Casting furnace applied to hardware casting

Abstract

The casting furnace comprises a furnace body of the casting furnace, a plurality of transversely-distributed furnace mouths are formed in the front side of the furnace body, electric heating assemblies are arranged on the rear sides of inner cavities of the furnace mouths, heat insulation layers are arranged in the inner cavities, between the furnace mouths, of the furnace body, and the heat insulation layers divide the inner cavities of the furnace mouths into a plurality of casting chambers. The rear end of the heat insulation layer is provided with an airflow circulation groove communicated with the adjacent casting chamber, the front side of the furnace body is provided with a plurality of furnace doors opposite to the furnace opening, and the lower sides of the furnace doors are hinged to the furnace body through hinge assemblies. Two groups of transverse handles are arranged at the front upper part of the top of the furnace door; a transverse door closing assembly opposite to the handles is fixedly connected to the furnace body on the upper side of the furnace door; a door stopper assembly is arranged in the middle of the furnace door. The casting furnace is internally provided with a plurality of casting chambers, each casting chamber is provided with an independent furnace opening and an independent furnace door, the opening and closing structures of the furnace doors can realize quick opening and closing of all the furnace doors, and any furnace door can be independently and quickly opened and closed.

Description

Technical field:

[0001] The invention relates to the technical field of casting furnaces, and more particularly to a casting furnace used for hardware casting. Background technology:

[0002] At present, some blanks of hardware products are obtained by casting. In the casting process, a casting furnace is needed. The metal parts are placed in a crucible, and then the crucible is placed in the casting furnace. The casting furnace heats the metal parts in the crucible to melt into molten metal. The molten metal is taken out of the casting furnace and poured into the mold. When the molten metal is cooled and solidified, the blanks of the hardware products can be obtained. The existing casting furnace is generally a single furnace mouth structure, and the diameter depth of the casting furnace can accommodate multiple crucibles working at the same time, but when taking out the crucibles, they need to be taken out from the furnace mouth one by one. When heating and melting different metals, it is more troublesome to put them into the casting furnace; so some people propose to open multiple furnace mouths for the casting furnace, and set the furnace mouth on the side wall of the casting furnace, so that the diameter depth of the casting furnace is suitable for a single crucible, but its width can accommodate multiple crucibles, and each crucible is provided with a relative inlet and outlet; and when multiple furnace mouths are opened, for the heating and melting of different metals or the same metal, each furnace mouth needs to be equipped with a separate furnace door, and the furnace door is required to be able to open and close quickly and independently; so it is necessary to design a casting furnace with the above requirements. Summary of the invention:

[0003] The purpose of the present invention is to address the deficiencies of the prior art and to provide a casting furnace for hardware casting, wherein a plurality of casting chambers are arranged in the casting furnace, each casting chamber having an independent furnace mouth and furnace door, and the opening and closing structure of the furnace door can realize the rapid opening and closing of all the furnace doors, and can also satisfy the rapid opening and closing of any furnace door independently.

[0004] A casting furnace used for hardware casting, comprising a furnace body of the casting furnace, a plurality of furnace openings distributed laterally are provided on the front side of the furnace body, an electric heating assembly is arranged on the rear side of the inner cavity of the furnace openings, a heat insulation layer is arranged on the inner cavity of the furnace body between the furnace openings, the heat insulation layer divides the inner cavity of the furnace openings into a plurality of casting chambers, an air flow flow groove connecting adjacent casting chambers is arranged on the rear end of the heat insulation layer, a plurality of furnace doors opposite to the furnace openings are arranged on the front side of the furnace body, the lower side of the furnace door is hinged to the furnace body through a hinge assembly; two groups of horizontal handles are arranged on the front upper side of the top of the furnace door, the handles include horizontal cylindrical handlebars, an arc-shaped handle rod is fixedly connected to the outer wall of the middle part of the handle rod, and the lower end of the handle rod is fixedly connected to the front end surface of the furnace door; a horizontal closing door assembly opposite to the handle is fixedly connected to the furnace body on the upper side of the furnace door;

