Tandem type sandbox structure

Abstract

The utility model discloses a tandem type sandbox structure which comprises at least two sandboxes which are connected in series and stacked together, box lugs are arranged on the two sides of each sandbox, lug holes are formed in the centers of the box lugs, and the diameters of the lug holes of the box lugs on the sandboxes are sequentially reduced from bottom to top. The box lugs are provided with lug holes, stepped pull rods are arranged in the lug holes to connect the box lugs in series, each stepped pull rod comprises a plurality of pull rod units with different diameters, the diameters of the pull rod units are sequentially reduced from bottom to top, and different distances exist between the upper surfaces of the pull rod units and the lower surfaces of the box lugs at the corresponding positions. According to the tandem type sandbox structure, through cooperation of the step pull rod and the box lugs, when the lifting handle is pulled upwards, the step pull rod can sequentially drive the multiple sandboxes to move upwards through the box lugs for demolding, all the sandboxes are sequentially demolded, the pulling force for pulling the pull rod is greatly reduced, demolding is facilitated, the demolding process is more stable and unified, and sand molds are effectively prevented from being damaged.

Description

TECHNICAL FIELD

[0001] The utility model relates to sand type manufacturing technology field, and specifically relates to a series connection type sand box structure. BACKGROUND

[0002] In sand type manufacturing, generally divided into sand shooting, compaction, demolding several steps. If the sand type height is relatively high, needs to use multiple sand boxes to manufacture the sand type. In the demolding process, the traditional way is to demold each sand box separately, which needs to consume a lot of manpower and time, and the operation process is tedious. Moreover, due to the separate operation of each sand box, it is difficult to ensure the consistency of demolding, which is easy to cause the damage of the sand type and affect the quality of the sand type. UTILITY MODEL CONTENTS

[0003] The utility model aims at overcoming the above problems or at least partially solving the above problems, and provides a series connection type sand box structure.

[0004] To achieve the above object, the utility model adopts the following technical scheme: a series connection type sand box structure, including not less than two sand boxes stacked together in series, the both sides of the sand box are provided with box ears, the center of the box ear is provided with an ear hole, the diameter of the ear hole of the box ear on the sand box from bottom to top is sequentially reduced, a stepped pull rod is arranged in the ear hole to connect the box ears together, the stepped pull rod includes a plurality of pull rod units with different diameters, and the diameter of each pull rod unit is sequentially reduced from bottom to top, the distance between the upper surface of each pull rod unit from bottom to top and the lower surface of the corresponding box ear is sequentially reduced, by pulling the stepped pull rod upwards, the box ear can sequentially drive the multiple sand boxes to move upwards for demolding.

[0005] In a preferred embodiment, an outer edge groove is formed in the top of the outer wall of the sand box, and an inner edge groove is formed in the bottom of the inner wall of the sand box, and the sand box at the outer edge groove can be inserted into the inner edge groove of the adjacent sand box.

[0006] In a preferred embodiment, a threaded groove and a threaded stud are arranged between each adjacent pull rod unit, the threaded groove is located at the end of one pull rod unit, and the threaded stud is located at the end of the other pull rod unit.

[0007] In a preferred embodiment, the top of the pull rod unit at the top of the stepped pull rod is provided with a handle.

[0008] In a preferred embodiment, the box ears and the sandboxes are connected in a split type, the sandboxes are integrally formed with connecting sleeves on both sides, the connecting sleeves are provided with openings penetrating from top to bottom in the middle, a plurality of box ear sleeves are arranged on each pull rod unit of the ladder pull rod and inserted into the inner cavities of the connecting sleeves, the ladder pull rod penetrates out of the connecting sleeve from the opening, the inner cavity height of the connecting sleeve on each sandboxes decreases from bottom to top, and the distance between the upper surface of each box ear and the upper surface of the inner cavity of the connecting sleeve decreases from bottom to top.

[0009] In a preferred embodiment, the inner wall of the connecting sleeve is provided with a rubber pad.

[0010] In a preferred embodiment, the pull rod unit and the ear hole are both arranged in a rectangular shape.

