Forming device of funnel type riser bush

Abstract

The utility model relates to a funnel type riser bush forming device which comprises a forming die, a plurality of forming female dies are formed on the upper end face of the forming die, an inclined scraping air cylinder is arranged on one side of the forming die, and a piston rod of the scraping air cylinder is fixedly connected with a scraping plate assembly opposite to the upper end face of the forming die. The scraper blade assembly comprises a scraper blade with a triangular section, a triangular weight reduction groove is formed in the middle of the scraper blade, open grooves opposite to the weight reduction groove are formed in the lower surfaces of the two sides of the scraper blade, inclined connecting rods are inserted into the open grooves, the lower ends, extending out of the lower surface of the scraper blade, of the connecting rods are pivoted with guide wheels, and the upper ends of the connecting rods are inserted into the weight reduction groove and fixed to the two ends of a connecting shaft in an inserted and sleeved mode. The connecting shaft is inserted into the weight reduction groove and sleeved with a connecting protruding block in an inserted mode, and the connecting protruding block is formed on the inner side wall of the middle of the weight reduction groove. The scraping structure on the forming device only carries out one-time sliding friction, when the scraping plate resets, friction between the scraping plate and the forming die is rolling friction, and abrasion between the forming die and the scraping plate can be reduced.

Description

Technical field:

[0001] The utility model relates to the technical field of a riser sleeve forming device, in particular to a funnel-shaped riser sleeve forming device. Background technology:

[0002] Riser refers to the supplementary part added to the top or side of the casting to avoid defects in the casting. Functionally, in the casting mold, the cavity of the riser is a cavity for storing liquid metal. It supplies metal when the casting is formed, and has the function of preventing shrinkage cavities, shrinkage, exhaust and slag collection. The main function of the riser is to compensate for shrinkage, and the riser is also commonly called a riser sleeve. At present, the riser sleeve is mainly formed by casting, that is, the casting liquid of the riser sleeve is injected into the molding groove of the molding mold. When the casting liquid is solidified and taken out, it becomes a riser sleeve. The existing funnel-type riser sleeve molding equipment is provided with a molding mold that can be lifted and moved. The molding mold can be moved down into the casting pool to realize the casting liquid entering the molding groove of the molding mold, and then moved up to the top of the casting pool. After the casting liquid is solidified, the molding mold is flipped upside down, and the solidified riser sleeve can fall from the molding groove to the movable receiving plate;

[0003] When the forming mold is moved out of the casting pool, a scraper is needed to scrape off the casting residual liquid on the upper end surface of the forming mold. The scraper is installed on the piston rod of the inclined cylinder through an articulated bracket. The cylinder is started to drive the scraper to move obliquely. At the same time, a torsion spring limiter is provided between the scraper and the articulated bracket. Therefore, during the scraping process, the scraper can rotate, but its lower side will be elastically pressed on the upper end surface of the forming mold under the action of the torsion spring. At the same time, when the scraper is reset, the lower side of the scraper is also elastically pressed on the upper end surface of the forming mold to move; therefore, one scraping process will generate two sliding frictions, which will lead to serious wear of the forming mold and the scraper, so its structure is modified to reduce the wear between the forming mold and the scraper. Utility model content:

[0004] The purpose of the utility model is to address the deficiencies of the prior art and to provide a funnel-shaped riser sleeve molding device, in which the scraper structure on the molding device performs only one sliding friction, and when the scraper is reset, the friction between the molding die and the scraper is rolling friction, which can reduce the wear between the molding die and the scraper and increase the service life of the molding die and the scraper.