[0005] The door closing assembly includes a transverse guide rail fixedly connected to the furnace body, a slider is inserted in the transverse guide rail, the front end of the slider extends out of the transverse guide rail and is formed with a transverse locking sleeve, and the right end of the handle is inserted in the locking sleeve; a transverse pull rod is fixedly connected to the slider, an outer wall of the left end of the pull rod is formed with an external thread and extends out of the furnace body and is screwed with a T-shaped internal thread sleeve, the internal thread sleeve is pivotally connected to an L-shaped positioning bracket, and the positioning bracket is fixed to the left side wall of the furnace body; the left end of the internal thread sleeve extends out of the positioning bracket and is fixedly connected with a hand wheel;

[0006] A door stopper assembly is provided in the middle of the furnace door, and the door stopper assembly includes a transverse guide shaft, and end blocks are respectively inserted and fixedly connected at both ends of the guide shaft, and the end blocks are fixedly connected to the furnace door. The guide shaft is inserted with an annular magnet block, and the magnet block is sucked on the end block at the left end of the guide shaft. A transverse steel wire rope is inserted and fixed on the magnet block, and the steel wire rope passes through the end block at the right end of the guide shaft and is inserted and fixed on the positioning ear seat, and the positioning ear seat is fixedly connected to the furnace body on the right side of the furnace mouth;

[0007] A buffer spring is fixedly connected to the end block at the right end of the guide shaft, and an annular baffle is fixedly connected to the left end of the buffer spring. Both the baffle and the buffer spring are inserted and sleeved on the guide shaft.

[0008] Preferably, the distance between any of the handles and the adjacent handles is greater than the length of the internal threaded sleeve on the door closing assembly, and the inner diameter of the internal threaded sleeve is equal to the diameter of the handle;

[0009] Both ends of the handle are formed with chamfers, and the mouth of the left end of the internal thread sleeve is formed with a conical expansion.

[0010] Preferably, the handles are evenly distributed linearly and laterally, and the internal threaded sleeves are evenly distributed linearly and laterally on the pull rod.

[0011] Preferably, the hinge assembly comprises a plurality of transverse bushings which are respectively fixed to the lower side of the furnace door, in which transverse hinge shafts are inserted, and a plurality of end seats are fixed to the hinge shafts via bushings, which are respectively fixed to the furnace body.

[0012] Preferably, the hinge shaft is located at the front lower part of the furnace door, and the outer wall of the shaft sleeve is flush with the lower end of the furnace body; the front end of the outer wall of the handle and the front end of the outer wall of the shaft sleeve are in the same vertical plane;

[0013] The center distance from the rear end face of the furnace door to the hinge axis is equal to the center distance from the lower bottom surface of the furnace body cavity to the hinge axis.

[0014] Preferably, the rear end face of the positioning bracket is fixedly connected with a triangular rib, and the rib is fixedly connected to the left side wall of the furnace body; the front end face of the left end of the positioning bracket extending out of the furnace body is formed with a transverse axial hole, and an internally threaded sleeve is inserted into the axial hole of the positioning bracket, and the handwheel adopts an insulating ceramic handwheel, and the hub at the center of the handwheel and the right end of the internally threaded sleeve respectively abut against the opposite side walls of the left end of the positioning bracket.

[0015] Preferably, the left end of the pull rod extends out of the internally threaded sleeve, and the length of the pull rod inside the internally threaded sleeve and extending out of the left end surface of the internally threaded sleeve is greater than the length of the locking sleeve.

[0016] Preferably, the width of the guide shaft is greater than the distance from the guide shaft to the lower end surface of the furnace body, and a gap is provided between the end block at the right end of the guide shaft and the positioning ear seat.

[0017] The beneficial effects of the present invention are:

[0018] The casting furnace is provided with a plurality of casting chambers, each of which has an independent furnace opening and furnace door, and the opening and closing structure of the furnace door can realize rapid opening and closing of all the furnace doors, and can also satisfy the requirement of rapid opening and closing of any furnace door independently. Description of the drawings:

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0020] Figure 2 It is a structural schematic diagram of the present invention;

[0021] Figure 3 It is a schematic diagram of the cross-sectional structure of the present invention in the side view direction;

[0022] Figure 4 It is a schematic diagram of the cross-sectional structure of the present invention in the top view direction.

