Die structure

Abstract

The utility model relates to the technical field of molds, in particular to a mold structure which comprises a bottom plate, two bottom blocks and four supporting rods are fixed to the upper surface of the bottom plate, a box body is fixed to the upper surfaces of the four supporting rods, a mold opening mechanism is arranged in the box body, and a lower mold is fixed to the upper surfaces of the two bottom blocks; a core pulling mechanism is arranged on the lower mold, an upper mold is arranged on the mold opening mechanism, the core pulling mechanism comprises a second shell fixed to the front end of the lower mold and a first shell fixed to the rear end of the lower mold, a driving assembly is arranged in the first shell, and two moving blocks are arranged on the driving assembly; and a fixed rod is fixed between the left side and the right side of the inner cavity of the second shell. According to the mold structure, the first motor drives the first bevel gear to rotate and drives the second bevel gear and the first threaded rod to rotate together, so that the two moving blocks move oppositely, the moving blocks drive the sliding block and the side core to move together through the connecting rod, the side core is far away from a workpiece, and demolding of the workpiece is facilitated.

Description

Technical Field

[0001] The present application relates to the field of mold technology, and in particular to a mold structure. Background Art

[0002] The core pulling is used to deal with the position on the parting surface of the product that cannot be demolded, also called undercut. In order to ensure the smooth demolding of the undercut product, there are also inner and outer sliders and bevel tops, which are needed for the production of the inner core of the lock.

[0003] For example, a Chinese patent (publication number: CN209257310U) discloses a core-pulling mold, including an upper cover, an upper plate, an upper frame, an upper mold, a lower mold, a lower frame and a base, which are arranged in sequence from top to bottom. The upper mold is arranged in the upper frame, and oblique guide columns inclined outward are formed on both sides of the upper frame. The lower mold is arranged in the lower frame, and sliders are arranged on both sides of the lower frame. A mold core is arranged laterally inward on the slider, and a guide hole adapted to the oblique guide column is formed in the center of the slider. The oblique guide column passes through the guide hole. A positioning platform is formed downward at the center of the upper cover, and a circular table surface which is larger at the top and smaller at the bottom is formed in the middle of the positioning table. Positioning holes adapted to the positioning platform are formed in the centers of the upper plate and the upper frame, and an inner circular table surface adapted to the circular table surface is formed on the positioning hole. The utility model uses oblique guide columns to complete core pulling during the upward movement of the upper mold, which is completed in one step, easy to operate, high in production efficiency, fast mold assembly speed, and precise positioning.

[0004] The above-mentioned core-pulling mold still has certain shortcomings. Although it uses an inclined guide pin to complete the core pulling during the upward movement of the upper mold, the entire mold opening process is completed in one step, the operation is convenient, and the production efficiency is high; at the same time, a positioning table with a round table is arranged on the upper cover, and at the beginning, the smaller surface of the lower end of the round table is inserted into the larger hole, and no precise alignment is required. When the positioning table goes deeper, the round table surface and the positioning hole are gradually adapted, so as to achieve the final precise positioning, the assembly speed is fast, and the mold is not easily damaged by collision. However, during the opening and closing process of the mold, the inclined guide pin slides back and forth in the inclined guide hole. Since the inclined guide pin is exposed to the external environment, it is inevitable that impurities will adhere to the inclined guide pin. In this case, when the inclined guide pin is inserted into the inclined guide hole, it will cause the inclined guide pin to get stuck after a long period of use, and the opening and closing of the mold is not flexible, which reduces the product quality and has low production efficiency. Therefore, the present application proposes a mold structure to solve the above problems. Utility Model Content

[0005] In view of the deficiencies in the prior art, the present application provides a mold structure having the advantages of convenient core pulling, etc., thus solving the problem of inconvenient core pulling.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a mold structure, comprising a bottom plate, two bottom blocks and four support rods are fixed to the upper surface of the bottom plate, a box is fixed to the upper surface of the four support rods, a mold opening mechanism is provided inside the box, a lower mold is fixed to the upper surface of the two bottom blocks, a core pulling mechanism is provided on the lower mold, and an upper mold is provided on the mold opening mechanism;

[0007] The core pulling mechanism includes a second shell fixed at the front end of the lower mold and a first shell fixed at the rear end of the lower mold, a driving assembly is provided inside the first shell, two moving blocks are provided on the driving assembly, a fixing rod is fixed between the left and right sides of the inner cavity of the second shell, two connecting rods are fixed on the opposite sides of the two moving blocks, sliding blocks are fixed on the opposite sides of the left and right connecting rods, and side cores are fixed on the opposite sides of the left and right sliding blocks, and the core pulling mechanism also includes multiple fixed blocks fixed on the left and right sides of the upper surface of the lower mold.

