Cold core box mold with release agent slow release structure

Abstract

The utility model discloses a cold core box mold with a release agent slow release structure, which comprises a base, the top of the base is movably connected with a lower mold base and an upper mold base respectively, and the top of the upper mold base is provided with a release agent spraying assembly. The first rack, the second rack and the gear are matched to drive the upper mold base and the lower mold base to move linearly in the opposite directions of the guide columns until the upper mold base and the lower mold base are closed, core making sand is injected into the interior from the feeding pipe through an external sand shooting machine to be formed, the valve is closed by rotating the knob, and then a fogging hardening agent is conveyed into the interior through an external air pump to enable a sand core to be shaped. A driving motor is reversely started to separate the upper die base from the lower die base, the material jacking table pushes the shaped sand core out of the lower die base in the descending process of the lower die base, and when the upper die base and the lower die base do opposite linear motion, a first pressing block and a second pressing block extrude an elastic air bag correspondingly; and the release agent liquid in the water tank is extruded to the nozzle and sprayed to the bottom of the upper mold base and the top of the lower mold base.

Description

TECHNICAL FIELD

[0001] The utility model relates to cold -box mould technical field, concretely is a cold -box mould with release agent slow -release structure. BACKGROUND

[0002] The cold -box mould is mainly used for manufacturing hollow -shaped parts, for example, automobile engine cylinder, steering gear, shock absorber, water pump impeller etc., generally mixes the core sand and then carries out core shooting to the cold -box mould through the core shooter, and then the sand core is shaped by the gas mist hardener, the release agent is a functional material between the mould and the finished product, the release agent has chemical resistance and is not dissolved when contacting with the chemical composition of different resins, the release agent also has heat and stress resistance and is not easy to decompose or wear, the release agent is adhered to the mould and is not transferred to the processed parts, and does not hinder the paint spraying or other secondary processing operation, due to the rapid development of injection molding, extrusion, calendering, mould pressing, laminating and other processes, the use amount of the release agent is greatly improved.

[0003] The existing cold -box mould is inconvenient to take out, the sand core is clamped in the mould after shaping, manual mould overturning is needed to take out the material, and the process is time -consuming and laborious, the processing efficiency is reduced to a certain extent, and the sand core is adhered to the mould when taking out, so that the sand core is easily damaged and the processing effect is reduced. SUMMARY

[0004] This section aims to outline some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the utility model name to avoid obscuring the purpose of this section, the abstract of the specification and the utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0005] In view of the above and / or the problems existing in the prior art cold -box mould with release agent slow -release structure, the utility model is proposed.

[0006] Therefore, the purpose of this utility model is to provide a cold core box mold with a release agent slow-release structure. During use, the drive motor rotates the gears, and the first and second racks, in conjunction with the gears, drive the upper and lower mold bases to move linearly in opposite directions along the guide pillars until the upper and lower mold bases close. Core-forming sand is injected into the interior through the feed pipe by an external sand-shooting machine for molding. Rotating the knob closes the valve, and an external air pump delivers a fogging hardener to the interior to solidify the sand core. The drive motor is then reversed to separate the upper and lower mold bases. During the descent of the lower mold base... The top platen pushes the shaped sand core out of the lower mold base. When the upper and lower mold bases move in opposite directions in a straight line, the first and second pressure blocks squeeze the elastic air bladders respectively, squeezing the release agent liquid in the water tank to the nozzle and spraying it onto the bottom of the upper mold base and the top of the lower mold base. This solves the problem that most existing cold core box molds are inconvenient to remove when removing the mold. After the sand core is formed, it gets stuck in the mold and requires manual flipping of the mold to remove the material, which is time-consuming and laborious, and reduces the processing efficiency to a certain extent. In addition, the sand core sticks to the mold when removing the mold, which can easily damage the sand core and reduce the processing effect.

[0007] To solve the above-mentioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution:

[0008] A cold box mold with a release agent slow-release structure includes a base, a lower mold base and an upper mold base movably connected to the top of the base, a release agent spraying assembly on the top of the upper mold base, a first fixing frame fixedly connected to one side of the base, a drive motor fixedly connected to one side of the first fixing frame, a gear fixedly connected to the power output end of the drive motor through the first fixing frame, a first rack fixedly connected to the bottom of one side of the upper mold base, and a second rack fixedly connected to the top of one side of the lower mold base. Both the first rack and the second rack mesh with the gear. The lower mold base contains... Each part is equipped with a feed inlet and an air inlet. A feed pipe is fixedly connected to one side of the feed inlet, and the input end of the feed pipe is connected to an external sand shooting machine. A valve is installed in the middle of the feed pipe, and a knob is installed on the top of the valve. An air inlet is fixedly connected to one side of the air inlet, and the input end of the air inlet is connected to an external air pump. A connecting rod is fixedly connected to the top of the base, and one end of the connecting rod passes through the bottom of the lower mold base and is fixedly connected to a top material platform. A groove is provided on the bottom inner side of the lower mold base. Both the upper mold base and the lower mold base are provided with multiple ventilation holes, and the diameter of the ventilation holes is smaller than the diameter of the sand and gravel.

