Riser-free single-cylinder brake caliper casting structure of green sand horizontal line
By using the unauthorized structural design in the single -cylinder brake pliers in the tidal mold sand horizontal line, the symmetrical pouring of the liquid metal metal with a number of crossing and inner pouring ports is used to solve the contraction of the single -cylinder brake pliers in existing technology The problem of loosening has achieved the effect of reducing costs and increasing production rates.
Patent Information
- Application Number
- CN202323492946.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-21
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2033-12-21
AI Technical Summary
The existing molded sand horizontal line cast single-cylinder brake calipers are prone to shrinkage at the connection position of the claws and bridges, resulting in complex casting process, high cost, increased product weight and reduced mass.
Use the tidal mold sand horizontal line without a stand -alone single -cylinder brake clamp for casting structure, setting straight lanes through the structure of the structure, and using its horizontal vertical axis as the symmetrical axis, left and right mirror, set up multiple horizontal lanes and internal watering in order The mouth, realize the symmetrical pouring of the liquid metal, fix the position and size of the shrinkage, and simultaneously cast multiple single -cylinder brake clamps at the same time.
In the case of not increasing the complexity and cost of casting, the deflection position and size of the fixed single -cylinder brake pliers, reducing the weight of the casting and the production cost, and increased the production rate.
Smart Images
Figure CN222403312U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of casting, in particular to a green sand horizontal line riser-free single-cylinder brake caliper casting structure. Background Art
[0002] Green sand is a casting process that uses sand with water glass as a binder to make the sand mold gradually become damp during casting, which has good compressive resistance. This process is widely used in production and is generally used to produce large castings.
[0003] At present, a single-cylinder brake caliper is cast horizontally using green sand. The claw and bridge of the single-cylinder brake caliper are thick and large parts. When the molten iron solidifies, shrinkage will occur at the connection position of the claw and the bridge. Usually, a riser is set at the bridge position to compensate for the shrinkage and achieve the purpose of eliminating the shrinkage. However, the riser increases the complexity of the casting: the use of the riser increases the complexity of the casting and makes the casting process more cumbersome; additional molten metal is required: the use of the riser requires additional molten metal, which increases the cost of casting; the total weight of the casting may be increased: due to the existence of the riser, the total weight of the casting may be increased, affecting the handling and subsequent processing of the casting; in addition, unreasonable riser design will also lead to waste of molten metal and a decrease in the quality of the casting.
[0004] Therefore, the prior art has the disadvantages of complex casting molds, the need for shrinkage compensation, inconvenience in subsequent processing, increased costs and low yield. Utility Model Content
[0005] In order to solve the technical problems existing in the prior art, the utility model provides a green sand horizontal line riser-free single-cylinder brake caliper casting structure.
[0006] The technical solution of the utility model is to provide a green sand horizontal line riser-free single-cylinder brake caliper casting structure, including a sprue seat arranged at the middle position of the structure and two four-way structure first runners, six three-way structure second runners, four double-way structure third runners, twelve ingates and six single-cylinder brake caliper casting mold cavities arranged in sequence with a sprue seat arranged at the middle position of the structure and a horizontal plane longitudinal axis as a symmetry axis.
[0007] The six second runners are symmetrically arranged on the upper side, the lower side and the opposite side of the first runner relative to the sprue seat, and one first ingates, one first ingates and two second ingates are arranged at the three-way intersection positions respectively;
[0008] The four third runners are arranged transversely and symmetrically, wherein one end is respectively connected to the three-way intersection of the second runner located at the upper side and the lower side of the first runner, and the other end is provided with a third inner gate;
[0009] A single-cylinder brake caliper casting cavity is respectively arranged between the first inner gates and between the second inner gates and the third inner gates.
[0010] Furthermore, the structure further comprises a baffle, and the baffle is arranged between the first runner and the second runner.
[0011] Furthermore, the structure further comprises a filter plate, and the filter plate is arranged between the sprue seat and the first runner.
[0012] Compared with the prior art, the green sand horizontal line riser-free single-cylinder brake caliper casting structure provided by the utility model has the following beneficial effects:
[0013] The structure as a whole is symmetrical left and right and up and down, including a sprue seat arranged in the middle of the structure and two four-way structure first runners, six three-way structure second runners, four double-way structure third runners, twelve inner gates and six single-cylinder brake caliper casting cavities arranged in sequence with its horizontal plane longitudinal axis as the symmetry axis. Liquid metal is injected into the casting structure from the sprue seat, and after passing through the first runner, the second runner, the third runner and the inner gate in sequence, it is simultaneously poured at symmetrical positions on both sides of the same single-cylinder brake caliper casting cavity, so that the shrinkage of the bridge and claw connection positions on both sides of the single-cylinder brake caliper is fixed at the same position and size. At the same time, the structure can cast multiple single-cylinder brake calipers at the same time in one pouring, so as to achieve the effect of reducing costs and increasing efficiency.
[0014] By setting baffles and filters, the flow rate of liquid metal can be stabilized so that it can be injected into the casting cavity at a uniform speed, so as to further reduce shrinkage and heat nodes and improve the output rate. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a top view of an embodiment of the utility model.
