gears 421; and a third spring 44 for driving the sliding plates 41 to reset when the mold is closed is respectively provided between the plurality of sliding plates 41 and the fixed mold 1.

[0048] Reference Figure 1 and Figure 5 The sliding plate 41 is slidably connected to the fixed mold 1, providing a sliding carrier and guide for the inclined rod 3. The cam 42 is rotatably connected to the fixed mold 1, and its circumferential side abuts against the sliding plate 41. Through its own rotation, the sliding plate 41 converts the rotary motion into the linear motion, thereby providing the required driving power for the inclined rod 3. By utilizing the curve change of the profile of the cam 42, the sliding plate 41 can obtain different movement speeds at different positions, thereby realizing the variable speed drive of the inclined rod 3.

[0049] Reference Figure 1 and Figure 5 During the mold opening process, according to the requirements of the different stages of the ejection of the product 6 and the operation of the blade head 31, the cam 42 is rotated to make the inclined rod 3 eject the product 6 at a slower speed first, and then accelerate until the blade heads 31 abut against each other, meeting the requirements for speed changes during the entire operation process. During the mold closing process, the third spring 44 drives the sliding plate 41 back to the initial position to prepare for the next mold opening operation. Ensuring that the sliding plate 41 can be accurately reset helps to ensure the movement accuracy and stability of the entire drive assembly 4 and the inclined rod 3 mechanism in each injection cycle.

[0050] Reference Fig. 9 and Fig.10 The small spring 412 is connected between the sliding plate 41 and the abutting plate 411. When the cam 42 hits the abutting plate 411, the small spring 412 can absorb and buffer part of the energy through its own elastic deformation, reduce the rigid collision between the components, and thus protect the sliding plate 41, the abutting plate 411 and other components associated therewith, extend the service life of the components, and reduce the risk of component damage due to frequent impacts.

[0051] Reference Figure 5 The rack 43 is arranged on the pop-up seat 11. When the pop-up seat 11 moves, the rack 43 will move with the pop-up seat 11, and through the meshing connection between the gear 421 and the rack 43, the cam 42 coaxially fixedly connected with the gear 421 is driven to rotate, thereby realizing the conversion from the linear motion of the pop-up seat 11 to the rotation of the cam 42, and providing a power source for the subsequent movement of the inclined rod 3 and other components. The meshing transmission between the gear 421 and the rack 43 has high reliability and stability. The tooth shape matching between them can withstand a large load in the process of transmitting motion and power, and is not prone to slippage or tooth disengagement. Even in the frequent mold opening and closing cycles, the normal operation of the drive component 4 can be guaranteed. This reliability and stability helps to improve the working efficiency and service life of the entire injection mold, and reduce production interruptions and maintenance costs caused by failures of the drive component 4.

[0052] Reference Figure 2For multiple gates on product 6, the treatment of each gate may affect the overall quality and appearance of product 6. Through multiple sets of corresponding inclined rods 3 and driving components 4, it can be ensured that the treatment method and effect of each gate are consistent, thereby ensuring the quality consistency of product 6 at each gate, reducing product 6 defects caused by gate treatment differences, and improving product 6 quality and molding effect.

[0053] Reference Figure 1-Figure 5 , in summary, the mold opening stage of the injection mold: The ejection seat 11 and the core pulling needle 13 are ejected: when the mold is opened, the ejection seat 11 is ejected along the direction A by the first spring 12, and the core pulling needle 13 is ejected along the direction B by the second spring 14. Since the core pulling needle 13 is slidably connected to the ejection seat 11, the movement of the two realizes demoulding in the core pulling direction C according to the parallelogram law, which is convenient for the side core pulling of the core pulling hole 61 on the product 6; The inclined rods 3 eject the product 6: the driving assembly 4 drives a plurality of inclined rods 3 to move obliquely, and the inclined rods 3 first eject the product 6 at a relatively slow speed, so that the product 6 is separated from the fixed mold 1 of the mold; Cutting gate with blade 31: driving assembly 4 accelerates and drives several inclined rods 3 until several blades 31 abut against each other, and cuts the gate on gate product 6 at the same time, achieving the effect of slow ejection and fast cutting. In this process, the forming block 32 with the forming surface of product 6 on each inclined rod 3 slides toward one side of the inclined rod 3, and the blade 31 slides to be flush with the forming block 32, and the blade 31 is in a suitable position for cutting operation.