[0005] A forming device for a funnel-shaped riser sleeve comprises a forming die, a plurality of forming concave dies are formed on the upper end surface of the forming die, an inclined scraper cylinder is arranged on one side of the forming die, a scraper assembly opposite to the upper end surface of the forming die is fixedly connected to the piston rod of the scraper cylinder, the scraper assembly comprises a scraper with a triangular cross section, a scraper strip with a conical cross section is formed at the lower end of the scraper, the upper part is inserted in an A-shaped hinge bracket and is inserted with a hinge shaft, the two ends of the hinge shaft pass through the hinge bracket and are fixedly connected to the limiting sleeve, and the side walls on both sides of the scraper are connected to the Torsion springs are respectively inserted and sleeved on the hinge shafts between the hinged brackets, one end of the torsion spring is inserted on the scraper and the other end is inserted on the hinged bracket; a triangular weight-reducing groove is formed in the middle of the scraper, and slots opposite to the weight-reducing groove are formed on the lower surfaces of both sides of the scraper, and inclined connecting rods are inserted in the slots. The lower end of the connecting rod extends out of the lower surface of the scraper and is pivotally connected to a guide wheel, and the upper end is inserted in the weight-reducing groove and sleeved and fixed at both ends of the connecting shaft, the connecting shaft is inserted in the weight-reducing groove and sleeved with a connecting protrusion, and the connecting protrusion is formed on the inner side wall of the middle part of the weight-reducing groove.

[0006] Preferably, the groove on the scraper is V-shaped, and both side walls of the groove are inclined planes.

[0007] Preferably, the lower side edge of the scraper strip on the scraper assembly abuts against the upper end surface of the forming mold, and the guide wheel abuts against the upper end surfaces of the two side edges of the forming mold.

[0008] Preferably, the guide wheel is formed with a support shaft, and a circular ring-shaped counterweight block is formed on the side wall of the lower end of the connecting rod. The support shaft passes through the connecting rod and is connected to the counterweight block through a bearing.

[0009] Preferably, the upper and lower ends of the connecting rod are both arc-shaped, and the arc radius of the lower end of the connecting rod and the arc radius of the outer wall of the counterweight block are respectively smaller than the arc radius of the outer wall of the guide wheel.

[0010] Preferably, the molding die is rectangular, the molding concave mold on the molding die is in the shape of an inverted truncated cone, and the molding concave mold array is distributed on the molding die.

[0011] Preferably, the length of the scraper is greater than the width of the forming mold.

[0012] The beneficial effects of the utility model are:

[0013] The scraper structure on the molding device only performs sliding friction once. When the scraper is reset, the friction between the molding die and the scraper is rolling friction, which can reduce the wear between the molding die and the scraper and increase the service life of the molding die and the scraper. Description of the drawings:

[0014] Figure 1 This is a schematic diagram of the structure of the utility model when scraping materials;

[0015] Figure 2 for Figure 1 A local enlarged schematic diagram of the middle A;

[0016] Figure 3 It is a schematic diagram of the structure of the utility model when it is reset;

[0017] Figure 4 for Figure 3 A partial enlarged schematic diagram of point B in the middle;

[0018] Figure 5 It is a rear view schematic diagram of the inner scraper part of the utility model;

[0019] In the figure: 1. forming mold; 2. scraper cylinder; 3. scraper assembly; 31. scraper; 32. articulated shaft; 33. articulated bracket; 34. limit sleeve; 35. torsion spring; 36. connecting shaft; 37. connecting rod; 38. guide wheel. Specific implementation method:

[0020] Example: See Figures 1 to 5 As shown, a forming device for a funnel-shaped riser sleeve comprises a forming mold 1, a plurality of forming concave molds are formed on the upper end surface of the forming mold 1, an inclined scraper cylinder 2 is provided on one side of the forming mold 1, a scraper assembly 3 opposite to the upper end surface of the forming mold 1 is fixedly connected to the piston rod of the scraper cylinder 2, the scraper cylinder 2 and the forming mold 1 are both installed on a forming device for the riser, wherein the forming mold 1 is arranged on a hanger and can be moved up and down and turned over, the scraper cylinder 2 is fixed on the forming device, a casting pool is provided at the lower part of the forming device, the forming mold 1 moves down into the casting pool, and the casting liquid of the riser sleeve in the casting pool enters the forming concave mold of the forming mold 1, and then the upper surface of the forming mold 1 is scraped by the scraper assembly 3 to remove excess casting liquid of the riser sleeve, and when the riser sleeve is solidified, the forming mold 1 is driven to turn upside down, and the riser sleeve can be detached and fall onto a movable receiving tray by knocking the forming mold 1;