[0016] Figure 2 It is a front cross-sectional view of an embodiment of the utility model.
[0017] Figure 3 It is a top view of the casting cavity of the single-cylinder brake caliper in the embodiment of the utility model.
[0018] Figure 4 It is a front cross-sectional view of a single-cylinder brake caliper in an embodiment of the utility model. DETAILED DESCRIPTION
[0019] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.
[0020] Provide green sand horizontal line riser-free single-cylinder brake caliper casting structure, such as Figure 1 and Figure 2As shown, the structure as a whole is symmetrical in left and right as well as in top and bottom, including a sprue seat 100 arranged in the middle of the structure and two first cross runners 101 of a four-way structure, six second cross runners 102 of a three-way structure, four third cross runners 103 of a double-way structure, twelve inner gates and six single-cylinder brake caliper casting cavities 300 arranged in a mirror image with its horizontal plane longitudinal axis as the symmetry axis; six second cross runners 102 are symmetrically arranged on the upper side, lower side and opposite side of the first cross runner 101 and one first inner gate 201, one first inner gate 201 and two second inner gates 202 are arranged at the three-way intersection position respectively. The other end of the gate 201 is arranged toward the axis of symmetry, so the first ingates 201 symmetrically arranged on both sides of the axis of symmetry form a group, and a single-cylinder brake caliper casting cavity 300 is arranged in the middle. Two second ingates 202 arranged on a second runner 102 are arranged upward and downward respectively, and serve as the ingates of two single-cylinder brake calipers respectively; four third runners are arranged laterally symmetrically, wherein one end is respectively connected to the three-way intersection of the second runner 102 located on the upper side and the lower side of the first runner 101, and the other end is provided with a third ingate 203, and the third ingate 203 is arranged downward or upward, and forms a group with the adjacent second ingates 202, and a single-cylinder brake caliper casting cavity 300 is arranged in the middle. Specifically, the liquid metal is injected into the casting structure from the sprue seat 100, and after passing through the first runner 101, the second runner 102, the third runner 103 and the ingates in sequence, it is poured simultaneously at the symmetrical positions on both sides of the same single-cylinder brake caliper casting cavity 300, such as Figure 3 and Figure 4 As shown, the shrinkage of the connection position of the bridge part 301 and the claw part 302 on both sides of the single-cylinder brake caliper is fixed at the same position and size. At the same time, the structure can cast multiple single-cylinder brake calipers at the same time in one casting to achieve the effect of reducing costs and increasing efficiency.
[0021] In addition, by adjusting the raw material ratio, molten iron treatment and chemical composition, the shrinkage tendency of molten iron is improved, the self-shrinkage compensation ability is improved, and the purpose of eliminating shrinkage is achieved. Specifically, the raw material ratio is: scrap steel 35%±2%, return material 65%±2%; C of molten iron before furnace: 3.7~3.8%; Si: 1.7~1.8%; CE (i.e. C+1 / 3Si): 4.27~4.4%; spheroidizing treatment: adding 0.9% of ordinary rare earth magnesium spheroidizing agent; inoculation treatment: adding 0.2% of ordinary silicon-barium inoculant in the ladle; C of molten iron after furnace: 3.6~3.7%; Si: 2.2~2.4%; CE (i.e. C+1 / 3Si): 4.33~4.5%.
[0022] Furthermore, if Figure 1 As shown, the structure further includes a spoiler A, which is disposed between the first runner 101 and the second runner 102 to slow down the flow velocity.
[0023] Furthermore, if Figure 1 As shown, the structure also includes a filter plate B, which is arranged between the straight runner seat 100 and the first horizontal runner 101 to filter the molten iron, thereby reducing impurities in the molten iron and stabilizing the flow rate of the molten iron in the sand mold during casting.
Claims
1. The green sand horizontal line riser-free single-cylinder brake caliper casting structure is characterized by: It includes arranging a sprue seat in the middle position of the structure and arranging two first cross runners of a four-way structure, six second cross runners of a three-way structure, four third cross runners of a double-way structure, twelve ingates and six single-cylinder brake caliper casting cavities in a mirror image with its horizontal plane longitudinal axis as the symmetry axis; The six second runners are symmetrically arranged on the upper side, the lower side and the opposite side of the first runner relative to the sprue seat, and one first ingates, one first ingates and two second ingates are arranged at the three-way intersection positions respectively; The four third runners are arranged transversely and symmetrically, wherein one end is respectively connected to the three-way intersection of the second runner located at the upper side and the lower side of the first runner, and the other end is provided with a third inner gate; A single-cylinder brake caliper casting cavity is respectively arranged between the first inner gates and between the second inner gates and the third inner gates.
2. The green sand horizontal line riser-free single-cylinder brake caliper casting structure according to claim 1, characterized in that: The structure further includes a spoiler disposed between the first runner and the second runner.
3. The green sand horizontal line riser-free single-cylinder brake caliper casting structure according to claim 1, characterized in that: The structure further comprises a filter plate, and the filter plate is arranged between the sprue seat and the first runner.