Headstock forward-turning support and wax mould casting mould thereof
By designing the "ㄥ" shaped front flip bracket and adopting a wax mold casting process, the problems of insufficient bending moment resistance and safety hazards of the front flip bracket in the prior art are solved, and higher support and limiting effects and a more efficient production process are achieved.
Patent Information
- Application Number
- CN202411658160.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-20
- Publication Date
- 2025-02-25
AI Technical Summary
The existing front flip brackets are likely to cause the fixing screws to loosen during the flip process, and the flipped cab is not fully supported, resulting in huge loads on the connecting rods, which poses safety hazards.
A "ㄥ" shaped front flip bracket is designed to form bending moment resistance through the fixing of both ends of the bottom, and limit and support the cab using the oblique edges. The bracket is produced by wax mold casting process and is molded using wax mold molds.
The front front tilt bracket can effectively support and limit the front, improve bending moment resistance and avoid safety hazards. At the same time, the subsequent mechanical processing volume is reduced through the wax mold casting process, and the production efficiency and finished product quality are improved.
Smart Images
Figure CN119503031A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of wax pattern casting, in particular to a front flip bracket of a vehicle head and a wax pattern casting mold thereof. Background Art
[0002] When the front of a truck is being repaired, the cab needs to be flipped forward, and then the weight of the entire cab will be pressed on the flip bracket, causing a forward bending moment to it. If this continues for a long time, it will easily cause the fixing screws of the flip bracket to loosen. Moreover, the existing front flip bracket does not fully support the flipped cab. The flipped cab still relies on the connecting rod for support, which generates a huge load on the connecting rod. If the connecting rod fails, it will cause a safety accident. Summary of the invention
[0003] The purpose of the present invention is to provide a front flip bracket and its wax casting mold to address the deficiencies of the prior art. It provides a "ㄥ"-shaped bracket, which is fixed at both ends of the bottom to form a strong bending moment resistance, and relies on the oblique edges to limit and support the cab.
[0004] The technical solution adopted by the present invention to solve its technical problems is: a front flip bracket of the vehicle, which is in the shape of a "ㄥ", including a bottom side and a hypotenuse, a horizontal mounting plate is arranged at the left end of the bottom side, and a vertical mounting plate is arranged at the right end, the left and right mounting plates are connected by a "cross" rib plate, and the two side edges of the horizontal rib plate are provided with vertical ribs in a T-shape with the horizontal rib plate, the left side surface of the horizontal mounting plate and the right side surface of the vertical mounting plate are respectively provided with a groove for reducing the weight of the bracket; the hypotenuse cross-section is in a T-shape, the hypotenuse extends to the upper right and inward, and the top of the hypotenuse is provided with an ear plate for installing the cab, and the ear plate is perpendicular to the horizontal mounting plate.
[0005] Because the front flip bracket of the vehicle is small in size and complex in structure, in order to improve production quality and efficiency, the present invention adopts a wax mold casting process, that is, a wax mold must be made first, and the wax mold casting mold for making the wax mold of the front flip bracket of the vehicle comprises an upper mold and a lower mold, the upper mold and the lower mold are in a two-step shape when viewed from the front, and two cavities are arranged inside, one of the cavities is rotated 180° around the center point between the two and is mirror-symmetrical with the other cavity above and below, and a wax injection hole is arranged at the junction of the upper mold and the lower mold; A movable block group for forming the bottom edge is provided at each end, and the movable block group includes an insert 1 embedded in the lower mold, and a main insert slidably connected to the lower mold and driven by a cylinder 1 fixed to the lower mold, the front end of the main insert is connected to an insert 2 that can be embedded in the upper mold through a pin, and an insert 3 for forming the side groove of the horizontal mounting plate and an insert 4 for forming the side groove of the vertical mounting plate are provided on the outer sides of the two ends of the main insert, and the insert 4 is slidably connected to the lower mold and driven by a cylinder 2 fixed to the lower mold.
[0006] Preferably, the mold cavity is provided with a top mold hole at a position corresponding to the ear plate, and a connecting column groove is provided at a position corresponding to the bevel near the ear plate to facilitate the wax mold assembly. According to the positional relationship between the two mold cavities, the top mold hole and the connecting column groove of one of the mold cavities are located in the lower mold, and the top mold hole and the connecting column groove of the other mold cavity are located in the upper mold.
[0007] Preferably, an embedding block is provided at the connection between the main insert and the second insert close to one end of the horizontal mounting plate, and the mold cavity is provided with a shrinkage compensation cavity for replenishing liquid during casting at the embedding block.
[0008] Preferably, the main insert and the fourth insert are provided with a positioning groove for facilitating the closing of the upper mold, and the cross-section of the positioning groove is triangular and is larger at the top and smaller at the bottom.
[0009] Preferably, a ejection hole is provided in the middle of the lower mold corresponding to the insert one.
[0010] Preferably, the lower die is provided with a limiter for limiting the four strokes of the insert.