[0023] In the figure: 1. furnace body; 2. furnace door; 3. thermal insulation layer; 4. hinge assembly; 5. handle; 6. door closing assembly; 7. door stopper assembly. Specific implementation method:

[0024] Example: See Figures 1 to 4As shown, a casting furnace used for hardware casting comprises a furnace body 1 of the casting furnace, a plurality of furnace openings 11 distributed transversely are provided on the front side of the furnace body 1, an electric heating assembly is arranged on the rear side of the inner cavity of the furnace openings 11, a heat insulation layer 3 is arranged on the inner cavity of the furnace body 1 between the furnace openings 11, the heat insulation layer 3 divides the inner cavity of the furnace openings 11 into a plurality of casting chambers b, an air flow flow groove a connecting the adjacent casting chambers b is arranged on the rear end of the heat insulation layer 3, a plurality of furnace doors 2 opposite to the furnace openings 11 are arranged on the front side of the furnace body 1, and the lower side of the furnace door 2 is hinged to the furnace body 1 through a hinge assembly 4; two groups of transverse handles 5 are arranged on the front upper side of the top of the furnace door 2, the handles 5 comprise transverse cylindrical handles 51, an arc-shaped handle rod 52 is fixedly connected to the outer wall of the middle part of the handle 51, and the lower end of the handle rod 52 is fixedly connected to the front end surface of the furnace door 2; a door closing assembly 6 opposite to the handle 5 is fixedly connected to the furnace body 1 on the upper side of the furnace door 2;

[0025] The door closing assembly 6 includes a transverse guide rail 61 fixedly connected to the furnace body 1, a slider 62 is inserted in the transverse guide rail 61, the front end of the slider 62 extends out of the transverse guide rail 61 and is formed with a transverse locking sleeve 621, and the right end of the handle 51 is inserted in the locking sleeve 621; a transverse pull rod 63 is fixedly connected to the slider 62, an outer wall of the left end of the pull rod 63 is formed with an external thread and extends out of the furnace body 1 and is screwed with a T-shaped internal thread sleeve 64, the internal thread sleeve 64 is pivotally connected to an L-shaped positioning bracket 65, and the positioning bracket 65 is fixed to the left side wall of the furnace body 1; the left end of the internal thread sleeve 64 extends out of the positioning bracket 65 and is sleeved and fixed with a hand wheel 66;

[0026] A door stopper assembly 7 is provided at the middle of the furnace door 2. The door stopper assembly 7 includes a transverse guide shaft 71. The two ends of the guide shaft 71 are respectively inserted and fixedly connected with end blocks 72. The end blocks 72 are fixedly connected to the furnace door 2. The guide shaft 71 is inserted and covered with an annular magnet block 73. The magnet block 73 is sucked on the end block 72 at the left end of the guide shaft 71. A transverse steel wire rope 74 is inserted and fixed on the magnet block 73. The steel wire rope 74 is in a tensioned state. The steel wire rope 74 passes through the end block 72 at the right end of the guide shaft 71 and is inserted and fixed on the positioning ear seat 75. The positioning ear seat 75 is fixedly connected to the furnace body 1 on the right side of the furnace mouth 11.

[0027] The locking cam 77 is pressed against the locking cam 74 at the rear of the locking cam 76, and the locking cam 78 is pressed against the support cam 74 to release the locking cam 76.

[0028] The distance between any of the handles 51 and the adjacent handles 51 is greater than the length of the internal threaded sleeve 64 on the door closing assembly 6, and the inner diameter of the internal threaded sleeve 64 is equal to the diameter of the handle 51; the internal threaded sleeve 64 needs to be moved out of the handle 51 to open the furnace door 2;

[0029] Both ends of the handle 51 are formed with chamfers, and the left end of the internal threaded sleeve 64 is formed with a conical expansion. The chamfers and the expansion make it easy for the handle 51 to enter the internal threaded sleeve 64.

[0030] The handle 5 is evenly distributed linearly and laterally, and the internal threaded sleeve 64 is evenly distributed linearly and laterally on the pull rod 63 , so moving the pull rod 63 can ensure that the internal threaded sleeve 64 is completely separated from the handle 51 .

[0031] The hinge assembly 4 includes a plurality of transverse sleeves 41, which are fixedly connected to the lower side of the furnace door 2, and a transverse hinge shaft 42 is inserted into the sleeves 41. A plurality of end seats 43 are fixedly connected to the hinge shaft 42, and the end seats 43 are fixedly connected to the furnace body 1.