[0054] Reference Figure 1-Figure 5 , in summary, the closing stage of the injection mold: The ejection seat 11 is reset: the movable mold 2 moves to abut against the ejection seat 11, and pushes the ejection seat 11 to move until it is reset; The sliding plate 41 is reset: the third spring 44 drives the sliding plate 41 back to the initial position to prepare for the next mold opening operation; The forming block 32 and the blade 31 are reset: the forming block 32 slides toward the side away from the inclined rod 3, and the blade 31 slides to the bottom of the forming block 32 to avoid interference with other mold parts during the mold closing process. At the same time, the side of the forming block 32 close to the inclined rod 3 moves until it abuts against the abutment block 53, and the side of the inclined rod 3 also abuts against the abutment block 53. The third spring 44 is sleeved on the inclined rod 3 and its two ends abut against the sliding plate 41 and the abutment block 53 respectively, limiting the position and sliding of the inclined rod 3. Embodiment 2:

[0055] The difference between the second embodiment and the first embodiment is: Fig.12 and Fig.13, also includes a connecting piece 5, each inclined rod 3 is slidably connected with a forming block 32 with a forming surface of a product 6 along the mold opening direction of the mold, and each inclined rod 3 is slidably connected with a moving block 33 along the mold opening direction perpendicular to the mold, and the cutting head 31 is detachably connected to the moving block 33, that is, the cutting head 31 can be installed on the moving block 33 by screws, so as to facilitate the replacement of the cutting head 31 after wear. The connecting piece 5 is used to connect the forming block 32 and the moving block 33. When the mold is opened, the forming block 32 slides toward one side of the inclined rod 3, and the cutting head 31 slides to be flush with the forming block 32. When the mold is closed, the forming block 32 slides toward the side away from the inclined rod 3, and the cutting head 31 slides to below the forming block 32.

[0056] Reference Figure 7-Figure 11 The connecting piece 5 is used to connect the forming block 32 and the moving block 33. During the mold opening process, it ensures that the forming block 32 and the moving block 33 can move synchronously. During the mold opening process, as the forming block 32 slides, the blade head 31 also slides to be flush with the forming block 32. At this time, the blade head 31 is in a suitable position and can cut or separate the product 6. After the mold is closed, the blade head 31 slides to the bottom of the forming block 32, so that during the mold closing process, the blade head 31 will not interfere with other mold parts; so that the blade head 31 during the mold opening and mold closing process, not only ensures the smooth demolding and necessary post-processing operations of the product 6, but also ensures the normal mold closing and long-term stable operation of the mold, thereby improving the efficiency of injection molding production and the quality of product 6.

[0057] Reference Fig. 9 and Fig.10 The connecting member 5 is a guide rod 51. A "T"-shaped groove 34 is provided on the inclined rod 3. One end of the guide rod 51 is slidably connected in the "T"-shaped groove 34 along the mold opening direction. The other end of the guide rod 51 is fixedly connected to the forming block 32. A guide groove 511 is provided on the guide rod 51, and the end of the guide groove 511 away from the forming block 32 is inclined. The end of the moving block 33 away from the blade head 31 is fixedly connected to the limit head 331, and the limit head 331 is slidably connected in the guide groove 511. The guide rod 51 is provided with a guide groove 511 with an inclined surface, and one end of the moving block 33 is slidably connected in the guide groove 511. When the moving block 33 moves under the action of the driving assembly 4, the contact with the inclined surface in the guide groove 511 will cause the guide rod 51 to generate a component force along the inclined surface direction, thereby pushing the guide rod 51 and the forming block connected thereto to move. At the same time, since the moving block 33 is connected to the blade head 31, it also indirectly drives the movement of the blade head 31, so that the blade head 31 can accurately slide to be flush with the forming block 32 for cutting and other operations when the mold is opened, and can slide under the forming block 32 to avoid interference when the mold is closed.

