Anti-deformation efficient lateral core-pulling injection mold structure

Abstract

The utility model discloses an anti-deformation efficient lateral core-pulling injection mold structure, and relates to the technical field of injection molds. The device comprises a bottom plate, a lower die is arranged on the upper side of the bottom plate, a mounting frame is fixedly connected to the upper side of the bottom plate, a hydraulic cylinder is arranged on the upper side of the mounting frame, the output end of the hydraulic cylinder is fixedly connected with an upper die matched with the lower die, and a driving mechanism is arranged in the lower die; and a circular groove is formed in the upper side of the inner wall of the lower mold. Through the arrangement of the connecting rod and the push plate, when the driving mechanism drives the connecting rod and the connecting plate, under the action of the push block and the push plate, a molded part subjected to injection molding is ejected out, demolding of an injection mold is facilitated, damage to the molded part is reduced, meanwhile, through the arrangement of the core pulling mechanism, the mold core freely shrinks in the mold cavity, and the mold core is prevented from being damaged. Manual operation is not needed, and the use convenience of the equipment is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of injection molds, and specifically relates to a deformation-preventing and efficient side core-pulling injection mold structure. Background Art

[0002] A core-pulling injection mold is a special mold structure used for producing plastic products with side grooves, holes or protrusions. These features are usually perpendicular to the mold opening direction, so they will hinder the smooth removal of the product during the demolding process. To solve this problem, a core-pulling mechanism is designed, which allows a part of the mold to move laterally during the mold opening process, thereby releasing the product and enabling it to be ejected.

[0003] Chinese Patent with application number CN202021287031.7 discloses an injection mold with a side core-pulling structure, which relates to the field of injection molds and includes a lower mold. An upper mold is arranged on the top of the lower mold. Cavities are opened between the lower mold and the upper mold. A core-pulling groove is opened on one side of the cavity in the lower mold. A stable core-pulling mechanism is installed inside the core-pulling groove. The stable core-pulling mechanism includes two fixed blocks, and limit blocks are fixedly connected to one ends of the opposite faces of the two fixed blocks.

[0004] In the utility model, by inserting the movable push rod into the rod sleeve on the core-pulling rod and then pushing the fixed insertion frame to insert the fixed insertion frame into the fixed head for fixation, an effective supporting effect can be provided for the core-pulling rod, improving the stability of core-pulling and avoiding core-pulling deviation. However, in actual use, when using the ejector rod to demold the injection mold, the force-bearing area is small, which easily causes damage to the molded part. Moreover, in the above solution, when core-pulling, it is necessary to use a fixed insertion frame to limit the fixed head, and the operation is relatively inconvenient, resulting in a reduction in processing efficiency.

[0005] In view of this, the present utility model is specifically proposed. Summary of the Utility Model

[0006] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a deformation-preventing and efficient side core-pulling injection mold structure.

[0007] To solve the above technical problems, the basic concept of the technical solution adopted by the utility model is as follows:

[0008] A deformation-preventing and efficient side core-pulling injection mold structure includes: a bottom plate, a lower mold is installed on the upper side of the bottom plate, an installation frame is fixedly connected to the upper side of the bottom plate, a hydraulic cylinder is installed on the upper side of the installation frame, the output end of the hydraulic cylinder is fixedly connected to an upper mold that cooperates with the lower mold, and a driving mechanism is arranged inside the lower mold;

[0009] A circular groove is formed on the upper side of the inner wall of the lower mold. A connecting rod is slidably fitted on the inner wall of the circular groove. A spring is sleeved on the connecting rod, and two ends of the spring are fixedly connected to the circular groove and the connecting rod respectively. The upper end of the connecting rod is fixedly connected with a pushing block. A connecting plate is slidably fitted on the upper side of the lower mold. A pushing plate is fixedly connected to the upper side of the connecting plate. A cavity is formed on the lower side of the upper mold. An installation groove is formed on one side of the inner wall of the cavity. A core-pulling mechanism is arranged inside the installation groove.

[0010] By arranging the connecting rod and the pushing plate, when the driving mechanism drives the connecting rod and the connecting plate, under the action of the pushing block and the pushing plate, the formed part after injection molding is ejected, which is convenient for demolding the injection mold and reduces damage to the formed part. At the same time, through the arranged core-pulling mechanism, the core can freely contract in the cavity without manual operation, improving the convenience of equipment use.