[0009] As a preferred embodiment of the cold core box mold with a release agent slow-release structure described in this utility model, a first relief groove is provided on one side of the lower mold base, and a second relief groove is provided on one side of the upper mold base. The first relief groove is located at the top of the first rack, and the second relief groove is located at the top of the second rack.

[0010] As a preferred embodiment of the cold core box mold with a release agent slow-release structure described in this utility model, guide pillars are fixedly connected to the four corners of the top of the base, guide holes are provided at the four corners of the lower mold base, the lower mold base is movably connected to the guide pillars, and a limit block is provided at the top of the guide pillars.

[0011] As a preferred embodiment of the cold core box mold with a release agent slow-release structure described in this utility model, a spring is movably connected to the outer side of the guide post, a ball bearing guide sleeve is directly movably connected to the top of the spring and the bottom of the limiting block, and a second guide sleeve is fixedly connected to each of the four corners of the upper mold base, with the outer side of the ball bearing guide sleeve and the inner side of the second guide sleeve being movably connected.

[0012] As a preferred embodiment of the cold core box mold with a release agent slow-release structure described in this utility model, the release agent spraying assembly includes a water tank containing release agent liquid. A water pipe is fixedly connected to the output end of the water tank, an elastic airbag is fixedly connected to the output end of the water pipe, and a flexible hose is fixedly connected to the output end of the elastic airbag. The flexible hose is provided with multiple output ends.

[0013] As a preferred embodiment of the cold core box mold with a release agent slow-release structure described in this utility model, a first pressure block is fixedly connected to one side of the lower mold base, a second pressure block is fixedly connected to one side of the upper mold base, a first water distribution frame and a second water distribution frame are fixedly connected to the outer side of the lower mold base and the outer side of the upper mold base, respectively, and a hollow layer is provided inside the first water distribution frame and the second water distribution frame. Multiple output ends of the hose are fixedly connected to the input ends of the first water distribution frame and the second water distribution frame, respectively, and multiple nozzles are fixedly connected to one side of the first water distribution frame and the second water distribution frame.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: Under the action of the drive motor, the gear rotates, and through the cooperation of the first rack, the second rack and the gear, the upper mold base and the lower mold base move in opposite directions along the guide post until the upper mold base and the lower mold base are closed. The core-making sand is injected into the interior through the feed pipe by the external sand shooting machine for molding. The knob is rotated to close the valve, and then the fogging hardener is delivered to the interior by the external air pump to fix the sand core. The drive motor is started in reverse to separate the upper mold base and the lower mold base. During the descent of the lower mold base, the top platen fixes the shaped core. The sand core is pushed out of the lower mold base. When the upper and lower mold bases move in opposite linear directions, the first and second pressure blocks squeeze the elastic air bladders respectively, squeezing the release agent liquid in the water tank to the nozzle and spraying it onto the bottom of the upper mold base and the top of the lower mold base. This solves the problem that most existing cold core box molds are inconvenient to remove when removing the mold. After the sand core is formed, it gets stuck in the mold and requires manual flipping of the mold to remove the material, which is time-consuming and laborious, and reduces the processing efficiency to a certain extent. In addition, the sand core sticks to the mold when removing the mold, which can easily damage the sand core and reduce the processing effect. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0016] Figure 1 This is a schematic diagram of the overall structure of a cold core box mold with a release agent slow-release structure according to the present invention.

[0017] Figure 2 This is a rear view of the overall structure of a cold core box mold with a release agent slow-release structure according to this utility model.

[0018] Figure 3 This is a schematic diagram of the base structure of a cold core box mold with a release agent slow-release structure according to the present invention.

[0019] Figure 4 This is a schematic diagram of the lower mold base structure of a cold core box mold with a release agent slow-release structure according to the present invention.

[0020] Figure 5 This is a schematic diagram of the upper mold base structure of a cold core box mold with a release agent slow-release structure according to the present invention.

