Core box with locking structure
By designing a locking structure on the core box, using the combination of the clamping loose claws and the fixed shaft, combined with the spring reset and hydraulic lock unlocking mechanism, the problem of opening the mold of the cold core box is solved, and the core making efficiency and the sand core integrity are improved. sex.
Patent Information
- Application Number
- CN202420936911.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-30
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-04-30
AI Technical Summary
Difficulty in opening the mold of existing cold core boxes leads to incomplete shape of the sand core, reducing the core production efficiency and qualification rate, and the core box opening and closing mold structure is complex.
A core box with a locking structure is designed, which adopts the combination of clamping loose claws and fixed shafts, combined with a spring return device and a hydraulic lock unlocking mechanism to achieve convenient opening and closing of the core box and ensure the integrity of the sand core.
Through the locking structure, the core box is successfully opened, the core production efficiency and pass rate are improved, and the opening and closing structure of the core box is simplified.
Smart Images
Figure CN222175853U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of a core box device for a core shooting machine and relates to a core box with a locking structure. Background Art
[0002] At present, the opening and closing of molds of different types of cold core boxes result in incomplete shapes of sand cores, which require the sand cores to be repaired, greatly reducing the production efficiency of core making and the qualified rate of core making. In addition, the structure of the opening and closing of the core box is complicated. Utility Model Content
[0003] In order to make up for the deficiencies of the prior art, the utility model provides a core box with a locking structure, which solves the problem of mold opening difficulty, can smoothly realize the mold opening of the core box sand core, and ensure the integrity of the sand core. The utility model is achieved through the following technical scheme: the utility model provides a core box with a locking structure, including a core box, a core box is installed on the core box bottom plate, a core pushing device is installed below the core box bottom plate, and a locking mechanism is installed on the side wall of the core box in the direction of opening and closing the mold; the locking mechanism includes a fixed shaft 1 and a fixed shaft 2 respectively installed on the side walls of the core box, the tail of the clamping and releasing claw is installed on the fixed shaft 2, the axis of the fixed shaft 2 is movably connected to the clamping and releasing claw, and the head of the clamping and releasing claw is connected to the fixed shaft A clamping connection; the clamping and releasing claw is a special-shaped structure, and the clamping and releasing claw includes a claw body, a clamping socket is arranged on the claw body, and the clamping socket is clamped with a fixed shaft, an unlocking point is arranged at the end of the claw body close to the clamping socket, an upward protrusion is arranged in the middle position of the claw body, and an abutment head is arranged at the tail of the claw body; a spring reset device is fixedly installed on the core box, and the abutment head abuts against the bottom of the spring reset device; a core shooter collision fixed shaft is installed on the core shooter above the core box, and a hydraulic unlocking mechanism is arranged below the bottom plate of the core box.
[0004] Preferably, the fixed shaft is circular, the material of the fixed shaft is a steel shaft, and a wear-resistant sleeve is arranged on the fixed shaft, and the wear-resistant sleeve is a steel sleeve.
[0005] Preferably, when the core box is locked, the fixed shaft and the clamping and releasing claws are locked, and the self-locking angle is 89 degrees; that is, when tightened, the clamping and releasing claws are in contact with the fixed shaft, and the angle between the horizontal line where the connecting line of the centers of the two fixed shafts is located and the horizontal line where the clamping and releasing claws and the fixed shaft are in contact is 89 degrees.
[0006] Preferably, the spring reset device includes a reset bolt, a compression spring and a fixed block, the reset bolt includes a bolt head, a bolt rod and a limit block arranged in sequence from top to bottom, the fixed block is fixedly set on the core box, the bolt rod passes through the fixed block, the compression spring passes through the bolt rod and is sleeved on the bolt rod between the fixed block and the limit block, and the abutment joint of the clamping and releasing claw abuts against the limit block.
[0007] Preferably, the hydraulic unlocking mechanism comprises a hydraulic cylinder, which is located directly below the unlocking point of the clamping and releasing claws.