[0011] Preferably, the driving mechanism includes a cylinder installed on the upper side of the bottom plate. The output end of the cylinder is fixedly connected with a lifting plate. A chute is formed on the upper side of the lifting plate. A trapezoidal slider is slidably fitted on the inner wall of the chute. An inclined guide rod is fixedly connected to the upper side of the inner wall of the lower mold.

[0012] Preferably, the lifting plate is slidably fitted on the inner wall of the lower mold. The trapezoidal slider is slidably fitted on the inclined guide rod. The upper side of the lifting plate is fixedly connected to the lower side of the connecting plate.

[0013] Preferably, the core-pulling mechanism includes a fixing plate slidably fitted on the inner wall of the installation groove. A core is fixedly connected to one side of the fixing plate and is slidably fitted on the inner wall of the cavity. A connecting shell is slidably fitted on the lower side of the inner wall of the installation groove. A connecting rod is arranged between the connecting shell and the fixing plate. A limiting rod is slidably fitted on the inner wall of the connecting shell. A return spring is sleeved on the limiting rod.

[0014] Preferably, two ends of the connecting rod are respectively rotatably fitted with the fixing plate and the connecting shell. The upper end of the limiting rod is fixedly connected to the upper side of the inner wall of the installation groove. Two ends of the return spring are fixedly connected to the installation groove and the connecting shell respectively.

[0015] Preferably, limiting grooves are formed on both sides of the inner wall of the installation groove. Limiting blocks are slidably fitted on the inner walls of the limiting grooves. The limiting blocks are fixedly connected to the fixing plate.

[0016] Preferably, two guide rods are slidably fitted on the upper side of the installation frame. The bottom ends of the guide rods are fixedly connected to the upper side of the upper mold.

[0017] After adopting the above technical solutions, the present utility model has the following beneficial effects compared with the prior art. Of course, any product implementing the present utility model does not necessarily need to achieve all the advantages described below at the same time:

[0018] By setting the connecting rod and the pushing plate, when the driving mechanism drives the connecting rod and the connecting plate, under the action of the pushing block and the pushing plate, the molded part after injection molding is ejected, which facilitates the demolding of the injection mold and reduces damage to the molded part. At the same time, through the set core-pulling mechanism, the mold core can freely contract in the mold cavity without manual operation, improving the convenience of equipment use.

[0019] The following further describes in detail the specific implementation manners of the present utility model in conjunction with the accompanying drawings. Description of the Drawings

[0020] The following drawings in the description are only some embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts. In the attached

[0021] In the drawings:

[0022] Figure 1 is a three-dimensional structure schematic diagram of an embodiment of the present utility model;

[0023] Figure 2 is a cross-sectional structure schematic diagram of the lower mold of an embodiment of the present utility model;

[0024] Figure 3 is a partial exploded structure schematic diagram of an embodiment of the present utility model;

[0025] Figure 4 is a connection structure schematic diagram of the driving mechanism of an embodiment of the present utility model;

[0026] Figure 5 is a connection structure schematic diagram of the inclined guide rod of an embodiment of the present utility model;

[0027] Figure 6 is a structure schematic diagram of the core-pulling mechanism of an embodiment of the present utility model.

[0028] In the drawings, the list of components represented by each reference numeral is as follows:

[0029] 1, bottom plate; 2, lower mold; 3, mounting frame; 4, hydraulic cylinder; 5, upper mold; 6, driving mechanism; 61, air cylinder; 62, lifting plate; 63, sliding groove; 64, trapezoidal slider; 65, inclined guide rod; 7, circular groove; 8, connecting rod; 9, spring; 10, pushing block; 11, connecting plate; 12, pushing plate; 13, mold cavity; 14, mounting groove; 15, core-pulling mechanism; 151, fixing plate; 152, mold core; 153, connecting shell; 154, connecting rod; 155, limiting rod; 156, return spring; 16, limiting groove; 17, limiting block; 18, guide rod.