[0058] Reference Figure 7 and Figure 8The fixed mold 1 is fixedly connected with an abutment block 53. During the mold closing process, the molding block 32 moves close to one side of the inclined rod 3 until it abuts against the abutment block 53, and the side of the inclined rod 3 abuts against the abutment block 53. The third spring 44 is sleeved on the inclined rod 3, and the two ends of the third spring 44 abut against the sliding plate 41 and the abutment block 53 respectively. The side of the inclined rod 3 abuts against the abutment block 53, and the position of the inclined rod 3 on the fixed mold 1 and the sliding of the inclined rod 3 are limited, reducing the possibility of deviation in the movement of the inclined rod 3, so as to improve the accuracy and repeatability of the movement of the inclined rod 3.

[0059] Reference Figure 7-Figure 11 , during the mold opening process: Forming block 32: a forming block 32 with a forming surface of the product 6, which is slidably connected to each oblique rod 3 along the mold opening direction, and slides toward one side of the oblique rod 3 when the mold is opened; Moving block 33 and cutting head 31: A moving block 33 is slidably connected to each inclined rod 3 along an axis perpendicular to the mold opening direction, and the cutting head 31 is detachably connected to the moving block 33. As the forming block 32 slides, the guide rod 51 will drive the moving block 33 and the cutting head 31 to move, so that the cutting head 31 slides to a position flush with the forming block 32. This is because the guide groove 511 on the guide rod 51 is tilted away from the end of the forming block 32, and the limit head 331 at one end of the moving block 33 is slidably connected in the guide groove 511. When the moving block 33 moves under the action of the driving assembly 4, it contacts the inclined surface in the guide groove 511 to generate a component force along the direction of the inclined surface, pushing the guide rod 51 and the forming block 32 to move, and at the same time indirectly driving the cutting head 31 to move flush with the forming block 32. At this time, the cutting head 31 is in a suitable position to cut or separate the product 6; Inclined rod 3: The inclined rod 3 is relatively stable in position during the mold opening process, and is mainly used to provide support and guidance for the sliding of the molding block 32 and the moving block 33. Its side surface is in contact with the abutment block 53 and does not move relative to it.

[0060] Reference Figure 7-Figure 11 , mold closing process: The forming block 32 slides toward the side away from the inclined rod 3 until the forming block 32 moves toward the side of the inclined rod 3 and abuts against the abutting block 53 on the fixed mold 1; Moving block 33 and blade head 31: As the forming block 32 slides in the opposite direction, under the action of the guide rod 51, the moving block 33 drives the blade head 31 to slide below the forming block 32. In this way, during the mold closing process, the blade head 31 will not interfere with other mold parts, ensuring the normal mold closing of the mold; Inclined rod 3: The side of the inclined rod 3 abuts against the abutment block 53, and the third spring 44 is sleeved on the inclined rod 3, with both ends abutting against the sliding plate 41 and the abutment block 53. During the mold closing process, the inclined rod 3 is limited by the abutment block 53, and its position is relatively stable. The third spring 44 plays a role of buffering and resetting, while reducing the possibility of deviation of the movement of the inclined rod 3, and improving the accuracy and repeatability of the movement of the inclined rod 3.

[0061] Of course, the above are only typical examples of the present application. In addition, the present application may have many other specific implementation methods. All technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present application.