[0011] Compared with the prior art, the serial sand box structure is provided, by the cooperation of the ladder pull rod and the box ear, when the handle is pulled upward, the ladder pull rod can drive multiple sandboxes to move upward for demolding through the box ear, compared with the traditional demolding operation of each sand box, the serial sand box structure, each sand box is demolded in turn, greatly reduces the pulling force of the pull rod, facilitates demolding, improves the efficiency of demolding operation, and makes the demolding process more stable and unified, effectively prevents the damage of the sand type, and improves the quality of the sand type. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a three-dimensional structure schematic diagram of the utility model;

[0013] Figure 2 It is a front view structure schematic diagram of the utility model;

[0014] Figure 3 It is a three-dimensional structure schematic diagram of the sand box;

[0015] Figure 4 It is an exploded view of the ladder pull rod;

[0016] Figure 5 It is a three-dimensional structure schematic diagram of another embodiment of the utility model.

[0017] In the drawing: 100, sand box; 101, outer groove; 102, inner groove; 103, connecting sleeve; 104, opening; 200, box ear; 201, ear hole; 300, ladder pull rod; 301, pull rod unit; 302, threaded groove; 303, stud; 304, handle. DETAILED DESCRIPTION

[0018] The utility model will be further described in detail below in combination with the drawings.

[0019] The embodiment is only an interpretation of the utility model, and is not a limitation of the utility model, and a person skilled in the art can make creative contributions to the modification of the embodiment according to the needs after reading the description, as long as the modification is within the scope of the claims of the utility model and is protected by the patent law.

[0020] The utility model relates to a series connection type sandbox structure, solve the prior art technical problem, the general idea is as follows:

[0021] Embodiment 1

[0022] Reference Figures 1-4 For the first embodiment of the utility model, the embodiment provides a series connection type sandbox structure, by the cooperation of the stepped pull rod 300 and the box lug 200, a plurality of sandboxes 100 can be pulled to move together for demolding.

[0023] Specifically, a series connection type sandbox structure comprises not less than two sandboxes 100 stacked together in series, the two sides of the sandbox 100 are provided with box lug 200, the center of the box lug 200 is provided with lug hole 201, the diameter of the lug hole 201 of the box lug 200 on the sandbox 100 from bottom to top is sequentially reduced, the lug hole 201 is provided with stepped pull rod 300 to connect the plurality of box lug 200 together, the stepped pull rod 300 comprises a plurality of pull rod units 301 with different diameters, and the diameter of each pull rod unit 301 from bottom to top is sequentially reduced, the distance between the upper surface of each pull rod unit 301 from bottom to top and the lower surface of the corresponding position of the box lug 200 is sequentially reduced, by pulling the stepped pull rod 300 upwards, the plurality of sandboxes 100 can be sequentially driven to move upwards for demolding by the box lug 200.

[0024] Further, the outer wall top of the sandbox 100 is provided with an outer groove 101, and the inner wall bottom of the sandbox 100 is provided with an inner groove 102, the sandbox 100 at the outer groove 101 can be inserted into the inner groove 102 of the adjacent sandbox 100, so as to facilitate the stacking of the two adjacent sandboxes 100.

[0025] Further, a threaded groove 302 and a threaded stud 303 threaded in the threaded groove 302 are arranged between each adjacent pull rod unit 301, the threaded groove 302 is located at the end of one side pull rod unit 301, and the threaded stud 303 is located at the end of the other side pull rod unit 301, so as to facilitate the disassembly of each pull rod unit 301, and a proper number of pull rod units 301 can be used according to the number of stacked sandboxes 100.

[0026] Further, the top of the pull rod unit 301 at the top of the stepped pull rod 300 is provided with a handle 304 for lifting the stepped pull rod 300.

[0027] In summary, by the cooperation of the stepped pull rod 300 and the box ear 200, when the handle 304 is pulled upward, the stepped pull rod 300 can be driven to move upward, and the corresponding pull rod unit 301 can drive the first sandbox to move upward, and after the first sandbox moves a certain distance, the second sandbox is driven to move upward by the corresponding pull rod unit, and after the second sandbox moves a certain distance, the third sandbox is driven to move upward by the corresponding pull rod unit, and so on, the stepped pull rod 300 drives multiple sandboxes 100 to move in sequence through the box ear 200 to demold, which greatly reduces the pulling force of the pull rod and facilitates demolding.

[0028] Embodiment 2

[0029] Referring to Figure 5 As a second embodiment of the utility model, which is based on embodiment 1, the difference is that the box ear 200 and the sandbox 100 are matched in a split type, and are connected through the connecting sleeve 103, which can realize the disassembly between the box ear 200 and the stepped pull rod 300 and the sandbox 100.