[0030] It should be noted that these attached drawings and textual descriptions are not intended to limit the scope of the concept of the present utility model in any way, but rather to illustrate the concept of the present utility model to those skilled in the art by referring to specific embodiments. Detailed Embodiment

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the attached drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model.

[0032] Therefore, the following detailed description of the embodiments of the present utility model is not intended to limit the scope of the present utility model claimed, but merely represents some embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0033] It should be noted that, without conflict, the embodiments in the present utility model and the features and technical solutions in the embodiments may be combined with each other.

[0034] It should be noted that similar reference numerals and letters denote similar items in the following attached drawings. Therefore, once an item is defined in one attached drawing, it does not need to be further defined and explained in subsequent attached drawings.

[0035] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the attached drawings, or the orientation or positional relationship in which the inventive product is usually placed during use, or the orientation or positional relationship commonly understood by those skilled in the art. Such terms are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. In addition, terms such as "first" and "second" are only used for descriptive distinction and cannot be construed as indicating or implying relative importance.

[0036] Specifically, please refer to Figure 1-6 As shown, in this embodiment, a deformation-proof and highly efficient side-core-pulling injection mold structure is provided, including: a bottom plate 1, a lower mold 2 is installed on the upper side of the bottom plate 1, an installation frame 3 is fixedly connected to the upper side of the bottom plate 1, a hydraulic cylinder 4 is installed on the upper side of the installation frame 3, the output end of the hydraulic cylinder 4 is fixedly connected to an upper mold 5 that cooperates with the lower mold 2, and a driving mechanism 6 is arranged inside the lower mold 2;

[0037] On the upper side of the inner wall of the lower mold 2, a circular groove 7 is opened. A connecting rod 8 is slidably fitted on the inner wall of the circular groove 7. A spring 9 is sleeved on the connecting rod 8, and both ends of the spring 9 are fixedly connected to the circular groove 7 and the connecting rod 8 respectively. The upper end of the connecting rod 8 is fixedly connected with a push block 10. A connecting plate 11 is slidably fitted on the upper side of the lower mold 2. A push plate 12 is fixedly connected to the upper side of the connecting plate 11. A mold cavity 13 is opened on the lower side of the upper mold 5. An installation groove 14 is opened on one side of the inner wall of the mold cavity 13, and a core-pulling mechanism 15 is arranged inside the installation groove 14.

[0038] By providing the connecting rod 8 and the push plate 12, when the driving mechanism 6 drives the connecting rod 8 and the connecting plate 11, under the action of the push block 10 and the push plate 12, the formed part after injection molding is ejected, which is convenient for demolding the injection mold and reduces damage to the formed part. At the same time, by providing the core-pulling mechanism 15, the core 152 can freely contract in the mold cavity 13 without manual operation, improving the convenience of equipment use.

[0039] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0040] It should be noted that, without conflict, the embodiments in the present invention and the features and technical solutions in the embodiments can be combined with each other.

[0041] It should be noted that similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0042] Embodiment 1

[0043] Please refer to Figure 1-6 , including: a bottom plate 1. A lower mold 2 is installed on the upper side of the bottom plate 1. An installation frame 3 is fixedly connected to the upper side of the bottom plate 1. A hydraulic cylinder 4 is installed on the upper side of the installation frame 3. The output end of the hydraulic cylinder 4 is fixedly connected with an upper mold 5 that cooperates with the lower mold 2. A driving mechanism 6 is arranged inside the lower mold 2;

[0044] On the upper side of the inner wall of the lower mold 2, a circular groove 7 is opened. A connecting rod 8 is slidably fitted on the inner wall of the circular groove 7. A spring 9 is sleeved on the connecting rod 8, and both ends of the spring 9 are fixedly connected to the circular groove 7 and the connecting rod 8 respectively. The upper end of the connecting rod 8 is fixedly connected with a push block 10. A connecting plate 11 is slidably fitted on the upper side of the lower mold 2. A push plate 12 is fixedly connected to the upper side of the connecting plate 11. A mold cavity 13 is opened on the lower side of the upper mold 5. An installation groove 14 is opened on one side of the inner wall of the mold cavity 13, and a core-pulling mechanism 15 is arranged inside the installation groove 14. Two guide rods 18 are slidably fitted on the upper side of the installation frame 3, and the bottom ends of the guide rods 18 are fixedly connected to the upper side of the upper mold 5.