[0021] Figure 6 This is a schematic diagram of the first water distribution frame structure of a cold core box mold with a release agent slow-release structure according to the present invention. Detailed Implementation

[0022] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0023] Example 1

[0024] Please see Figures 1-5This utility model provides a cold box mold with a release agent slow-release structure, including a base 1, a lower mold base 2 and an upper mold base 3 movably connected to the top of the base 1, a release agent spraying assembly on the top of the upper mold base 3, a first fixing frame 8 fixedly connected to one side of the base 1, a drive motor 9 fixedly connected to one side of the first fixing frame 8, a gear 10 fixedly connected to the power output end of the drive motor 9 through the first fixing frame 8, a first rack 29 fixedly connected to the bottom of one side of the upper mold base 3, and a second rack 24 fixedly connected to the top of one side of the lower mold base 2. Both the first rack 29 and the second rack 24 mesh with the gear 10. The interior of the base 1 is provided with a feed inlet 19 and an air inlet. A feed pipe 20 is fixedly connected to one side of the feed inlet 19. The input end of the feed pipe 20 is connected to an external sand shooting machine. A valve 21 is provided in the middle of the feed pipe 20. A knob 22 is provided on the top of the valve 21. An air inlet pipe 23 is fixedly connected to one side of the air inlet. The input end of the air inlet pipe 23 is connected to an external air pump. A connecting rod 15 is fixedly connected to the top of the base 1. One end of the connecting rod 15 passes through the bottom of the lower mold base 2 and is fixedly connected to a top material platform 16. A groove 17 is provided on the bottom inner side of the lower mold base 2. Both the upper mold base 3 and the lower mold base 2 are provided with multiple ventilation holes. The diameter of the ventilation holes is smaller than the diameter of the sand and gravel.

[0025] The lower mold base 2 has a first clearance groove 25 on one side and the upper mold base 3 has a second clearance groove 28 on one side. The first clearance groove 25 is located at the top of the first rack 29 and the second clearance groove 28 is located at the top of the second rack 24.

[0026] The base 1 has guide pillars 11 fixedly connected to the four corners of the top, and the lower mold base 2 has guide holes 18 at the four corners. The lower mold base 2 is movably connected to the guide pillars 11, and the top of the guide pillars 11 is provided with limit blocks 13.

[0027] A spring 12 is movably connected to the outside of the guide post 11. The top of the spring 12 is directly movably connected to the bottom of the limit block 13 by a ball bearing guide sleeve 14. The four corners of the upper mold base 3 are fixedly connected to the second guide sleeve 30. The outside of the ball bearing guide sleeve 14 is movably connected to the inside of the second guide sleeve 30.

[0028] Specifically, the drive motor 9 drives the gear 10 to rotate. Through the cooperation of the first rack 29, the second rack 24 and the gear 10, the upper mold base 3 and the lower mold base 2 move in opposite directions along the guide post 11 until the upper mold base 3 and the lower mold base 2 are closed. The core-making sand is injected into the interior through the feed pipe 20 by the external sand shooting machine for molding. The knob 22 is rotated to close the valve 21. Then, the fogging hardener is delivered to the interior by the external air pump to fix the sand core. The drive motor 9 is started in reverse to separate the upper mold base 3 and the lower mold base 2. During the descent of the lower mold base 2, the top material platform 16 pushes the fixed sand core out of the lower mold base 2. This solves the problem that most existing cold core box molds are inconvenient to remove when removing the mold. After the sand core is formed, it is stuck in the mold and requires manual flipping of the mold to remove the material, which is time-consuming and laborious and reduces the processing efficiency to a certain extent. The ball guide sleeve 14 reduces the friction to a certain extent and slows down the wear caused by lifting.

[0029] Example 2

[0030] Please see Figure 3 and Figures 4-6 The mold release agent spraying assembly includes a water tank 6 containing mold release agent liquid. A water pipe 7 is fixedly connected to the output end of the water tank 6. An elastic airbag 31 is fixedly connected to the output end of the water pipe 7. A hose 32 is fixedly connected to the output end of the elastic airbag 31. The hose 32 has multiple output ends.

[0031] A first pressure block 26 is fixedly connected to one side of the lower mold base 2, and a second pressure block 27 is fixedly connected to one side of the upper mold base 3. A first water distribution frame 4 and a second water distribution frame 5 are fixedly connected to the outer side of the lower mold base 2 and the outer side of the upper mold base 3, respectively. A hollow layer is provided inside the first water distribution frame 4 and the second water distribution frame 5. Multiple output ends of the hose 32 are fixedly connected to the input ends of the first water distribution frame 4 and the second water distribution frame 5, respectively. Multiple nozzles 33 are fixedly connected to one side of the first water distribution frame 4 and the second water distribution frame 5.

