Blind riser structure for tail plate hinge lug
By introducing guide ribs and a stress-bearing plane into the concealed riser structure, the accuracy and efficiency issues of concealed riser cutting and knocking off were solved, enabling efficient and accurate cutting and stable knocking off of the hinge lugs, thus improving production efficiency.
Patent Information
- Application Number
- CN202520131878.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-20
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2035-01-20
AI Technical Summary
During the casting process, cutting and removing the hidden riser is difficult and inefficient, easily damages the reamer, and the hammer strikes are unstable, affecting production efficiency.
Design a concealed riser structure, including a cross-cut guide section and a bevel guide section. The guide rib guides the saw blade cutting, and the protrusion provides a force-bearing plane to stabilize the hammer strike, ensuring the accuracy and efficiency of the saw blade and hammer operation.
It improves the cutting accuracy and efficiency of concealed risers, avoids saw disc offset, ensures the integrity of the hinge surface, and improves the stability and speed of hammering out concealed risers.
Smart Images
Figure CN223718254U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of casting, especially relates to a dark riser structure for tail plate hinge lug. BACKGROUND
[0002] The castings of tail plates are formed by furan resin sand mold casting. The tail plates are designed with hinge lugs on both sides, which are used to pull the second plate of a model equipment (such as an injection molding machine or a die casting machine) and need to bear a large pulling force, so the quality of the hinge lugs is extremely important. During the casting process of the castings, the hinge lugs are relatively high in position, but not the highest point of the tail plates. In order to avoid casting defects such as shrinkage holes and slag inclusions in the hinge lugs, a dark riser is arranged at the top of the hinge lugs. The dark riser can vent and collect slag, and also plays a role in feeding the hinge lugs. After the casting is completed, a cutout needs to be cut out above the connection between the bottom of the dark riser and the hinge lug by a saw disc, so as to cut off the dark riser, or the dark riser is knocked off from the hinge lug in the cutting process with a hammer, and then the remaining part of the dark riser on the hinge lug is polished. However, since the outer side wall of the dark riser is relatively flat, the saw disc operated by a person is easy to deviate and cut into the hinge lug during cutting, resulting in scratches on the surface of the hinge lug, and the cutting efficiency and cutting precision are poor. In addition, since the outer surface of the dark riser is a curved surface, when the hammer head is used to hit the side wall of the dark riser, the hammer head is also easy to slip on the outer surface of the dark riser and deviate to one side, so that the knocking force of the hammer cannot completely act on the dark riser, and the dark riser is difficult to be knocked off. CONTENT OF THE UTILITY MODEL
[0003] The utility model aims at providing a dark riser structure for a tail plate hinge lug, which plays a guiding role on the moving path of the saw disc when the saw disc is cut, so as to avoid the saw disc from cutting into the hinge lug.
[0004] To achieve the above-mentioned purpose, the utility model provides a dark riser structure for a tail plate hinge lug, which comprises a dark riser main body provided with an inner cavity, an upper concave curved surface adapted to the cylindrical surface at the top of the hinge lug is arranged at the lower end of the dark riser main body, a horizontal cutout guide part is arranged on the outer side wall of the dark riser main body, and the horizontal cutout guide part is slightly higher than the highest part of the upper concave curved surface; an inclined cutout guide part is also arranged on the outer side wall of the dark riser main body, the inclined cutout guide part is arranged obliquely between the lowest part of the upper concave curved surface and the horizontal cutout guide part, and the horizontal cutout guide part and the inclined cutout guide part are both protruded from the outer side wall of the dark riser main body.
[0005] As a further improvement of the utility model, the horizontal cutout guide part comprises a first guide protruding rib and a second guide protruding rib which are parallel to each other, the first guide protruding rib and the second guide protruding rib are both arranged in a ring shape around the outer side wall of the dark riser main body, and the first guide protruding rib is located above the second guide protruding rib.
[0006] As a further improvement of the present application, the oblique cut guiding part comprises a third guiding protrusion and a fourth guiding protrusion, both of which are arranged obliquely, the third guiding protrusion is located above the fourth guiding protrusion, both of the third guiding protrusion and the fourth guiding protrusion are arranged around the outer side wall of the blind riser body, and both ends of the third guiding protrusion and the fourth guiding protrusion are connected with the lower edge of the second guiding protrusion.
[0007] As a further improvement of the present application, the lowest part of the fourth guiding protrusion is a slope, and the included angle between the slope and the cylindrical surface of the blind riser body at the position of the fourth guiding protrusion is obtuse.
[0008] As a further improvement of the present application, the oblique cut guiding part is two and is arranged symmetrically with respect to the center line of the blind riser body.
