Die structure for disassembling exhaust insert at bridge package hole position of cold core box
By setting up exhaust inserts at the cold core box of the bridge shell core box to increase the local exhaust area, the problems of false sand injection and poor exhaust in the bridge shell sand core are solved, and stable and reliable sand core production and casting quality are achieved.
Patent Information
- Application Number
- CN202422218593.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-10
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-09-10
AI Technical Summary
In casting production, the sand core of the bridge shell is prone to defects such as false sand injection and poor exhaust gas due to its complex shape and large flushing force, resulting in poor quality of the casting.
A mold structure is designed to remove exhaust inlays at the bridge-covered hole position of the cold core box. By setting exhaust inlays at the cold core box of the bridge shell core box, the local exhaust area is increased. The exhaust insert includes a bottom plate, a protrusion, a groove and an exhaust hole. An exhaust hole is provided in the groove on the top of the protrusion. A multiple exhaust holes are provided at the connection between the bottom plate and the protrusion to increase the local exhaust area.
By increasing the local exhaust area, the problem of poor exhaust in the bridge shell core box is solved, the stable and reliable production of the sand core is ensured, and the quality of the castings is improved.
Smart Images
Figure CN223043594U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of core manufacturing, in particular to a die structure for disassembling and exhausting inserts at the position of the cold box bridge hole. Background Art
[0002] In casting production, cores are generally used. The functions of the cores are as follows: forming the inner cavity and holes of the casting. For some inner cavities with complex shapes, cores must be used to form them, which is an extremely important function of the cores; forming the outer shape of the casting. For castings with complex outer shapes, such as those with many bosses and bumps that hinder mold removal and are not easy to disassemble loose pieces, as well as those with complex curved surface shapes, when it is difficult to make the outer mold, cores are often used to form the outer shape of the casting. Strengthening the strength of the local sand mold. When casting medium and large-sized castings, the sprue is generally very high, the scouring force of the metal is very large, and the scouring time for the same place is also relatively long. The cores in these places are often washed out due to insufficient strength. Therefore, in order to ensure the quality of the casting and prevent defects such as scouring, high-strength core blocks are often embedded in places with strong scouring force.
[0003] The core of the axle housing is used to form the inner cavity of the axle housing during the casting process. There is a relatively high shape protrusion in the core of the axle housing, which is a difficult part in core making. Defects such as incomplete sand shooting and poor exhaust are likely to occur in this part of the core. The cold box is located at a local deepest position in the inner cavity of the core box. The characteristics of the deepest position of the core box are that it is not conducive to mold processing, exhaust, and the formation of the core.
[0004] Therefore, we propose a die structure for disassembling and exhausting inserts at the position of the cold box bridge hole. Content of the Utility Model
[0005] The applicant of the present utility model aims at the above-mentioned shortcomings in the existing production technology and provides a die structure for disassembling and exhausting inserts at the position of the cold box bridge hole, thereby increasing the local exhaust area and enabling the axle housing core box to stably and reliably produce qualified cores.
[0006] The technical solution adopted by the present utility model is as follows:
[0007] A die structure for disassembling and exhausting inserts at the position of the cold box bridge hole, comprising:
[0008] An exhaust insert, which is arranged at the cold box of the axle housing core box. The exhaust insert includes a bottom plate and a protrusion integrally formed. A groove is provided at the top of the protrusion, and exhaust holes are provided in the groove;
[0009] Wherein, a plurality of exhaust holes three are provided at the connection between the bottom plate and the protrusion. One side of the exhaust hole three passes through the bottom plate, and the other side of the exhaust hole three passes through the protrusion. An exhaust groove corresponding to and communicating with the exhaust hole three is provided at the top of the protrusion for increasing the local exhaust area.
[0010] It is further characterized in that:
[0011] Both the exhaust holes III and the exhaust grooves are provided with eight, and the exhaust grooves and the exhaust holes III are arranged in one-to-one correspondence.
[0012] The exhaust insert is detachably connected to the flange of the cold box of the axle housing core box by bolts.
[0013] The exhaust holes include exhaust hole I and exhaust hole II. Exhaust hole I is arranged at the center of the groove, and there are multiple exhaust holes II which are arranged outside exhaust hole I.
[0014] Six exhaust holes II are provided, and the six exhaust holes II are arranged in a circular array.
[0015] The depth of the exhaust groove is 0.15 mm. After the exhaust insert is installed, the exhaust groove becomes the exhaust channel, which is beneficial to the smooth exhaust of this part, so as to stably obtain a qualified axle housing core.
[0016] The beneficial effects of the present utility model are as follows:
[0017] The structure of the present utility model is compact and reasonable, and it is convenient to operate. The exhaust insert is made at the deepest part of the axle housing core box, increasing the local exhaust area, so that the axle housing core box can stably and reliably produce qualified cores. The exhaust groove is an exhaust surface with a depth of 0.15 mm. After the exhaust insert is installed from the bottom surface, the 8 places with a depth of 0.15 mm become the exhaust channels, which is beneficial to the smooth exhaust of this part, so as to stably obtain a qualified axle housing core. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the axle housing core box and the axle housing core of the present utility model.