[0032] Specifically, when the upper mold base 3 and the lower mold base 2 move in opposite directions, the first pressure block 26 and the second pressure block 27 respectively squeeze the elastic air bag 31, squeezing the release agent liquid in the water tank 6 to the nozzle 33 and spraying it to the bottom of the upper mold base 3 and the top of the lower mold base 2. This solves the problem that the sand core sticks to the mold during demolding, which easily damages the sand core and reduces the processing effect.

[0033] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A cold box mold with a release agent slow-release structure, characterized in that, The system includes a base (1), on which a lower mold base (2) and an upper mold base (3) are movably connected respectively. A release agent spraying assembly is provided on the top of the upper mold base (3). A first fixing frame (8) is fixedly connected to one side of the base (1), and a drive motor (9) is fixedly connected to one side of the first fixing frame (8). A gear (10) is fixedly connected to the power output end of the drive motor (9) through the first fixing frame (8). A first rack (29) is fixedly connected to the bottom of one side of the upper mold base (3), and a second rack (24) is fixedly connected to the top of one side of the lower mold base (2). Both the first rack (29) and the second rack (24) mesh with the gear (10). A feed port (19) is provided inside the lower mold base (2). The base (1) has an air inlet and an air outlet. The inlet (19) is fixedly connected to a feed pipe (20) on one side. The input end of the feed pipe (20) is connected to an external sand shooting machine. A valve (21) is provided in the middle of the feed pipe (20). A knob (22) is provided on the top of the valve (21). An air inlet pipe (23) is fixedly connected to one side of the air inlet. The input end of the air inlet pipe (23) is connected to an external air pump. A connecting rod (15) is fixedly connected to the top of the base (1). One end of the connecting rod (15) passes through the bottom of the lower mold base (2) and is fixedly connected to a top material platform (16). A groove (17) is provided on the bottom inner side of the lower mold base (2). Both the upper mold base (3) and the lower mold base (2) are provided with multiple ventilation holes. The diameter of the ventilation holes is smaller than the diameter of the sand and gravel.

2. A cold box mold with a release agent slow-release structure according to claim 1, characterized in that, The lower mold base (2) is provided with a first clearance groove (25) on one side, and the upper mold base (3) is provided with a second clearance groove (28) on one side. The first clearance groove (25) is located at the top of the first rack (29), and the second clearance groove (28) is located at the top of the second rack (24).

3. A cold box mold with a release agent slow-release structure according to claim 2, characterized in that, The base (1) is fixedly connected to the four corners of the top, and the lower mold base (2) is provided with guide holes (18) at the four corners. The lower mold base (2) is movably connected to the guide posts (11), and the top of the guide posts (11) is provided with limit blocks (13).

4. A cold box mold with a release agent slow-release structure according to claim 3, characterized in that, A spring (12) is movably connected to the outside of the guide post (11). The top of the spring (12) is directly movably connected to the bottom of the limiting block (13) by a ball bearing guide sleeve (14). The upper mold base (3) is fixedly connected to the four corners of the upper mold base (3). The outside of the ball bearing guide sleeve (14) is movably connected to the inside of the second guide sleeve (30).

5. A cold box mold with a release agent slow-release structure according to claim 4, characterized in that, The release agent spraying assembly includes a water tank (6) containing release agent liquid. A water pipe (7) is fixedly connected to the output end of the water tank (6). An elastic airbag (31) is fixedly connected to the output end of the water pipe (7). A hose (32) is fixedly connected to the output end of the elastic airbag (31). The hose (32) is provided with multiple output ends.

6. A cold box mold with a release agent slow-release structure according to claim 5, characterized in that, A first pressure block (26) is fixedly connected to one side of the lower mold base (2), and a second pressure block (27) is fixedly connected to one side of the upper mold base (3). A first water distribution frame (4) and a second water distribution frame (5) are fixedly connected to the outer side of the lower mold base (2) and the outer side of the upper mold base (3), respectively. A hollow layer is provided inside the first water distribution frame (4) and the second water distribution frame (5). Multiple output ends of the hose (32) are fixedly connected to the input ends of the first water distribution frame (4) and the second water distribution frame (5), respectively. Multiple nozzles (33) are fixedly connected to one side of the first water distribution frame (4) and the second water distribution frame (5).

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