Die lock cylinder tool
By designing a mold core locking fixture, and utilizing sand shooting and air blowing to cure resin sand, the problems of low sand core assembly efficiency and excessive positional tolerance were solved, achieving efficient locking and improving the casting yield.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO YONGCHAO MOLD CO LTD
- Filing Date
- 2025-06-23
- Publication Date
- 2026-05-26
AI Technical Summary
In existing technologies, sand core assembly is inefficient and prone to positional errors, leading to the scrapping of castings.
Design a mold locking core tooling, including a base, support plate, positioning block, side pressure component and air blowing plate, to lock multiple sand cores by sand injection and air blowing to cure resin sand, and use a cylinder to drive the pressure block to press and release the sand cores, and the guide rod ensures linear movement to protect the cylinder.
It improves the efficiency of sand core assembly and the yield of finished castings, ensures the accurate positioning of sand cores, prevents displacement during sand injection, and improves the dimensional accuracy and casting quality after core assembly.
Smart Images
Figure CN224273200U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of lock cylinders, and in particular to a mold lock cylinder tooling. Background Technology
[0002] Sand cores are key components used in casting production to manufacture mold cores. They are generally composed of casting sand, molding sand binder, and additives mixed in a specific ratio. In cylinder casting, multiple main cores forming the mold cavity are usually pre-threaded together with screws and then lowered into the mold as a whole. This screw-threading and fixing of the sand cores is done manually, resulting in low assembly efficiency. Furthermore, during manual tightening of the screws, twisting can easily occur between different sand cores, causing positional errors in the cylinder barrel of the later casting, ultimately leading to the scrapping of the casting. Summary of the Invention
[0003] In view of this, the purpose of this utility model is to overcome the shortcomings of the prior art and provide a mold lock core tooling.
[0004] This utility model provides a mold locking core tooling for locking multiple sand cores, including a base 1, a support plate 2 on the base 1, a positioning block 3 for positioning the sand core on the support plate 2, side pressing components 6 for pressing the sand core symmetrically arranged on the left and right sides of the support plate 2, and a sand shooting plate 4 and an air blowing plate 5 arranged sequentially from bottom to top on the support plate 2.
[0005] Furthermore, the side pressure assembly 6 includes a mounting plate disposed on the support plate 2. A cylinder 6.1 is obliquely disposed on the mounting plate. A connecting plate 6.2 is disposed at the piston rod end of the cylinder 6.1. A plurality of pressure blocks 6.3 corresponding to the sand core are disposed at the connecting plate 6.2.
[0006] Furthermore, a buffer pad 6.4 is provided on the end face of the pressure block 6.3, and guide rods 6.5 are symmetrically provided on the front and rear sides of the connecting plate 6.2. The guide rods 6.5 slide along the movement direction of the cylinder 6.1 on the mounting plate.
[0007] Furthermore, pads are provided around the top of the air blowing plate 5.
[0008] Furthermore, the sand-shooting plate 4 has a first square hole located above the positioning block 3, a sand hopper 7 is installed at the first square hole, and a round hole is vertically and equidistantly provided at the sand hopper 7, and a sand-shooting pipe 8 is provided at the round hole.
[0009] Furthermore, the air blowing plate 5 has a second square hole located above the first square hole, and an air bucket 9 is installed at the second square hole. The bottom of the air bucket 9 has an air hole facing the sand-shooting pipe 8.
[0010] The advantages of this invention are as follows: Resin sand is injected into the sand core cavity and cured by blowing air, thereby locking multiple sand cores and improving sand core assembly efficiency and casting yield; after the sand core is placed on the positioning block, the sand core is pressed down by the side pressure component to prevent displacement of the sand core during sand injection; the core shooter injects resin sand into the sand core cavity through the sand shooting plate, filling the sand core cavity with resin sand, and then blows ammonia gas into the sand core cavity through the air blowing plate to cure the sand inside the sand core cavity. The cured resin sand then locks multiple sand cores together. Together; the cylinder drives the pressure plate to tilt inward through the connecting plate to press the sand core. After sand shooting and air blowing to cure the resin sand, the cylinder drives the pressure plate to move outward and reset through the connecting plate to release the sand core; the guide rod can ensure linear movement, avoid deflection, and bear lateral load to protect the cylinder; the guide rod can ensure linear movement, avoid deflection, and bear lateral load to protect the cylinder. Ammonia gas is blown through the air hole, and the ammonia gas is blown into the resin sand in the sand core cavity through the sand shooting pipe, so that the resin sand in the sand core cavity is cured. Attached Figure Description
[0011] Figure 1 This is a perspective view of the present utility model;
[0012] Figure 2 This is the front view of the present invention;
[0013] Figure 3 for Figure 2 AA section view;
[0014] Figure 4 This is a schematic diagram of the structure of the present invention when the sand core is locked;
[0015] Figure 5 This is a cross-sectional view of the sand core being locked in place according to this utility model. Detailed Implementation
[0016] The present invention will now be described in detail with reference to the accompanying drawings.
