Core box locking device

Abstract

The utility model discloses a core box locking device which comprises a lower core box and an upper core box, and the lower core box and the upper core box are connected through a plurality of locking structures. Each locking structure comprises an outer sleeve, and each outer sleeve comprises a cylindrical sleeve part and a convex strip sleeve part; a user inserts an outer sleeve on a lower core box and an upper core box, an upper end limiting ring is attached to the upper core box, a rotating button is rotated to enable a locking block to rotate into a special-shaped groove from a notch, then the rotating button is pressed downwards to enable one end of a limiting frame to be inserted in a protruding strip sleeve part, a movable column is prevented from rotating, and the movable column is locked. At the moment, under the vertical limitation of the locking block and the upper end limiting ring, the lower core box and the upper core box are locked, and when the lower core box and the upper core box are disassembled, the rotating button is pulled to enable the limiting frame to be separated from the protruding strip sleeve part, then the rotating button is rotated to enable the locking block to be retracted into the protruding strip sleeve part, use is convenient, locking and disassembling are rapid, and production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of core box locking, in particular to a core box locking device. Background Art

[0002] In the production of casting cores, split core boxes usually use nuts that are screwed in and out on the screws to achieve the tightening and disassembly of the upper and lower core boxes. When the upper and lower core boxes need to be fully opened, the nuts on the screws must be completely screwed out. The operation process is cumbersome, time-consuming, and reduces production efficiency. In addition, if the threads are damaged during locking, they cannot be used, affecting the normal locking work.

[0003] There may already be technical means to solve the above problems in the prior art, but this case intends to provide an alternative or replacement technical solution. Utility Model Content

[0004] In order to solve the problems raised in the background technology, the utility model is implemented through the following technical solutions: a core box locking device, comprising a lower core box and an upper core box, wherein the lower core box and the upper core box are connected through a plurality of locking structures;

[0005] Several of the locking structures include an outer sleeve, which includes a cylindrical sleeve portion and a convex sleeve portion, an upper end limit ring is installed on the outer wall of the cylindrical sleeve portion, the cylindrical sleeve portion and the convex sleeve portion are an integrated structure, the outer sleeve is a hollow structure closed at one end, a notch is opened on the outer sleeve, a moving column is movably inserted on the outer sleeve, the moving column matches the inner wall of the cylindrical sleeve portion, a locking block corresponding to the notch is installed on the outer wall of the moving column, the locking block matches the inner wall of the convex sleeve portion, and a self-locking component is movably installed on one end of the moving column.

[0006] Preferably, the self-locking component includes a cross-shaped moving block, which is movably inserted on the upper wall of the moving column, a knob is installed at one end of the cross-shaped moving block, a limit frame is installed on the outer wall of the knob, and one end of the limit frame matches the convex strip sleeve.

[0007] Preferably, the outer sleeve movably passes through the upper core box, and the outer sleeve movably inserts into the lower core box, and a special-shaped groove is provided inside the lower core box, and the special-shaped groove matches the locking block.

[0008] Preferably, the height dimension of the locking block is not greater than the height dimension of the notch.

[0009] Preferably, an amplifying plate is installed at one end of the cross-shaped moving block, and an amplifying groove is opened on the moving column, and the amplifying groove and the amplifying plate match each other.

[0010] Preferably, the movable column and the locking block are an integral structure.

[0011] Beneficial Effects

[0012] The utility model provides a core box locking device, which has the following beneficial effects compared with the prior art: the user inserts the outer sleeve into the lower core box and the upper core box, the upper limit ring fits the upper core box, and the knob is turned to make the locking block rotate from the notch to the special-shaped groove, and then the knob is pressed down to make one end of the limit frame inserted in the convex strip sleeve to prevent the movable column from rotating. At this time, the lower core box and the upper core box are locked under the upper and lower restrictions of the locking block and the upper limit ring. When disassembling the lower core box and the upper core box, the knob is pulled to make the limit frame detach from the convex strip sleeve, and then the knob is turned to retract the locking block into the convex strip sleeve. It is easy to use, fast to lock and disassemble, and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The utility model is a schematic diagram of the partial three-dimensional structure of the outer sleeve of a core box locking device.

[0014] Figure 2 It is a partial three-dimensional structural schematic diagram of the moving column part of a core box locking device of the utility model.

[0015] Figure 3 It is a schematic diagram of the main cross-sectional structure of a core box locking device of the utility model in a locked state.

[0016] Figure 4 The utility model is a side cross-sectional structural schematic diagram of a core box locking device in a disassembled state.

[0017] Figure 5 The utility model is a core box locking device Figure 3 Schematic diagram of the cross-sectional structure viewed from above at point A in the middle.