[0008] By adopting the above technical solution, the core is pulled out by the core pulling mechanism to prevent the demoulding of the workpiece from being affected, and the upper mold is driven to move by the mold opening mechanism to keep the upper mold away from the lower mold, thereby facilitating the removal of the workpiece.

[0009] Furthermore, the driving assembly includes a first motor fixed to the back side of the inner cavity of the first shell, a first bevel gear is fixed to the output shaft of the first motor, a first threaded rod is rotatably connected between the left and right sides of the inner cavity of the first shell through a bearing seat, a second bevel gear meshing with the first bevel gear is fixed to the outer surface of the first threaded rod, and the two moving blocks are threadedly connected to the outer surface of the first threaded rod.

[0010] By adopting the above technical solution, the two moving blocks are driven by the driving assembly to move relative to each other or away from each other at the same time.

[0011] Furthermore, a sliding hole is opened on the left side of the moving block, and the moving block is slidably connected to the outer surface of the fixing rod through the sliding hole.

[0012] By adopting the above technical solution, the stability of the moving block is increased during movement.

[0013] Furthermore, the sliding block is slidably connected between the two fixed blocks, and the lower surface of the sliding block is slidably connected to the upper surface of the lower mold.

[0014] The above technical solution is adopted to increase the stability of the slider when it moves.

[0015] Furthermore, two fixing plates are fixed on the front side of the inner cavity of the first shell, a rotating hole is opened on the left side of the fixing plate, and the first threaded rod is rotatably connected to the inside of the rotating hole through a bearing.

[0016] By adopting the above technical solution, the stability of the first threaded rod during rotation is increased.

[0017] Furthermore, the mold opening mechanism includes a second motor fixed to the left side of the inner cavity of the box body, the output shaft of the second motor is fixed with a rotating rod, the outer surface of the rotating rod is fixed with two third bevel gears, the outer surface of the third bevel gear is meshed with a fourth bevel gear, the lower surface of the fourth bevel gear is fixed with a second threaded rod, and the outer surface of the second threaded rod is threadedly connected with a rod sleeve.

[0018] By adopting the above technical solution, the upper die is driven to move by the die opening mechanism, so that the upper die is away from the lower die, making it convenient to remove the workpiece.

[0019] Furthermore, the upper mold is fixed to the lower surfaces of the two rod sleeves, and the right side of the rotating rod is rotatably connected to the right side of the inner cavity of the box body through a bearing seat.

[0020] By adopting the above technical solution, the second threaded rod is rotated to drive the rod sleeve and the upper mold to move together, so as to facilitate the opening and closing of the mold.

[0021] Furthermore, a slide plate is fixed on the opposite sides of the two rod sleeves, and the slide plate is slidably connected to the outer surface of the support rod.

[0022] The above technical solution is adopted to increase the stability of the rod sleeve when it moves.

[0023] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0024] 1. The mold structure, through the core pulling mechanism, the first motor drives the first bevel gear to rotate, drives the second bevel gear and the first threaded rod to rotate together, so that the two moving blocks move back to back, and the moving block drives the slider and the side core to move together through the connecting rod, so that the side core is away from the workpiece, which is convenient for demolding of the workpiece.

[0025] 2. The mold structure, through the mold opening mechanism, the second motor drives the rotating rod and the two third bevel gears to rotate together, drives the fourth bevel gear and the second threaded rod to rotate, drives the rod sleeve and the upper mold to move together, so that the upper mold is away from the lower mold, which is convenient for removing the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the structure of this application;

[0027] Figure 2 This is a top view of the core pulling mechanism of the present application;

[0028] Figure 3 This is a structural schematic diagram of the mold opening mechanism for this application.

[0029] In the figure: 1 bottom plate, 2 support rod, 3 core pulling mechanism, 301 first shell, 302 first motor, 303 first bevel gear, 304 first threaded rod, 305 second bevel gear, 306 moving block, 307 second shell, 308 fixed rod, 309 fixed block, 310 connecting rod, 311 slider, 312 side core, 4 mold opening mechanism, 401 second motor, 402 rotating rod, 403 third bevel gear, 404 fourth bevel gear, 405 second threaded rod, 406 rod sleeve, 5 box, 6 bottom block, 7 lower mold, 8 upper mold. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0031] See also Figure 1 A mold structure in this embodiment includes a bottom plate 1, two bottom blocks 6 and four support rods 2 are fixed on the upper surface of the bottom plate 1, a box 5 is fixed on the upper surface of the four support rods 2, a mold opening mechanism 4 is arranged inside the box 5, a lower mold 7 is fixed on the upper surface of the two bottom blocks 6, and a core pulling mechanism 3 is arranged on the lower mold 7 for core pulling to prevent the demolding of the workpiece from being affected. At the same time, an upper mold 8 is arranged on the mold opening mechanism 4, and the upper mold 8 is driven by the mold opening mechanism 4 to move so that the upper mold 8 is away from the lower mold 7, so as to facilitate the removal of the workpiece.