[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.
[0018] See Figures 1 to 5This utility model provides a mold locking fixture for locking multiple sand cores. It includes a base 1, a support plate 2 on the base 1, and positioning blocks 3 for positioning the sand cores on the support plate 2. Side pressing components 6 for pressing the sand cores are symmetrically arranged on the left and right sides of the support plate 2. After a sand core is placed on the positioning block, the side pressing components press the sand core to prevent displacement during sand injection. A sand injection plate 4 and an air blowing plate 5 are arranged sequentially from bottom to top above the support plate 2. Pads are arranged around the top of the air blowing plate 5. When the fixture is flipped over, the pads can stably support the sand cores. A sand core cavity is created in the middle. Multiple main cores are placed on the positioning block in sequence, and the sand core cavities are connected together. The sand cores are pressed together by the side pressure component. The core shooter shoots resin sand into the sand core cavity through the sand shooting plate. The resin sand enters the sand core cavity through the hole of the sand core cavity, filling the sand core cavity with resin sand. Then, it is removed from the core shooter and ammonia gas is blown into the sand core cavity through the air blowing plate to solidify the sand inside the sand core cavity. The solidified resin sand then locks multiple sand cores together, which greatly improves the sand core assembly efficiency, improves the dimensional accuracy of the core group after core assembly, and improves the casting yield.
[0019] See Figure 1 , Figure 4 The side-pressure assembly 6 includes a mounting plate disposed on the support plate 2. A cylinder 6.1 is obliquely disposed on the mounting plate. A connecting plate 6.2 is disposed at the end of the piston rod of the cylinder 6.1. Several pressure blocks 6.3 corresponding to the sand core are disposed at the connecting plate 6.2. Multiple main cores are placed on the positioning blocks in sequence. Then, the cylinder drives the pressure plate to tilt inward through the connecting plate to press the sand core. After sand shooting and air blowing to cure the resin sand, the cylinder drives the pressure plate to move outward and reset through the connecting plate to release the sand core. The assembled core assembly can be removed manually or using clamps.
[0020] The end face of the pressure block 6.3 is provided with a buffer pad 6.4, and guide rods 6.5 are symmetrically arranged on the front and rear sides of the connecting plate 6.2. The guide rods 6.5 slide on the mounting plate along the movement direction of the cylinder 6.1. The guide rods can ensure linear movement, avoid deflection, and bear lateral loads to protect the cylinder.
[0021] The sand-shooting plate 4 has a first square hole located above the positioning block 3. A sand hopper 7 is installed at the first square hole. Circular holes are vertically and equidistantly opened at the sand hopper 7, and sand-shooting pipes 8 are installed at the circular holes. The core shooter shoots resin sand into the sand core cavity through the sand-shooting pipes.
[0022] The air blowing plate 5 has a second square hole located above the first square hole. An air bucket 9 is installed at the second square hole, and the bottom of the air bucket 9 has an air hole facing the sand-shooting pipe 8. Ammonia gas is blown through the air hole, and the ammonia gas is blown into the resin sand in the sand core cavity through the sand-shooting pipe, so that the resin sand in the sand core cavity is cured.
[0023] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.
Claims
1. A mold lock core tooling for locking a plurality of sand cores, characterized by: The application relates to a sand core positioning and pressing device, which comprises a base, a supporting plate arranged on the base, positioning blocks for positioning sand cores arranged on the supporting plate, side pressing assemblies for pressing the sand cores symmetrically arranged on the left and right sides of the supporting plate, a sand shooting plate and a gas blowing plate sequentially arranged above the supporting plate from bottom to top.
2. A tool for a lock cylinder as defined in claim 1, characterized in that The side pressing assembly comprises a mounting plate arranged on the supporting plate, a gas cylinder obliquely arranged on the mounting plate, a connecting plate arranged at the end of the piston rod of the gas cylinder, and a plurality of pressing blocks corresponding to the sand cores arranged at the connecting plate.
3. A tool for a lock cylinder as defined in claim 2, characterized in that: The end surface of the pressing block is provided with a buffer pad, and the front and back sides of the connecting plate are symmetrically provided with guide rods which are slidably arranged on the mounting plate along the moving direction of the gas cylinder.
4. A tool for a lock cylinder according to claim 1, characterized in that: A plurality of cushion columns are arranged around the top end of the gas blowing plate.
5. A mold core tooling as defined in claim 1, wherein: A first square hole is formed on the sand shooting plate above the positioning blocks, a sand hopper is arranged at the first square hole, a plurality of circular holes are vertically and equidistantly formed on the sand hopper, and sand shooting pipes are arranged at the circular holes.
6. A tool for a lock cylinder according to claim 5, characterized in that: A second square hole is formed on the gas blowing plate above the first square hole, a gas hopper is arranged at the second square hole, and a gas hole is formed on the bottom of the gas hopper and faces the sand shooting pipes.