[0021] The scraper assembly 3 includes a scraper 31 with a triangular cross section, a scraper strip 311 with a conical cross section is formed at the lower end of the scraper 31, and the upper part is inserted into an A-shaped hinge bracket 33 and is inserted with a hinge shaft 32. Both ends of the hinge shaft 32 pass through the hinge bracket 33 and are fixedly connected with a limiting sleeve 34. Torsion springs 35 are respectively inserted on the hinge shaft 32 between the side walls of the scraper 31 and the hinge bracket 33. One end of the torsion spring 35 is inserted on the scraper 31 and the other end is inserted on the hinge bracket 33. A triangular weight-reducing groove 312 is formed in the middle, and slots 314 opposite to the weight-reducing groove 312 are formed on the lower surfaces of both sides of the scraper 31. An inclined connecting rod 37 is inserted in the slot 314. The lower end of the connecting rod 37 extends out of the lower surface of the scraper 31 and is pivotally connected to a guide wheel 38, and the upper end is inserted in the weight-reducing groove 312 and is fixed on both ends of the connecting shaft 36. The connecting shaft 36 is inserted in the weight-reducing groove 312 and is inserted with a connecting protrusion 313. The connecting protrusion 313 is formed on the inner side wall in the middle of the weight-reducing groove 312.

[0022] The slot 314 on the scraper 31 is V-shaped, and both side walls of the slot 314 are inclined planes.

[0023] The lower side of the scraper strip 311 on the scraper assembly 3 abuts against the upper end surface of the forming mold 1 , and the guide wheel 38 abuts against the upper end surfaces of both sides of the forming mold 1 .

[0024] The guide wheel 38 is formed with a support shaft 381, and a circular ring-shaped counterweight block 371 is formed on the side wall of the lower end of the connecting rod 37. The support shaft 381 passes through the connecting rod 37 and is connected to the counterweight block 371 through a bearing.

[0025] The upper and lower ends of the connecting rod 37 are both arc-shaped, and the arc radius of the lower end of the connecting rod 37 and the arc radius of the outer wall of the counterweight block 371 are respectively smaller than the arc radius of the outer wall of the guide wheel 38.

[0026] The molding die 1 is rectangular, and the molding concave mold on the molding die 1 is in the shape of an inverted truncated cone, which can form a conical or funnel-shaped riser sleeve; the molding concave mold array is distributed on the molding die 1.

[0027] The length of the scraper 31 is greater than the width of the molding die 1 .

[0028] Working principle: The utility model is a forming device for a funnel-shaped riser sleeve. The main structure of the forming device is reflected in the scraping structure. Figures 1 to 4 Description of the scraping process:

[0029] When the scraper 31 is scraping, the scraper strip 311 on the scraper 31 will be elastically pressed on the upper end surface of the forming mold 1. As the piston rod on the scraper cylinder 2 continues to extend, the scraper strip 311 moves on the upper end surface of the forming mold 1 and penetrates the casting residual liquid on its surface. The guide wheel 38 is pressed against both sides of the upper end surface of the forming mold 1 by the action of gravity, and does not contact the forming die and does not participate in scraping. Figure 1 , 2 As shown;

[0030] When the scraper 31 finishes scraping, it moves to the right side of the forming mold 1 and prepares to move leftward for resetting. When the scraper 31 is resetting and moving leftward, its guide wheel 38 first contacts the forming mold 1 and drives the connecting rod 37 to rotate. When the connecting rod 37 abuts against the lower side wall of the slot 314 on the scraper 31, in order to pass over the forming mold 1, the connecting rod 37 needs to continue to rotate, and then the connecting rod 37 will drive the scraper 31 to rotate upward around the hinge shaft 32, so that the scraper strip 3111 moves upward. Figure 3 , 4 As shown, during the leftward movement of the scraper 31, the guide wheel 38 abuts against the forming mold 1, so that the scraper strip 3111 is lifted and separated from the forming mold 1; therefore, when the scraper 31 is reset, there is rolling friction with the forming mold 1;

[0031] Therefore, during the scraping process, there is only one sliding friction, which can reduce the wear between the molding die and the scraper.