[0032] The hinge shaft 42 is located at the front lower part of the furnace door 2, and the outer wall of the sleeve 41 is flush with the lower end of the furnace body 1; the front end of the outer wall of the handle 51 and the front end of the outer wall of the sleeve 41 are in the same vertical plane; the furnace body 1 includes an outer shell and an inner fireproof insulation layer, and the furnace door 2 includes a front panel and a rear fireproof insulation board. The height and width of the upper panel of the furnace door 2 are respectively greater than the height and width of the fireproof insulation board, and the width of the furnace mouth 11 on the furnace body 1 is equal to the width of the fireproof insulation board, and the height of the furnace mouth 11 is greater than the height of the fireproof insulation board. The lower end surface of the fireproof insulation board abuts against the lower bottom surface of the furnace mouth 11, and a gap is provided between the upper end surface and the upper bottom surface of the furnace mouth 11, so that the furnace door 2 can be opened by rotating.

[0033] The center distance from the rear end face of the furnace door 2 to the hinge shaft 42 is equal to the center distance from the lower bottom surface of the inner cavity of the furnace body 1 to the hinge shaft 42; due to this size limitation, when the furnace door 2 is opened horizontally, the rear end face of the furnace door 2 becomes a horizontal plane and is flush with the lower end face of the inner cavity of the furnace body 1, and the handle 5 becomes a footrest, thereby preventing the crucible in the furnace body 1 from being pulled out by pliers and translated onto the furnace door 2, and then the crucible (the crucible contains metal casting liquid) is removed from above the furnace door 2 by a lifting facility, so that there is no need to manually lift the crucible with pliers before taking it out, and the crucible is more convenient and labor-saving to enter and exit the casting furnace.

[0034] The rear end face of the positioning bracket 65 is fixedly connected with a triangular rib plate, and the rib plate is fixedly connected to the left side wall of the furnace body 1; the left end of the positioning bracket 65 extends out of the front end face of the furnace body 1 and is formed with a transverse axial hole, and the internally threaded sleeve 64 is inserted into the axial hole of the positioning bracket 65. The handwheel 66 adopts an insulating ceramic handwheel, and the hub at the center of the handwheel 66 and the right end of the internally threaded sleeve 64 respectively abut against the two opposite side walls of the left end of the positioning bracket 65, and the internally threaded sleeve 64 is pivotally connected to the positioning bracket 65 through the shape structure of the handwheel 66 and the internally threaded sleeve 64.

[0035] The left end of the pull rod 63 extends out of the internal threaded sleeve 64 , and the length of the pull rod 63 inside the internal threaded sleeve 64 and extending out of the left end surface of the internal threaded sleeve 64 is greater than the length of the locking sleeve 621 .

[0036] The width of the guide shaft 71 is greater than the distance from the guide shaft 71 to the lower end surface of the furnace body 1. A gap is provided between the end block 72 at the right end of the guide shaft 71 and the positioning ear seat 75. The gap needs to be greater than the diameter of the wire rope 74, so that the wire rope 74 will be stuck between the end block 72 and the positioning ear seat 75.

[0037] Working principle: This structure is a casting furnace used for hardware casting, wherein the furnace body 1 of the casting furnace is provided with a plurality of furnace openings 11, each furnace opening 11 is provided with a furnace door 2 that can be opened by rotation, and the furnace door 2 is opened and closed based on a door closing assembly 6 and a door stop assembly 7;

[0038] When the furnace door 2 is opened, the hand wheel 66 on the door closing assembly 6 is rotated, and the rotation of the hand wheel 66 can drive the pull rod 63 to move, thereby realizing the rightward movement of the internal threaded sleeve 64 to disengage from the handle 5. By manually pulling the handle 5 to apply an external force to the furnace door 2, the magnet block 73 on the door stopper assembly 7 can be disengaged from the end block 72, and the furnace door 2 can be rotated and opened under its own weight;

[0039] When there is no external force on the furnace door 2, the furnace door 2 is restricted by the door stopper assembly 7 and remains closed. Therefore, when the door closing assembly 6 is started, all the furnace doors 2 can be quickly opened based on the constraint of the door stopper assembly 7, and any furnace door 2 can also be quickly opened separately.