[0045] Implementation process: Under the action of the driving mechanism 6, the connecting rod 8 and the connecting plate 11 are driven, causing the connecting rod 8 to squeeze the spring 9 and contract. The rising of the connecting rod 8 drives the push block 10 to eject the upper side of the inner wall of the molded part, and the connecting plate 11 rises synchronously with the connecting rod 8 to eject the periphery of the lower side of the molded part, facilitating the ejection of the injection molded part.

[0046] Implementation benefits: Facilitate the demolding of the molded parts processed by the injection mold, and the molded parts are uniformly stressed, avoiding damage to the molded parts caused by demolding.

[0047] Example 2

[0048] The driving mechanism 6 includes a cylinder 61 installed on the upper side of the bottom plate 1. The output end of the cylinder 61 is fixedly connected with a lifting plate 62. A sliding groove 63 is opened on the upper side of the lifting plate 62. A trapezoidal slider 64 is slidably fitted on the inner wall of the sliding groove 63. An inclined guide rod 65 is fixedly connected to the upper side of the inner wall of the lower mold 2. The lifting plate 62 is slidably fitted on the inner wall of the lower mold 2. The trapezoidal slider 64 is slidably fitted on the inclined guide rod 65. The upper side of the lifting plate 62 is fixedly connected with the lower side of the connecting plate 11.

[0049] Implementation process: Under the action of the cylinder 61, the lifting plate 62 is driven to move upward. Under the guidance of the inclined guide rod 65, the trapezoidal slider 64 slides in the sliding groove 63, and the sliding groove 63 moves to squeeze the bottom of the connecting rod 8, causing the connecting rod 8 to drive the push block 10 to rise. At the same time, the rising of the lifting plate 62 will drive the connecting plate 11 to drive the push plate 12.

[0050] Implementation benefits: Facilitate the driving of the connecting rod 8 and the connecting plate 11, so that the push block 10 and the push plate 12 eject the injection molded parts.

[0051] Example 3

[0052] The core-pulling mechanism 15 includes a fixing plate 151 slidably fitted on the inner wall of the installation groove 14. One side of the fixing plate 151 is fixedly connected with a core 152 slidably fitted on the inner wall of the mold cavity 13. A connecting shell 153 is slidably fitted on the lower side of the inner wall of the installation groove 14. A connecting rod 154 is arranged between the connecting shell 153 and the fixing plate 151. A limiting rod 155 is slidably fitted on the inner wall of the connecting shell 153. A return spring 156 is sleeved on the limiting rod 155. The two ends of the connecting rod 154 are rotatably fitted with the fixing plate 151 and the connecting shell 153 respectively. The upper end of the limiting rod 155 is fixedly connected with the upper side of the inner wall of the installation groove 14. The two ends of the return spring 156 are fixedly connected with the installation groove 14 and the connecting shell 153 respectively. Limiting grooves 16 are opened on both sides of the inner wall of the installation groove 14. Limiting blocks 17 are slidably fitted on the inner walls of the limiting grooves 16. The limiting blocks 17 are fixedly connected with the fixing plate 151.

[0053] Implementation process: When the equipment is clamping the mold, the upper mold 5 moves downward under the drive of the hydraulic cylinder 4. When the connecting shell 153 contacts the push plate 12, the connecting shell 153 moves upward under the pressure. Driven by the connecting rod 154, the fixed plate 151 is driven, so that the fixed plate 151 drives the mold core 152 to eject. Then, injection molding materials are processed in the mold cavity 13. After the processing is completed, when the upper mold 5 rises, under the action of the tension spring and the return spring 156 on one side of the fixed plate 151 in the installation groove 14, the connecting shell 153 is ejected, and at the same time, the mold core 152 is driven to contract into the installation groove 14.

[0054] Implementation benefits: The mold core 152 can be automatically contracted and ejected, which is convenient for core pulling of the formed parts, facilitates demolding, and reduces the manual labor volume.