[0019] Figure 2 It is a schematic diagram of the axle housing core of the present utility model.
[0020] Figure 3 It is a schematic diagram of the exhaust insert of the present utility model.
[0021] Figure 4 is Figure 3 The enlarged schematic diagram at position A in
[0022] Figure 5 is Figure 3 The top view of
[0023] Figure 6 is Figure 3 The bottom view of
[0024] Wherein: 1. Exhaust insert; 101. Bottom plate; 102. Protrusion; 103. Groove; 104. First exhaust hole; 105. Second exhaust hole; 106. Exhaust groove; 107. Third exhaust hole; 2. Axle housing core box; 3. Axle housing core sand. Specific embodiments
[0025] The following combines with the attached drawings to illustrate the specific embodiments of the present utility model.
[0026] As Figures 1-6 shown, a mold structure for removing an exhaust insert at the cold core box bridge hole position includes an exhaust insert 1. The exhaust insert 1 is arranged at the cold core box of the axle housing core box 2, and the flange of the exhaust insert 1 and the cold core box of the axle housing core box 2 is detachably connected by bolts.
[0027] The exhaust insert 1 includes a bottom plate 101 and a protrusion 102. The protrusion 102 is arranged at the top center of the bottom plate 101. The protrusion 102 and the bottom plate 101 are integrally formed. There is a groove 103 at the top of the protrusion 102. There is a first exhaust hole 104 at the center of the groove 103. There are multiple second exhaust holes 105 arranged outside the first exhaust hole 104 in the groove 103. There is an exhaust hole in the groove 103, and the exhaust hole includes the first exhaust hole 104 and the second exhaust hole 105.
[0028] Specifically, there are six second exhaust holes 105, and the six second exhaust holes 105 are arranged in a circular array.
[0029] The third exhaust hole 107 is arranged at the junction of the bottom plate 101 and the protrusion 102. One side of the third exhaust hole 107 passes through the bottom plate 101, and the other side of the third exhaust hole 107 passes through the protrusion 102. There is an exhaust groove 106 at the top of the protrusion 102. The exhaust groove 106 is communicated with the third exhaust hole 107 for exhausting gas, which can increase the local exhaust area and enable the axle housing core box 2 to stably and reliably produce qualified axle housing core sand 3.
[0030] Specifically, there are eight third exhaust holes 107 and eight exhaust grooves 106, and the exhaust grooves 106 and the third exhaust holes 107 are arranged in one-to-one correspondence.
[0031] The depth of the exhaust groove 106 is 0.15 mm. After the exhaust insert 1 is installed from the bottom surface, the exhaust groove 106 becomes the exhaust channel, which is beneficial to the smooth exhaust of this part and enables the qualified axle housing core sand 3 to be stably obtained.
[0032] The above description is an explanation of the present utility model, not a limitation of the utility model. The scope defined by the present utility model can be seen in the claims. Within the protection scope of the present utility model, any form of modification can be made.
Claims
1. A mold structure for removing the exhaust insert at the bridge hole position of a cold core box, characterized in that: include: An exhaust insert (1) is arranged at a cold core box of a bridge housing core box (2), the exhaust insert (1) comprising an integrally formed bottom plate (101) and a protrusion (102), a groove (103) is arranged at the top of the protrusion (102), and an exhaust hole is arranged in the groove (103); A plurality of exhaust holes (107) are provided at the connection between the bottom plate (101) and the protrusion (102), one side of the exhaust hole (107) passes through the bottom plate (101), and the other side of the exhaust hole (107) passes through the protrusion (102), and an exhaust groove (106) corresponding to and connected to the exhaust hole (107) is provided at the top of the protrusion (102) to increase the local exhaust area.
2. A mold structure for removing the exhaust insert at the cold box bridge hole position as claimed in claim 1, characterized in that: The exhaust holes three (107) and the exhaust grooves (106) are each provided in eight numbers, and the exhaust grooves (106) and the exhaust holes three (107) are provided in a one-to-one correspondence.
3. A mold structure for removing the exhaust insert at the bridge hole position of a cold box as claimed in claim 1, characterized in that: The exhaust insert (1) is detachably connected to the flange of the cold core box of the axle housing core box (2) via bolts.
4. A mold structure for removing the exhaust insert at the bridge hole position of a cold box as claimed in claim 2, characterized in that: The exhaust holes include exhaust hole one (104) and exhaust hole two (105). Exhaust hole one (104) is arranged at the center of the groove (103), and a plurality of exhaust holes two (105) are arranged outside exhaust hole one (104).
5. A mold structure for removing the exhaust insert at the bridge hole position of a cold box as claimed in claim 4, characterized in that: The number of the second exhaust holes (105) is six, and the six second exhaust holes (105) are arranged in a circular array.
6. A mold structure for removing the exhaust insert at the cold box bridge hole position as claimed in claim 2, characterized in that: The depth of the exhaust groove (106) is 0.15 mm. After the exhaust insert (1) is installed, the exhaust groove (106) becomes an exhaust passage, which is conducive to smooth exhaust at this position, so as to stably obtain a qualified bridge housing sand core (3).