[0008] The beneficial effects of the utility model are:
[0009] The utility model realizes convenient opening and closing of the core box by arranging a core box opening and locking structure on the side of the core box, and realizes opening and locking of the core box by the cooperation of the clamping and releasing claws and the fixed shaft; the tail of the clamping and releasing claws abuts against the spring reset device to realize buffering of the clamping and releasing claws; the core shooting machine collision fixed shaft and the hydraulic unlocking mechanism are arranged to act on the clamping and releasing claws to realize opening and locking of the core box. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] The utility model is further described below in conjunction with the accompanying drawings;
[0011] Figure 1 It is a schematic diagram of the structure of the clamping and releasing claws of the utility model when unlocking;
[0012] Figure 2 It is a schematic diagram of the structure of the clamping and releasing claws of the utility model when they are locked;
[0013] Figure 3 It is a side view of the main structure of the utility model;
[0014] Figure 4 It is a side sectional view of the main structure of the utility model;
[0015] Figure 5 It is a schematic diagram of the three-dimensional main structure of the utility model;
[0016] In the figure, 1 is the core box bottom plate, 2 is the core pushing device, 3 is the core shooting machine colliding with the fixed axis, 4 is the hydraulic unlocking mechanism, 5 is the spring reset device, 5-1 is the reset bolt, 5-2 is the fixed block, 5-3 is the compression spring, 5-4 is the limit block, 6 is the core rod, 7 is the core box, 8 is the clamping and releasing claw, 8-1 is the unlocking point, 8-2 is the bayonet, 8-3 is the protrusion, 8-4 is the abutment head, 9 is the fixed axis one, and 10 is the fixed axis two. DETAILED DESCRIPTION
[0017] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.
[0018] The accompanying drawing shows a specific embodiment of a core box with a locking structure of the utility model. This embodiment includes a core box, a core box is installed on a core box bottom plate 1, a core push device 2 is installed below the core box bottom plate 1, a locking mechanism is installed on the core box side wall in the core box opening and closing direction, the locking mechanism includes a fixed shaft 1 9 and a fixed shaft 2 10 respectively installed on the side walls of the core box, the tail of the clamping and releasing claw 8 is installed on the fixed shaft 2 10, and the head of the clamping and releasing claw 8 is clamped with the fixed shaft 1 9; the clamping and releasing claw 8 is a heterosexual structure, the clamping and releasing claw includes a claw body, a bayonet 8-2 is provided on the claw body, an unlocking point 8-1 is provided at the end of the claw body close to the bayonet, an upward protrusion 8-3 is provided in the middle position of the claw body, and an abutment head 8-4 is provided at the tail of the claw body; a spring reset device 5 is fixedly installed on the core box 7, and the abutment head 8-4 abuts against the spring reset device 5; a core shooter collision fixed shaft 3 is installed on the core shooter above the core box 7, and a hydraulic unlocking mechanism 4 is provided below the core box bottom plate 1.
[0019] The fixed shaft 1 and the fixed shaft 2 are circular, the fixed shaft is made of steel, and a wear-resistant sleeve is arranged on the fixed shaft, which is a steel sleeve. When the core box is locked, the fixed shaft 1 9 and the clamping and releasing claw 8 are locked, and the self-locking angle is 89 degrees; that is, when tightened, the clamping and releasing claw's bayonet contacts the fixed shaft 1, and the angle between the horizontal line where the connecting line of the two fixed shaft centers is located and the horizontal line where the clamping and releasing claw and the fixed shaft 1 contact position is 89 degrees.
[0020] The spring reset device 5 includes a reset bolt 5-1, a compression spring 5-3 and a fixed block 5-2. The reset bolt 5-1 includes a bolt head, a bolt rod and a limit block 5-4 arranged in sequence from top to bottom. The fixed block 5-2 is fixedly set on the core box 7. The bolt rod passes through the fixed block. The compression spring 5-3 passes through the bolt rod and is sleeved on the bolt rod between the fixed block 5-2 and the limit block 5-4. The abutment joint 8-4 of the clamping and releasing claw abuts against the limit block 5-4.
[0021] The axis of the fixed shaft 2 10 is movably connected with the clamping and releasing claw 8, and a protrusion is provided on the clamping and releasing claw 8. The core shooting machine collision fixed shaft 3 is fixedly installed on the core shooting machine. When the core pushing device 2 pushes up the core box, the protrusion 8-3 of the clamping and releasing claw touches the core shooting machine collision fixed shaft 3. The core shooting machine collision fixed shaft gives the clamping and releasing claw a downward force, driving the clamping and releasing claw to move to the fixed shaft 1 to complete the core box locking movement. After the core shooting machine shoots the core, the hydraulic cylinder of the core pushing device shrinks to move the core box downward as a whole to reset. At this time, the hydraulic unlocking mechanism 4 works, and the hydraulic unlocking mechanism extends upward until it contacts the unlocking point 8-1 of the clamping and releasing claw, and pushes the unlocking point upward, that is, the clamping and releasing claw completes the unlocking movement of the core box.