[0009] As a further improvement of the present application, the outer side wall of the blind riser body is provided with a protruding block, and the protruding block is provided with a stress plane matched with a hammer.
[0010] Advantages
[0011] Compared with the prior art, the blind riser structure for the tail plate hinge lug has the following advantages:
[0012] 1. When the blind riser body needs to be cut off from the hinge lug, a personnel operates a saw disc to cut along the transverse cut guiding part first, cuts off the upper half of the blind riser body, then operates the saw disc to cut along the oblique cut guiding part, so that the structure of the blind riser body can be basically cut off from the hinge lug, and the remaining part can be removed by polishing finally. During the saw disc cutting process, the transverse cut guiding part and the oblique cut guiding part not only can play a guiding role, but also can be seen by the personnel directly due to the protrusion from the outer side wall of the blind riser body, so that whether the moving route of the saw disc is deviated or not can be judged clearly, the personnel can adjust in time, and the accuracy of the saw disc cutting and the cutting efficiency are improved.
[0013] 2. The transverse cut guiding part and the oblique cut guiding part both adopt two guiding protrusions, and the saw disc moves between the two guiding protrusions, so that the saw disc can be cut too much or too little.
[0014] 3. The lowest part of the fourth guiding protrusion is a slope, and the included angle between the slope and the cylindrical surface of the blind riser body at the position of the fourth guiding protrusion is obtuse, so that the saw disc can be directly slid into the space between the third guiding protrusion and the fourth guiding protrusion along the slope and then cut.
[0015] 4. The protruding block on the outer side wall of the blind riser body is provided with a stress plane, and when the stress plane is struck by a hammer, the hammer is not easy to deviate, the impact force is basically applied to the blind riser body, the blind riser can be knocked off faster, and the production efficiency is improved.
[0016] The present application will become more apparent from the following description when taken in conjunction with the accompanying drawings, which together with this description, illustrate the embodiments of the present application. BRIEF DESCRIPTION OF DRAWINGS
[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following briefly introduces the accompanying drawings that need to be used in the embodiments or prior art description. Obviously, the accompanying drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained based on these accompanying drawings without creative effort.
[0018] Figure 1 is a perspective view of the hinge lug for the tail plate;
[0019] Figure 2 is a front view of the positions of the hidden riser structure and the hinge lug;
[0020] Figure 3 is a front view of the hidden riser structure for the hinge lug of the tail plate;
[0021] Figure 4 is a front view of the hidden riser structure for the hinge lug of the tail plate arranged at the top of the hinge lug;
[0022] Figure 5 is a half sectional view of the hidden riser structure for the hinge lug of the tail plate;
[0023] Figure 6 is a side view of the hidden riser structure for the hinge lug of the tail plate arranged at the top of the hinge lug;
[0024] Figure 7 is a schematic view of the transverse cut of the hidden riser body;
[0025] Figure 8 is a schematic view of the direction of the saw disc cutting along the inclined cut guide part;
[0026] Figure 9 is a schematic view of the inclined cut of the hidden riser body after being basically cut off. DETAILED DESCRIPTION
[0027] The embodiments of the present application will now be described with reference to the accompanying drawings.
[0028] EMBODIMENT
[0029] The specific implementation of the present application is as follows Figures 1 to 9As shown, a structure of a hidden sprue for a tail plate hinge lug, comprising a hidden sprue body 1 provided with an inner cavity 11, the outer side wall of the hidden sprue body 1 is arc-shaped, the lower end of the hidden sprue body 1 is provided with an upper concave arc surface 2 for matching the cylindrical surface of the top of the hinge lug 8, the outer side wall of the hidden sprue body 1 is provided with a horizontal transverse cut guiding part 3, the transverse cut guiding part 3 is slightly higher than the highest part of the upper concave arc surface 2. The outer side wall of the hidden sprue body 1 is also provided with an obliquely arranged oblique cut guiding part 4, the oblique cut guiding part 4 is located between the lowest part of the upper concave arc surface 2 and the transverse cut guiding part 3, and the transverse cut guiding part 3 and the oblique cut guiding part 4 are both protruding from the outer side wall of the hidden sprue body 1.
[0030] In this embodiment, the transverse cut guiding part 3 comprises a first guiding convex rib 31 and a second guiding convex rib 32 which are parallel, both of which are arranged in a ring shape around the outer side wall of the hidden sprue body 1, and the first guiding convex rib 31 is located above the second guiding convex rib 32.
[0031] The oblique cut guiding part 4 is two and is arranged symmetrically left and right relative to the center line of the hidden sprue body 1.