[0032] The embodiments are used to illustrate the present invention, but not to limit the present invention. Any person skilled in the art may modify the embodiments without violating the spirit and scope of the present invention, and therefore the scope of protection of the present invention shall be as set forth in the claims of the present invention.

Claims

1. A forming device for a funnel-shaped riser sleeve, comprising a forming mold (1), a plurality of forming concave molds formed on the upper end surface of the forming mold (1), an inclined scraper cylinder (2) is provided on one side of the forming mold (1), a scraper assembly (3) opposite to the upper end surface of the forming mold (1) is fixedly connected to the piston rod of the scraper cylinder (2), the scraper assembly (3) comprising a scraper (31) with a triangular cross section, and a scraper strip with a conical cross section formed on the lower end of the scraper (31) (311), the upper part is inserted into the A-shaped hinge bracket (33) and is inserted with a hinge shaft (32), both ends of the hinge shaft (32) pass through the hinge bracket (33) and are fixedly connected with a limiting sleeve (34), and a torsion spring (35) is respectively inserted on the hinge shaft (32) between the side walls of the scraper (31) and the hinge bracket (33), one end of the torsion spring (35) is inserted on the scraper (31), and the other end is inserted on the hinge bracket (33); it is characterized in that: A triangular weight-reducing groove (312) is formed in the middle of the scraper (31), and slots (314) opposite to the weight-reducing groove (312) are formed on the lower surfaces of both sides of the scraper (31), and an inclined connecting rod (37) is inserted in the slot (314). The lower end of the connecting rod (37) extends out of the lower surface of the scraper (31) and is pivotally connected to a guide wheel (38), and the upper end is inserted in the weight-reducing groove (312) and is fixed to the two ends of the connecting shaft (36). The connecting shaft (36) is inserted in the weight-reducing groove (312) and is inserted with a connecting protrusion (313), and the connecting protrusion (313) is formed on the inner side wall of the middle part of the weight-reducing groove (312).

2. A forming device for a funnel-shaped riser sleeve according to claim 1, characterized in that: The slot (314) on the scraper (31) is V-shaped, and both side walls of the slot (314) are inclined planes.

3. A forming device for a funnel-shaped riser sleeve according to claim 2, characterized in that: The lower side edge of the scraper strip (311) on the scraper assembly (3) abuts against the upper end surface of the forming mold (1), and the guide wheel (38) abuts against the upper end surfaces of both side edges of the forming mold (1).

4. A forming device for a funnel-shaped riser sleeve according to claim 3, characterized in that: The guide wheel (38) is formed with a support shaft (381), and a circular ring-shaped counterweight block (371) is formed on the side wall of the lower end of the connecting rod (37). The support shaft (381) passes through the connecting rod (37) and is connected to the counterweight block (371) through a bearing.

5. A forming device for a funnel-shaped riser sleeve according to claim 4, characterized in that: The upper and lower ends of the connecting rod (37) are both arc-shaped, and the arc radius of the lower end of the connecting rod (37) and the arc radius of the outer wall of the counterweight block (371) are respectively smaller than the arc radius of the outer wall of the guide wheel (38).

6. A funnel-shaped riser sleeve forming device according to claim 1, characterized in that: The molding die (1) is rectangular, the molding concave mold on the molding die (1) is in the shape of an inverted truncated cone, and the molding concave mold array is distributed on the molding die (1).

7. A forming device for a funnel-shaped riser sleeve according to claim 6, characterized in that: The length of the scraper (31) is greater than the width of the molding die (1).

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