[0030] Specifically, the box ear 200 and the sandbox 100 are matched in a split type, the connecting sleeve 103 is integrally formed on both sides of the sandbox 100, the middle part of the connecting sleeve 103 is provided with an opening 104 penetrating upward and downward, the box ear 200 is sleeved on each pull rod unit 301 of the stepped pull rod 300 and is inserted into the inner cavity of the connecting sleeve 103, the stepped pull rod 300 passes out of the connecting sleeve 103 from the opening 104, the inner cavity height of the connecting sleeve 103 on each sandbox 100 gradually decreases from bottom to top, and the distance between the upper surface of each box ear 200 and the inner cavity upper surface of the connecting sleeve 103 gradually decreases from bottom to top.

[0031] Further, the inner wall of the connecting sleeve 103 is provided with a rubber pad, which increases the friction between the box ear 200 and the connecting sleeve 103, and improves the stability between the box ear 200 and the connecting rod 103 during upward demolding together.

[0032] Further, the pull rod unit 301 and the ear hole 201 are both set as a rectangular shape matched with each other, the rectangular design can make the box ear 200 unable to rotate on the pull rod unit 301, and only move up and down, so as to facilitate the multiple box ears 200 on the stepped pull rod 300 to be inserted into the corresponding connecting sleeve 103 together.

[0033] In summary, the box ear 200 and the sandbox 100 are matched in a split type and connected through the connecting sleeve 103, which can realize the disassembly between the box ear 200 and the stepped pull rod 300 and the sandbox 100, and when the sandboxes 100 are stacked, the stepped pull rod 300 does not need to be installed together in advance, and can be installed during demolding, so that when facing multiple stacked sandboxes, the use quantity of the stepped pull rod 300 can be greatly reduced, and the cost is reduced.

[0034] The above description of the embodiments is to facilitate the understanding and use of the present application by those skilled in the art, and those skilled in the art can easily make various modifications to the embodiments, and apply the general principles described herein to other embodiments without creative labor, therefore, the present application is not limited to the above embodiments, and the improvements and modifications made by those skilled in the art without departing from the scope of the present application should be within the protection scope of the present application.

Claims

1. A tandem sandbox structure, characterized by: The utility model relates to a sand box, including not less than two sand boxes (100) that are stacked in series, both sides of sand box (100) are provided with box lug (200), the center of box lug (200) is provided with lug hole (201), the diameter of lug hole (201) on the box lug (200) of sand box (100) from bottom to top is reduced gradually, the lug hole (201) is provided with ladder pull rod (300) and is connected in series with multiple box lug (200), ladder pull rod (300) includes several pull rod units (301) of different diameters, and the diameter of each pull rod unit (301) is reduced gradually from bottom to top, the distance between the upper surface of each pull rod unit (301) from bottom to top and the lower surface of the box lug (200) of the corresponding position is reduced gradually, by pulling ladder pull rod (300) upwards, multiple sand boxes (100) can be moved upwards and demoulded by the box lug (200) in succession.

2. A tandem sandbox structure according to claim 1, characterized in that: The outer wall top of the sand box (100) is provided with an outer edge groove (101), and the inner wall bottom of the sand box (100) is provided with an inner edge groove (102), and the sand box (100) at the outer edge groove (101) can be inserted into the inner edge groove (102) of the adjacent sand box (100).

3. A tandem sandbox structure according to claim 2, characterized in that: Threaded grooves (302) and studs (303) screwed in the threaded grooves (302) are arranged between each adjacent pull rod unit (301).

4. A tandem sandbox structure according to claim 3, characterized in that: The top of the topmost pull rod unit (301) in the ladder pull rod (300) is provided with a handle (304).

5. A tandem sandbox structure according to any one of claims 1-4, characterized in that: The box lug (200) and the sand box (100) are matched in a split type, and the two sides of the sand box (100) are integrally provided with a connecting sleeve (103), the middle part of the connecting sleeve (103) is provided with an opening (104) penetrating upward and downward, a plurality of box lugs (200) are sleeved on each pull rod unit (301) of the ladder pull rod (300) and inserted into the inner cavity of the connecting sleeve (103), the ladder pull rod (300) penetrates out of the connecting sleeve (103) from the opening (104), the inner cavity height of the connecting sleeve (103) on each sand box (100) is reduced gradually from bottom to top, and the distance between the upper surface of each box lug (200) from bottom to top and the upper surface of the inner cavity of the connecting sleeve (103) is reduced gradually.

6. A tandem sandbox structure according to claim 5, wherein: The inner wall of the connecting sleeve (103) is provided with a rubber pad.

7. A tandem sandbox structure according to claim 6, characterized in that: The pull rod unit (301) and the lug hole (201) are both rectangular and matched with each other.

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