[0018] In the figure: 1, lower core box, 2, upper core box, 3, outer sleeve, 301, cylindrical sleeve, 302, convex sleeve, 4, notch, 5, moving column, 6, locking block, 7, cross-shaped moving block, 8, knob, 9, limit frame, 10, special-shaped groove, 11, magnifying plate, 12, magnifying groove, 13, upper end limit ring. DETAILED DESCRIPTION

[0019] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

[0020] Example: A core box locking device, please refer to Figure 1-3 In order to solve the problem of low efficiency in fastening and disassembling the lower core box 1 and the upper core box 2, this technical solution is designed. The detailed technical solution is as follows;

[0021] The device components include a lower core box 1 and an upper core box 2, and the lower core box 1 and the upper core box 2 are connected by a plurality of locking structures;

[0022] Specifically, several locking structures include an outer sleeve 3, which includes a cylindrical sleeve portion 301 and a convex sleeve portion 302. An upper end limit ring 13 is installed on the outer wall of the cylindrical sleeve portion 301. The cylindrical sleeve portion 301 and the convex sleeve portion 302 are an integrated structure. The outer sleeve 3 is a hollow structure with one end closed. A notch 4 is provided on the outer sleeve 3. A moving column 5 is movably inserted on the outer sleeve 3. The moving column 5 matches the inner wall of the cylindrical sleeve portion 301. A locking block 6 corresponding to the notch 4 is installed on the outer wall of the moving column 5. The locking block 6 matches the inner wall of the convex sleeve portion 302. A self-locking component is movably installed on one end of the moving column 5.

[0023] More specifically, the self-locking assembly includes a cross-shaped moving block 7, which is movably inserted on the upper wall of the moving column 5, and a knob 8 is installed at one end of the cross-shaped moving block 7. A limit frame 9 is installed on the outer wall of the knob 8, and one end of the limit frame 9 matches the convex strip sleeve 302;

[0024] More specifically, the outer sleeve 3 movably penetrates the upper core box 2, and the outer sleeve 3 is movably inserted into the lower core box 1. A special-shaped groove 10 is provided inside the lower core box 1, and the special-shaped groove 10 matches the locking block 6.

[0025] It should be noted that the user inserts the outer sleeve 3 into the lower core box 1 and the upper core box 2, and the locking block 6 is located in the convex sleeve portion 302 until one end of the outer sleeve 3 fits the lower core box 1 and the upper limit ring 13 fits the upper core box 2. Then the user turns the knob 8, and the moving column 5 is driven to rotate under the connection of the cross-shaped moving block 7, so that the locking block 6 is rotated from the notch 4 to the special-shaped groove 10, until the locking block 6 fits the side wall of the special-shaped groove 10 of the lower core box 1, and then the user presses the knob 8. , so that the cross-shaped moving block 7 is lowered, and one end of the limiting frame 9 is inserted into the convex strip sleeve part 302 to prevent the moving column 5 from rotating. At this time, the locking structure realizes the locking of the lower core box 1 and the upper core box 2 through the upper and lower restrictions of the locking block 6 and the upper end limiting ring 13. When disassembling the lower core box 1 and the upper core box 2, pull the knob 8 to make the limiting frame 9 separate from the convex strip sleeve part 302, and then turn the knob 8 to retract the locking block 6 into the convex strip sleeve part 302. It is easy to use, fast locking and disassembly, and improves production efficiency;

[0026] As a preferred embodiment, further, the height dimension of the locking block 6 is not greater than the height dimension of the notch 4, so that the locking block 6 can move smoothly in the notch 4;

[0027] As a preferred embodiment, further, an amplifying plate 11 is installed at one end of the cross-shaped moving block 7, and an amplifying groove 12 is provided on the moving column 5, and the amplifying groove 12 matches the amplifying plate 11 to prevent the cross-shaped moving block 7 from falling off;

[0028] Preferably, further, the movable column 5 and the locking block 6 are an integral structure.

[0029] Although embodiments of the present invention 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 invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A core box locking device, comprising a lower core box (1) and an upper core box (2), characterized in that: The lower core box (1) and the upper core box (2) are connected via a plurality of locking structures; Several locking structures include an outer sleeve (3), the outer sleeve (3) including a cylindrical sleeve portion (301) and a convex strip sleeve portion (302), an upper end limit ring (13) is installed on the outer wall surface of the cylindrical sleeve portion (301), the cylindrical sleeve portion (301) and the convex strip sleeve portion (302) are an integral structure, the outer sleeve (3) is a hollow structure with one end closed, a notch (4) is provided on the outer sleeve (3), a movable column (5) is movably inserted on the outer sleeve (3), the movable column (5) matches the inner wall surface of the cylindrical sleeve portion (301), a locking block (6) corresponding to the notch (4) is installed on the outer wall surface of the movable column (5), the locking block (6) matches the inner wall surface of the convex strip sleeve portion (302), and a self-locking component is movably installed on one end of the movable column (5).

2. A core box locking device according to claim 1, characterized in that: The self-locking component comprises a cross-shaped moving block (7), the cross-shaped moving block (7) is movably inserted on the upper wall surface of the moving column (5), a knob (8) is installed at one end of the cross-shaped moving block (7), a limit frame (9) is installed on the outer wall surface of the knob (8), and one end of the limit frame (9) matches the convex strip sleeve part (302).

3. A core box locking device according to claim 1, characterized in that: The outer sleeve (3) is movably inserted into the upper core box (2), and the outer sleeve (3) is movably inserted into the lower core box (1). A special-shaped groove (10) is provided inside the lower core box (1), and the special-shaped groove (10) matches the locking block (6).

4. A core box locking device according to claim 1, characterized in that: The height dimension of the locking block (6) is not greater than the height dimension of the notch (4).

5. A core box locking device according to claim 2, characterized in that: An amplifying plate (11) is installed at one end of the cross-shaped moving block (7), and an amplifying groove (12) is provided on the moving column (5), and the amplifying groove (12) and the amplifying plate (11) match each other.

6. A core box locking device according to claim 1, characterized in that: The movable column (5) and the locking block (6) are an integrated structure.

Images