[0055] The above embodiments are only used to illustrate the present invention and do not limit the technical solutions described in the present invention. Although this specification has described the present invention in detail with reference to the above embodiments, the present invention is not limited to the above specific implementation manners. Therefore, any modification or equivalent replacement to the present invention; and all technical solutions and their improvements that do not depart from the spirit and scope of the invention are covered by the scope of the claims of the present invention.

Claims

1. An injection mold structure with anti-deformation and efficient lateral core-pulling, characterized in that, Including: A bottom plate (1), on the upper side of the bottom plate (1), a lower mold (2) is installed. On the upper side of the bottom plate (1), a mounting frame (3) is fixedly connected. On the upper side of the mounting frame (3), a hydraulic cylinder (4) is installed. The output end of the hydraulic cylinder (4) is fixedly connected to an upper mold (5) that cooperates with the lower mold (2). Inside the lower mold (2), a driving mechanism (6) is provided. On the upper side of the inner wall of the lower mold (2), a circular groove (7) is opened. The inner wall of the circular groove (7) is slidably fitted with a connecting rod (8). A spring (9) is sleeved on the connecting rod (8), and both ends of the spring (9) are fixedly connected to the circular groove (7) and the connecting rod (8) respectively. The upper end of the connecting rod (8) is fixedly connected to a push block (10). On the upper side of the lower mold (2), a connecting plate (11) is slidably fitted. On the upper side of the connecting plate (11), a push plate (12) is fixedly connected. On the lower side of the upper mold (5), a mold cavity (13) is opened. On one side of the inner wall of the mold cavity (13), a mounting groove (14) is opened. Inside the mounting groove (14), a core-pulling mechanism (15) is provided.

2. The structure of an anti-deformation and high-efficiency side core-pulling injection mold according to claim 1, characterized in that The driving mechanism (6) includes a cylinder (61) installed on the upper side of the bottom plate (1). The output end of the cylinder (61) is fixedly connected to a lifting plate (62). On the upper side of the lifting plate (62), a sliding groove (63) is opened. The inner wall of the sliding groove (63) is slidably fitted with a trapezoidal slider (64). On the upper side of the inner wall of the lower mold (2), an inclined guide rod (65) is fixedly connected.

3. The structure of an anti-deformation and highly efficient side core-pulling injection mold according to claim 2, wherein, The lifting plate (62) is slidably fitted inside the inner wall of the lower mold (2). The trapezoidal slider (64) is slidably fitted on the inclined guide rod (65). The upper side of the lifting plate (62) is fixedly connected to the lower side of the connecting plate (11).

4. The structure of an anti-deformation and highly efficient side core-pulling injection mold according to claim 1, wherein, The core-pulling mechanism (15) includes a fixing plate (151) slidably fitted inside the inner wall of the mounting groove (14). On one side of the fixing plate (151), a mold core (152) slidably fitted inside the inner wall of the mold cavity (13) is fixedly connected. On the lower side of the inner wall of the mounting groove (14), a connecting shell (153) is slidably fitted. Between the connecting shell (153) and the fixing plate (151), a connecting rod (154) is provided. The inner wall of the connecting shell (153) is slidably fitted with a limiting rod (155). A reset spring (156) is sleeved on the limiting rod (155).

5. The structure of an anti-deformation and high-efficiency side core-pulling injection mold according to claim 4, characterized in that, Both ends of the connecting rod (154) are rotatably fitted with the fixing plate (151) and the connecting shell (153) respectively. The upper end of the limiting rod (155) is fixedly connected to the upper side of the inner wall of the mounting groove (14). Both ends of the reset spring (156) are fixedly connected to the mounting groove (14) and the connecting shell (153) respectively.

6. The structure of an anti-deformation and highly efficient side core-pulling injection mold according to claim 5, wherein, On both sides of the inner wall of the mounting groove (14), limiting grooves (16) are opened. The inner walls of the limiting grooves (16) are slidably fitted with limiting blocks (17). The limiting blocks (17) are fixedly connected to the fixing plate (151).

7. The structure of an anti-deformation and highly efficient side core-pulling injection mold according to claim 1, characterized in that On the upper side of the mounting frame (3), two guide rods (18) are slidably fitted. The bottom ends of the guide rods (18) are fixedly connected to the upper side of the upper mold (5).

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