[0032] See also Figure 2 In order to facilitate core pulling, the core pulling mechanism 3 includes a second shell 307 fixed at the front end of the lower mold 7 and a first shell 301 fixed at the rear end of the lower mold 7. A driving assembly is provided inside the first shell 301, and two moving blocks 306 are provided on the driving assembly. The two moving blocks 306 are driven by the driving assembly to move relative to or opposite to each other at the same time. A fixed rod 308 is fixed between the left and right sides of the inner cavity of the second shell 307, and two connecting rods 310 are fixed on the opposite sides of the two moving blocks 306. A slider 311 is fixed on the opposite sides of the left and right connecting rods 310, and a side core 312 is fixed on the opposite sides of the left and right sliders 311. The core pulling mechanism 3 also includes a plurality of evenly distributed fixed blocks 309 fixed on the left and right sides of the upper surface of the lower mold 7 for further limiting the slider 311.

[0033] Among them, the driving component includes a first motor 302 fixed to the back side of the inner cavity of the first shell 301, the output shaft of the first motor 302 is fixed with a first bevel gear 303, and a first threaded rod 304 is rotatably connected between the left and right sides of the inner cavity of the first shell 301 through a bearing seat. The two sections of the thread of the first threaded rod 304 are in opposite directions, and the outer surface of the first threaded rod 304 is fixed with a second bevel gear 305 meshing with the first bevel gear 303, and two moving blocks 306 are threadedly connected to the outer surface of the first threaded rod 304. The first motor 302 drives the first bevel gear 303 to rotate, and drives the second bevel gear 305 and the first threaded rod 304 to rotate together, so that the two moving blocks 306 move away from each other.

[0034] In addition, a sliding hole is opened on the left side of the moving block 306, and the moving block 306 is slidably connected to the outer surface of the fixed rod 308 through the sliding hole, thereby increasing the stability of the moving block 306 when moving. The slider 311 is slidably connected between the two fixed blocks 309, and the lower surface of the slider 311 is slidably connected to the upper surface of the lower mold 7, thereby increasing the stability of the slider 311 when moving.

[0035] In addition, two fixing plates are fixed on the front side of the inner cavity of the first shell 301, and a rotating hole is opened on the left side of the fixing plate. The first threaded rod 304 is rotatably connected to the inside of the rotating hole through a bearing, thereby increasing the stability of the first threaded rod 304 during rotation. Sliding rods are fixed on the opposite sides of the two fixing plates, and the moving block 306 is slidably connected to the outer surface of the sliding rod, thereby increasing the stability of the moving block 306 during movement.

[0036] In the core pulling mechanism 3 of this embodiment, the first motor 302 drives the first bevel gear 303 to rotate, and drives the second bevel gear 305 and the first threaded rod 304 to rotate together, so that the two moving blocks 306 move away from each other, and the moving block 306 drives the slider 311 and the side core 312 to move together through the connecting rod 310, so that the side core 312 is away from the workpiece, thereby facilitating the demolding of the workpiece.

[0037] See also Figure 3 In order to open and close the mold, the mold opening mechanism 4 in this embodiment includes a second motor 401 fixed to the left side of the inner cavity of the box body 5, the output shaft of the second motor 401 is fixed with a rotating rod 402, the outer surface of the rotating rod 402 is fixed with two third bevel gears 403, the outer surface of the third bevel gear 403 is meshed with a fourth bevel gear 404, the lower surface of the fourth bevel gear 404 is fixed with a second threaded rod 405, the second motor 401 drives the rotating rod 402 and the two third bevel gears 403 to rotate together, drives the fourth bevel gear 404 and the second threaded rod 405 to rotate, the outer surface of the second threaded rod 405 is threadedly connected with a rod sleeve 406, and the upper mold 8 is fixed to the lower surface of the two rod sleeves 406. When in use, the second threaded rod 405 rotates to drive the rod sleeve 406 and the upper mold 8 to move together.

[0038] Among them, the right side of the rotating rod 402 is rotatably connected to the right side of the inner cavity of the box body 5 through a bearing seat, which increases the stability of the rotating rod 402 when rotating. Slides are fixed on the opposite sides of the two rod sleeves 406, and the slides are slidably connected to the outer surface of the support rod 2 to increase the stability of the rod sleeves 406 when moving.

[0039] In the mold opening mechanism 4 of this embodiment, the second motor 401 drives the rotating rod 402 and the two third bevel gears 403 to rotate together, drives the fourth bevel gear 404 and the second threaded rod 405 to rotate, drives the rod sleeve 406 and the upper mold 8 to move together, and moves the upper mold 8 away from the lower mold 7, thereby facilitating the removal of the workpiece.