[0022] The hydraulic unlocking mechanism 4 includes a hydraulic cylinder, which is located just below the unlocking point of the clamping and releasing claw. The hydraulic cylinder lifts the clamping and releasing claw, and the clamping and releasing claw rotates upward, and the other end of the clamping and releasing claw is downward, at which time the spring is reset.
[0023] When the core shooter collides with the fixed shaft 3 and presses down the clamping and releasing claws, the spring contracts and the clamping and releasing claws are stuck.
[0024] As attached Figure 1 As shown in the figure, it is a state diagram of the clamping and releasing claw when unlocking. At this time, the clamping and releasing claw's bayonet 8-2 rotates upward and leaves the fixed shaft 9, realizing the unlocking of the core box; the abutment head 8-4 at the tail of the clamping and releasing claw moves downward under the pressure of the spring reset device 5; at this time, the compression spring of the spring reset device is in the extended state, and the reset bolt moves downward. Figure 2 The figure shows the state when the clamping and releasing claw locks the core box. Due to the rise of the core box, the clamping and releasing claw contacts the core shooting machine and collides with the fixed shaft 3, and then the clamping and releasing claw descends, and its bayonet 8-2 is stuck on the fixed shaft 9, so that the core box is locked; according to the lever principle, the abutment 8-4 at the tail of the clamping and releasing claw gives an upward force to the reset bolt, and the reset bolt moves upward. At this time, the compression spring 5-3 is in a compressed state; when the equipment needs to be reset manually, pressing the reset bolt to move downward can also make the bayonet of the clamping and releasing claw bounce upward, so as to unlock the core box.
Claims
1. A core box with a locking structure, comprising a core box, characterized in that: A core box is installed on the core box bottom plate, a core pushing device is installed below the core box bottom plate, and a locking mechanism is installed on the core box side wall in the opening and closing direction of the core box; the locking mechanism comprises a fixed shaft one and a fixed shaft two respectively mounted on the side walls of the core box, the tail of the clamping and releasing claw is mounted on the fixed shaft two, the axis of the fixed shaft two is movably connected with the clamping and releasing claw, and the head of the clamping and releasing claw is clamped with the fixed shaft one; the clamping and releasing claw is a special-shaped structure, the clamping and releasing claw comprises a claw body, a bayonet is arranged on the claw body, the bayonet is clamped with the fixed shaft one, an unlocking point is arranged at the end of the claw body close to the bayonet, an upward protrusion is arranged in the middle position of the claw body, and an abutment head is arranged at the tail of the claw body; a spring reset device is fixedly installed on the core box, and the abutment head abuts with the bottom of the spring reset device; a core shooting machine collision fixed shaft is installed on the core shooting machine above the core box, and a hydraulic unlocking mechanism is arranged below the core box bottom plate.
2. The core box with locking structure according to claim 1, characterized in that: The fixed shaft is circular and made of a steel shaft. A wear-resistant sleeve is arranged on the fixed shaft and the wear-resistant sleeve is made of a steel sleeve.
3. The core box with locking structure according to claim 1, characterized in that: When the core box is locked, the fixed shaft and the clamping and releasing claws are locked, and the self-locking angle is 89 degrees; that is, when tightened, the clamping and releasing claws contact the fixed shaft, and the angle between the horizontal line where the connecting line of the two fixed shaft centers is located and the horizontal line where the clamping and releasing claws and the fixed shaft are in contact is 89 degrees.
4. The core box with locking structure according to claim 1, characterized in that: The spring reset device includes a reset bolt, a compression spring and a fixed block. The reset bolt includes a bolt head, a bolt rod and a limit block which are arranged in sequence from top to bottom. The fixed block is fixedly arranged on the core box. The bolt rod passes through the fixed block. The compression spring passes through the bolt rod and is sleeved on the bolt rod between the fixed block and the limit block. The abutment of the clamping and releasing claw abuts against the limit block.
5. The core box with locking structure according to claim 1, characterized in that: The hydraulic unlocking mechanism comprises a hydraulic cylinder, which is located just below the unlocking point of the clamping and releasing claws.