[0032] The oblique cut guiding part 4 comprises a third guiding convex rib 41 and a fourth guiding convex rib 42 which are both obliquely arranged, the third guiding convex rib 41 is located above the fourth guiding convex rib 42, both of which are arranged around the outer side wall of the hidden sprue body 1, and both ends of both are connected with the lower edge of the second guiding convex rib 32.
[0033] The lowest part of the fourth guiding convex rib 42 is a bevel 43, and the included angle between the bevel 43 and the cylindrical surface of the hidden sprue body 1 at the position is obtuse.
[0034] The outer side wall of the hidden sprue body 1 is provided with a protruding block 7, and the protruding block 7 is provided with a stress plane 71 matched with a hammer 10. In this embodiment, two protruding blocks 7 can be provided on the outer side wall of the hidden sprue body 1.
[0035] After the tail plate is cast, the upper concave arc surface 2 at the bottom of the hidden sprue body 1 and the cylindrical surface at the top of the hinge lug 8 are fixedly connected with each other at this time. Personnel operate the saw disc 9, move it between the first guiding convex rib 31 and the second guiding convex rib 32 and cut the side wall of the hidden sprue body 1, forming a transverse cut 5, as shown. Figure 7 When the last remaining part is cut, the upper half of the hidden sprue body 1 can be knocked down by vertically knocking the stress plane 71 with the hammer 10 at this time, and the residual part of the hidden sprue body 1 is as shown. Figure 8 Then let the saw disc 9 move between the third guiding convex rib 41 and the fourth guiding convex rib 42 for cutting, forming an oblique cut 6, as shown. Figure 9The part of the dark riser body 1 finally remaining on the top of the lug 8 can be ground flat by a grinding tool.
[0036] During the saw disc cutting process, the transverse cut guiding part 3 and the oblique cut guiding part 4 not only can play a guiding role, but also can be seen by personnel due to the protrusion of the two from the outer side wall of the dark riser body 1, so that the relative position of the guiding part and the saw disc 9 can be directly observed, and whether the moving route of the saw disc 9 is deviated can be clearly judged, so that personnel can be facilitated to timely adjust, thereby ensuring the cutting accuracy of the saw disc 9 and improving the cutting efficiency.
[0037] The utility model has been described above in combination with the best embodiment, but the utility model is not limited to the above disclosed embodiments, and should cover various modifications, equivalent combinations according to the essence of the utility model.
Claims
1. A blind riser structure for tailing lug, comprising a blind riser body (1) provided with an inner cavity (11), characterized in that, The lower end of the dark riser body (1) is provided with an upper concave arc surface (2) for adapting to the cylindrical surface of the top of the lug (8), the outer side wall of the dark riser body (1) is provided with a horizontally arranged transverse incision guide portion (3), the transverse incision guide portion (3) is slightly higher than the highest part of the upper concave arc surface (2); The outer side wall of the dark riser body (1) is also provided with an obliquely arranged oblique incision guide portion (4), the oblique incision guide portion (4) is located between the lowest part of the upper concave arc surface (2) and the transverse incision guide portion (3), and the transverse incision guide portion (3) and the oblique incision guide portion (4) are both protruding from the outer side wall of the dark riser body (1).
2. A blind riser structure for tailing board hinge lug as claimed in claim 1 wherein, The transverse incision guide portion (3) comprises first and second guide convex ribs (31) and (32) which are parallel to each other, the first and second guide convex ribs (31) and (32) are both arranged in a ring shape around the outer side wall of the dark riser body (1), and the first guide convex rib (31) is located above the second guide convex rib (32).
3. A submerged riser structure for tailing plate hinge lug as claimed in claim 2 wherein, The oblique incision guide portion (4) comprises third and fourth guide convex ribs (41) and (42) which are both obliquely arranged, the third guide convex rib (41) is located above the fourth guide convex rib (42), and the third and fourth guide convex ribs (41) and (42) are both arranged around the outer side wall of the dark riser body (1), and both ends of the third and fourth guide convex ribs (41) and (42) are connected with the lower edge of the second guide convex rib (32).
4. A submerged riser structure for tailpiece hinge lug according to claim 3, wherein, The lowest part of the fourth guide convex rib (42) is a bevel (43), and the included angle between the bevel (43) and the cylindrical surface of the dark riser body (1) at the position is obtuse.
5. A submerged riser structure for tailing plate hinge lug as claimed in any one of claims 1 to 4, wherein, The oblique incision guide portion (4) is two and is symmetrically arranged with respect to the center line of the dark riser body (1).
6. A submerged riser structure for tailing plate hinge lug as claimed in claim 1 wherein, The outer side wall of the dark riser body (1) is provided with a protruding block (7), and the protruding block (7) is provided with a stress plane (71) adapted to a hammer (10).