[0040] The working principle of the above embodiment is:

[0041] (1) When core pulling is required, the first motor 302 is turned on, and the first motor 302 drives the first bevel gear 303 to rotate, and the first bevel gear 303 drives the second bevel gear 305 and the first threaded rod 304 to rotate together. Since the two threads of the first threaded rod 304 are in opposite directions, when the first threaded rod 304 rotates, it will drive the two moving blocks 306 to move in opposite directions at the same time, and the moving blocks 306 will slide on the outer surface of the fixed rod 308, thereby increasing the stability of the moving blocks 306 when they move. When the moving blocks 306 move, they will drive the slider 311 and the side core 312 to move together through the connecting rod 310, so that the side core 312 is away from the workpiece, which is convenient for demolding the workpiece;

[0042] (2) When the mold needs to be opened, the second motor 401 is turned on. The second motor 401 drives the rotating rod 402 and the two third bevel gears 403 to rotate together. The third bevel gears 403 drive the fourth bevel gear 404 and the second threaded rod 405 to rotate together. The second threaded rod 405 rotates to drive the rod sleeve 406 to move. When the rod sleeve 406 moves, it drives the slide plate to slide on the outer surface of the support rod 2, thereby increasing the stability of the rod sleeve 406 when it moves. When the rod sleeve 406 moves, it drives the upper mold 8 to move together, so that the upper mold 8 is away from the lower mold 7, which is convenient for removing the workpiece.

[0043] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0044] Although the embodiments of the present application have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application.

Claims

1. A mold structure, comprising a bottom plate (1), characterized in that: Two bottom blocks (6) and four support rods (2) are fixed on the upper surface of the bottom plate (1); a box body (5) is fixed on the upper surface of the four support rods (2); a mold opening mechanism (4) is provided inside the box body (5); a lower mold (7) is fixed on the upper surface of the two bottom blocks (6); a core pulling mechanism (3) is provided on the lower mold (7); and an upper mold (8) is provided on the mold opening mechanism (4); The core pulling mechanism (3) comprises a second shell (307) fixed to the front end of the lower mold (7) and a first shell (301) fixed to the rear end of the lower mold (7); a driving assembly is provided inside the first shell (301); two moving blocks (306) are provided on the driving assembly; a fixing rod (308) is fixed between the left and right sides of the inner cavity of the second shell (307); two connecting rods (310) are fixed to the opposite sides of the two moving blocks (306); a slider (311) is fixed to the opposite sides of the left and right connecting rods (310); and a side core (312) is fixed to the opposite sides of the left and right sliders (311); the core pulling mechanism (3) further comprises a plurality of fixing blocks (309) fixed to the left and right sides of the upper surface of the lower mold (7).

2. A mold structure according to claim 1, characterized in that: The driving assembly comprises a first motor (302) fixed to the back side of the inner cavity of the first shell (301); a first bevel gear (303) is fixed to the output shaft of the first motor (302); a first threaded rod (304) is rotatably connected between the left and right sides of the inner cavity of the first shell (301) via a bearing seat; a second bevel gear (305) meshing with the first bevel gear (303) is fixed to the outer surface of the first threaded rod (304); and the two moving blocks (306) are threadedly connected to the outer surface of the first threaded rod (304).

3. A mold structure according to claim 2, characterized in that: A sliding hole is provided on the left side of the moving block (306), and the moving block (306) is slidably connected to the outer surface of the fixing rod (308) through the sliding hole.

4. A mold structure according to claim 3, characterized in that: The sliding block (311) is slidably connected between the two fixed blocks (309), and the lower surface of the sliding block (311) is slidably connected to the upper surface of the lower mold (7).

5. A mold structure according to claim 4, characterized in that: Two fixing plates are fixed on the front side of the inner cavity of the first shell (301), a rotating hole is opened on the left side of the fixing plate, and the first threaded rod (304) is rotatably connected to the inside of the rotating hole via a bearing.

6. A mold structure according to claim 1, characterized in that: The mold opening mechanism (4) comprises a second motor (401) fixed to the left side of the inner cavity of the box body (5); a rotating rod (402) is fixed to the output shaft of the second motor (401); two third bevel gears (403) are fixed to the outer surface of the rotating rod (402); a fourth bevel gear (404) is meshed with the outer surface of the third bevel gear (403); a second threaded rod (405) is fixed to the lower surface of the fourth bevel gear (404); and a rod sleeve (406) is threadedly connected to the outer surface of the second threaded rod (405).

7. A mold structure according to claim 6, characterized in that: The upper mold (8) is fixed to the lower surfaces of the two rod sleeves (406), and the right side of the rotating rod (402) is rotatably connected to the right side of the inner cavity of the box body (5) through a bearing seat.

8. A mold structure according to claim 6, characterized in that: A slide plate is fixed on the opposite sides of the two rod sleeves (406), and the slide plate is slidably connected to the outer surface of the support rod (2).

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