[0011] The beneficial effects of the present invention are as follows: the present invention adopts a "ㄥ"-shaped front flip bracket for the vehicle, which can support, limit and resist bending moments for the vehicle front, improve product performance and eliminate safety hazards; the wax mold mold for making the front flip bracket for the vehicle front can be one mold with two pieces and multiple inserts, the quality of the wax mold after molding is high, the finished product after casting does not require welding and other processes, and the amount of mechanical processing is also reduced. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 This is a front view of the front flip bracket of the vehicle head of the present invention; Figure 2 It is a three-dimensional diagram of the front flip bracket of the vehicle head of the present invention; Figure 3 It is a front view of the wax mold of the front flip bracket of the vehicle head of the present invention; Figure 4 It is a three-dimensional diagram of the wax mold of the front flip bracket of the vehicle head of the present invention without the upper mold; Figure 5 It is a top view of the wax mold of the front flip bracket of the vehicle head of the present invention without the upper mold; Figure 6 yes Figure 5 AA section view.
[0013] Description of reference numerals: 1——bottom edge, 11——horizontal mounting plate, 12——vertical mounting plate, 2——bevel edge, 21——ear plate, 3——upper die, 4——lower die, 41——top material hole, 5——mold cavity, 51——top die hole, 52——connecting column groove, 53——shrinkage feeding cavity, 6——wax injection hole, 7——movable block group, 71——insert one, 72——cylinder one, 73——main insert, 74——insert two, 75——insert three, 76——insert four, 77——cylinder two, 8——embedded block. DETAILED DESCRIPTION
[0014] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments, but the implementation scope of the present invention is not limited thereto.
[0015] like Figure 1 , 2 As shown, the upper, lower, left and right directions of this embodiment are Figure 1 For reference, the direction perpendicular to and pointing to the paper surface is inside. A front flip bracket of the vehicle head of the present embodiment is in the shape of a letter "ㄥ", including a bottom side 1 and a hypotenuse 2. A horizontal mounting plate 11 is provided at the left end of the bottom side 1, and a vertical mounting plate 12 is provided at the right end. The left and right mounting plates are connected by a "cross" shaped rib plate, and the two side edges of the horizontal rib plate are provided with vertical ribs in a T-shape with the horizontal rib plate. The left side surface of the horizontal mounting plate 11 and the right side surface of the vertical mounting plate 12 are respectively provided with grooves for reducing the weight of the bracket; the hypotenuse 2 has a T-shaped cross section, and the hypotenuse 2 extends to the upper right and inward, and the top of the hypotenuse 2 is provided with an ear plate 21 for installing the cab, and the ear plate 21 is perpendicular to the horizontal mounting plate 11.
[0016] The horizontal mounting plate 11 and the vertical mounting plate 12 are both rectangular plates, with bolt fixing holes at the four corners, and the ear plate 21 is provided with mounting holes. The front flip bracket of the vehicle head of this embodiment is produced by wax casting process, and the fixing holes and mounting holes are not formed in the casting, but are completed by subsequent mechanical processing. In addition, the front flip bracket of this embodiment is made of cast steel.
[0017] like Figures 3 to 6 As shown, the wax mold mold of the front flip bracket of the vehicle head in this embodiment includes an upper mold 3 and a lower mold 4. The upper mold 3 and the lower mold 4 are in a two-step shape when viewed from the front, and two cavities 5 are arranged inside. One of the cavities 5 is mirror-symmetrical with the other cavity 5 after rotating 180° around the center point between the two. The upper mold 3 and the lower mold 4 are provided with wax injection holes 6 at the junction; the two ends of the lower mold 4 are respectively provided with a movable block group 7 for molding the bottom edge 1, and the movable block group 7 includes a An insert 71, and a main insert 73 slidably connected to the lower mold 4 and driven by a cylinder 72 fixed to the lower mold 4, the front end of the main insert 73 is connected to an insert 74 that can be embedded in the upper mold 3 through a pin, and inserts 75 for forming the side grooves of the horizontal mounting plate 11 and inserts 76 for forming the side grooves of the vertical mounting plate 12 are arranged on the outer sides of both ends of the main insert 73, and the insert 76 is slidably connected to the lower mold 4 and driven by a cylinder 77 fixed to the lower mold 4.
[0018] The cavity 5 shown is a follow-up front flip bracket. Because of the positional relationship between the two cavities 5, it can be seen that the two main inserts 73 respectively embedded in the two cavities 5 are mirror images of each other, the two inserts 71 are installed in mirror images of each other, and the two inserts 74 are installed in mirror images of each other.
[0019] In order to facilitate the removal of the inserts when removing the mold, an embedding block 8 is provided at the connection between the main embedding block 73 and the second embedding block 74 near one end of the horizontal mounting plate 11. The embedding block 8 is trapezoidal and is mutually embedded and positioned with the main embedding block 73 and the second embedding block 74. In order to improve the quality of the casting and prevent defects such as shrinkage holes, the mold cavity 5 is provided with a shrinkage compensation cavity 53 for replenishing liquid during casting at the embedding block 8.