Claims

1. A fixed mold pop-up slider drives a core-pulling needle mechanism, comprising a movable mold (2), a fixed mold (1) and a core-pulling needle (13), characterized in that: It also includes an ejection seat (11) and a limiting assembly (15); The ejection seat (11) is slidably connected to the fixed mold (1), and a first spring (12) is provided between the ejection seat (11) and the fixed mold (1) for driving the ejection seat (11) to eject along a direction A when the mold is opened; The core pulling needle (13) is slidably connected to the ejection seat (11), and a second spring (14) is provided between the core pulling needle (13) and the ejection seat (11) for driving the core pulling needle (13) to eject along a direction B when the mold is opened, and the core pulling needle (13) slides with the ejection seat (11) when the mold is opened to realize a demoulding action along a core direction C; The limiting assembly (15) is used to limit the sliding of the ejection seat (11) on the fixed mold (1) and the sliding of the core pulling needle (13) on the ejection seat (11).

2. An injection mold, characterized in that: It comprises a plurality of inclined rods (3), a driving assembly (4) and a fixed mold (1) pop-up slider driving a core-pulling needle (13) mechanism as claimed in claim 1, wherein the plurality of inclined rods (3) are respectively penetrated along an inclined direction and slidably connected to the fixed mold (1) plate, and the plurality of inclined rods (3) are respectively detachably connected with a blade head (31), and the driving assembly (4) is used to drive the variable speed sliding of the plurality of inclined rods (3). When the mold is opened, the driving assembly (4) first drives the plurality of inclined rods (3) to eject the product (6), and then accelerates the driving of the plurality of inclined rods (3) until the plurality of blade heads (31) abut against each other.

3. An injection mold according to claim 2, characterized in that: The driving assembly (4) comprises a sliding plate (41) and a cam (42); the sliding plate (41) is slidably connected to the fixed mold (1); a plurality of the inclined rods (3) are respectively slidably connected to the sliding plate (41); the cam (42) is rotatably connected to the fixed mold (1); the circumferential side surface of the cam (42) abuts against the sliding plate (41); and a third spring (44) is provided between the sliding plate (41) and the fixed mold (1) for driving the sliding plate (41) to return to its original position when the mold is closed.

4. An injection mold according to claim 3, characterized in that: The driving assembly (4) further comprises a rack (43), a gear (421) is coaxially and fixedly connected to the cam (42), the rack (43) is arranged on the ejection seat (11), and the rack (43) is meshingly connected to the gear (421).

5. An injection mold according to claim 4, characterized in that: The inclined rods (3) and driving components (4) are provided in multiple groups, and the multiple groups of the inclined rods (3) and driving components (4) correspond to multiple gates on the product (6). The fixed mold (1) is slidably connected with a plurality of ejection blocks (45). The multiple groups of the racks (43) are fixedly connected to the multiple ejection blocks (45), and the multiple groups of the racks (43) are meshedly connected with corresponding gears (421).

6. The injection mold according to claim 2, characterized in that: The invention also comprises a connecting piece (5), wherein a forming block (32) is slidably connected to the inclined rod (3) along the mold opening direction, a moving block (33) is slidably connected to the inclined rod (3), and the cutting head (31) is detachably connected to the moving block (33). The connecting piece (5) is used to connect the forming block (32) and the moving block (33). When the mold is opened, the forming block (32) slides toward one side of the inclined rod (3), and the cutting head (31) slides to be flush with the forming block (32). When the mold is closed, the forming block (32) slides toward a side away from the inclined rod (3), and the cutting head (31) slides to below the forming block (32).

7. An injection mold according to claim 6, characterized in that: The connecting member (5) is a guide rod (51), and a "T"-shaped groove (34) is provided on the oblique rod (3); one end of the guide rod (51) is slidably connected in the "T"-shaped groove (34) along the mold opening direction, and the other end of the guide rod (51) is fixedly connected to the forming block (32); a guide groove (511) is provided on the guide rod (51), and the end of the guide groove (511) away from the forming block (32) is inclined, and one end of the moving block (33) is slidably connected in the guide groove (511).

8. An injection mold according to claim 7, characterized in that: The fixed mold (1) is provided with an abutment block (53). During the mold closing process, the molding block (32) moves close to one side of the inclined rod (3) until it abuts against the abutment block (53), and the side of the inclined rod (3) abuts against the abutment block (53).

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