[0020] In order to facilitate mold removal, the cavity 5 is provided with a top mold hole 51 at the position corresponding to the ear plate 21, and the lower mold 4 is provided with a top material hole 41 at the middle part corresponding to the insert 71. The cross-sections of the top mold hole 51 and the top material hole 41 are both square, and a push rod driven by a cylinder can be arranged in the square hole.
[0021] In order to improve the casting efficiency of the workpiece, several wax model trees are usually cast together. Therefore, the cavity 5 is provided with a connecting column groove 52 corresponding to the position of the bevel 2 close to the ear plate 21 for facilitating the wax model tree. The wax model column formed at the connecting column groove 52 is used for bonding with the wax model rod.
[0022] When the front flip bracket of the vehicle head of the present embodiment is formed into a wax mold by using a wax mold, the steps are as follows: the first step is to embed the insert 1 71 (insert 2 74), the insert 3 75, and the embedding block 8 that need to be embedded with the lower mold 4 into the lower mold 4, and push the insert 4 76 forward into place; the second step is to assemble the insert 2 74 (insert 1 71) with the main insert 73 using pins, embed the embedding block 8, and then push the main insert 73 forward into place; the third step is to 3 is lowered to close the mold; the fourth step is wax injection molding; the fifth step is that the upper mold 3 is moved upward to open the mold; the sixth step is to remove the insert 2 74 (insert 1 71) and the clamping block 8 assembled with the main insert 73; the seventh step is to start the cylinder to drive the main insert 73 and the insert 4 76 to retreat; the eighth step is to push up the ejector rods in the ejection mold hole 51 and the ejection hole 41 to take out the wax mold and the insert engaged with the lower mold 4; the ninth step is to repeat the previous steps to form the next wax mold.
[0023] The wax model mold of this embodiment has more inserts. In order to facilitate the insertion and removal of the inserts, the inserts are made of lightweight materials, such as aluminum alloy, and weight-reducing structures such as slots can be provided as much as possible.
[0024] The wax mold of this embodiment can form a complete front flip bracket of the vehicle to avoid subsequent welding or other connection methods to combine the products, and the cast bracket only needs to be drilled, which greatly reduces the production cost.
[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention, and for the convenience of describing the technical solution, the front, back, left, right, top, middle, bottom and other directions are set based on the drawings, rather than limiting the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.
Claims
1. A front tilt bracket, characterized in that: It is in the shape of a letter "ㄥ", including a bottom side and a hypotenuse. A horizontal mounting plate is arranged at the left end of the bottom side, and a vertical mounting plate is arranged at the right end. The left and right mounting plates are connected by a "cross" shaped rib plate, and the two side edges of the horizontal rib plate are provided with vertical ribs in a T-shape with the horizontal rib plate. The left side surface of the horizontal mounting plate and the right side surface of the vertical mounting plate are respectively provided with grooves for reducing the weight of the bracket; the hypotenuse cross-section is in the shape of a letter "T", and the hypotenuse extends to the upper right and inward, and an ear plate for installing the cab is arranged on the top of the hypotenuse, and the ear plate is perpendicular to the horizontal mounting plate.
2. The front tilt bracket of a vehicle according to claim 1, characterized in that: A wax casting mold for making the bracket comprises an upper mold and a lower mold, wherein the upper mold and the lower mold are in the shape of two steps when viewed from the front, and two cavities are arranged inside, wherein one of the cavities is mirror-symmetrical with the other cavity above and below after rotating 180° around the center point between the two, and a wax injection hole is arranged at the junction of the upper mold and the lower mold; a movable block group for molding the bottom edge is arranged at each end of the lower mold, and the movable block group comprises an insert 1 embedded in the lower mold, and a main insert slidably connected to the lower mold and driven by a cylinder 1 fixed to the lower mold, the front end of the main insert is connected to an insert 2 embedded in the upper mold by a pin, and an insert 3 for molding the side groove of the horizontal mounting plate and an insert 4 for molding the side groove of the vertical mounting plate are arranged on the outer sides of the two ends of the main insert, and the insert 4 is slidably connected to the lower mold and driven by a cylinder 2 fixed to the lower mold.
3. The wax casting mold for the front flip bracket of a vehicle head according to claim 2, characterized in that: The mold cavity is provided with a top mold hole at a position corresponding to the ear plate, and a connecting column groove is provided at a position corresponding to the bevel close to the ear plate to facilitate the wax mold tree.
4. The wax casting mold for the front flip bracket of a vehicle according to claim 2, characterized in that: An embedding block is arranged at the connection between the main embedding component and the second embedding component close to one end of the horizontal mounting plate, and the mold cavity is provided with a shrinkage compensation cavity for replenishing liquid during casting at the embedding block.
5. The wax casting mold for the front flip bracket of a vehicle head according to claim 2, characterized in that: The main insert and the fourth insert are provided with positioning grooves for facilitating the closing of the upper mold. The cross section of the positioning groove is triangular and is larger at the top and smaller at the bottom.
6. The wax casting mold for the front flip bracket of a vehicle head according to claim 2, characterized in that: The lower die is provided with a ejection hole in the middle portion corresponding to the insert one.