[0040] When closing the furnace door 2, the furnace door 2 is driven to rotate and become upright, and the magnet block 73 is moved by hand to be sucked against the end block 72 to keep the wire rope 74 taut, so as to keep the furnace door 2 upright and closed based on the magnetic force; then the hand wheel 66 is rotated to cause the internal threaded sleeve 64 to be sleeved onto the handle 5. At this time, ordinary external force or air pressure changes in the furnace cannot open the furnace door 2, so as to ensure that the furnace door 2 is closed when the casting furnace is working.

[0041] 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 casting furnace used for hardware casting, comprising a furnace body (1) of the casting furnace, a plurality of furnace openings (11) distributed laterally are provided on the front side of the furnace body (1), an electric heating assembly is arranged on the rear side of the inner cavity of the furnace openings (11), a heat insulation layer (3) is arranged on the inner cavity of the furnace body (1) between the furnace openings (11), the heat insulation layer (3) separates the inner cavity of the furnace openings (11) into a plurality of casting chambers (b), an air flow groove (a) communicating with adjacent casting chambers (b) is arranged on the rear end of the heat insulation layer (3), a plurality of furnace doors (2) opposite to the furnace openings (11) are arranged on the front side of the furnace body (1), and the lower side of the furnace door (2) is hinged to the furnace body (1) through a hinge assembly (4); characterized in that: Two groups of transverse handles (5) are provided at the upper front of the top of the furnace door (2), the handles (5) comprising transverse cylindrical handles (51), an arc-shaped handle rod (52) is fixedly connected to the outer wall of the middle part of the handle (51), and the lower end of the handle rod (52) is fixedly connected to the front end surface of the furnace door (2); a door closing assembly (6) is fixedly connected to the furnace body (1) on the upper side of the furnace door (2) and is transverse and opposite to the handles (5); The door closing assembly (6) comprises a transverse guide rail (61) fixedly connected to the furnace body (1), a slider (62) inserted in the transverse guide rail (61), the front end of the slider (62) extending out of the transverse guide rail (61) and being formed with a transverse locking sleeve (621), the right end of the handle (51) being inserted into the locking sleeve (621); a transverse pull rod (63) being fixedly connected to the slider (62), the outer wall of the left end of the pull rod (63) being formed with an external thread and extending out of the furnace body (1) and being screwed with a T-shaped internal thread sleeve (64), the internal thread sleeve (64) being pivotally connected to an L-shaped positioning bracket (65), the positioning bracket (65) being fixedly connected to the left side wall of the furnace body (1); the left end of the internal thread sleeve (64) extending out of the positioning bracket (65) and being sleeve-fixed with a hand wheel (66); A door stopper assembly (7) is provided in the middle of the furnace door (2), and the door stopper assembly (7) comprises a transverse guide shaft (71), and end blocks (72) are respectively inserted and fixedly connected at both ends of the guide shaft (71), and the end blocks (72) are fixedly connected to the furnace door (2); the guide shaft (71) is inserted and covered with an annular magnet block (73), and the magnet block (73) is sucked on the end block (72) at the left end of the guide shaft (71), and a transverse steel wire rope (74) is inserted and fixed on the magnet block (73), and the steel wire rope (74) passes through the end block (72) at the right end of the guide shaft (71) and is inserted and fixed on the positioning ear seat (75), and the positioning ear seat (75) is fixedly connected to the furnace body (1) on the right side of the furnace mouth (11); A buffer spring (76) is fixedly connected to the end block (72) at the right end of the guide shaft (71), and an annular baffle (77) is fixedly connected to the left end of the buffer spring (76). Both the baffle (77) and the buffer spring (76) are inserted and sleeved on the guide shaft (71).

2. A casting furnace for metal casting according to claim 1, characterized in that: The distance between any of the handles (51) and the adjacent handles (51) is greater than the length of the internal threaded sleeve (64) on the door closing assembly (6), and the inner diameter of the internal threaded sleeve (64) is equal to the diameter of the handle (51); Both ends of the handle (51) are formed with rounded shapes, and the mouth of the left end of the internal thread sleeve (64) is formed with a conical expansion.

3. A casting furnace for metal casting according to claim 2, characterized in that: The handles (5) are evenly distributed linearly and laterally, and the internal threaded sleeves (64) are evenly distributed linearly and laterally on the pull rod (63).

4. The casting furnace used for metal casting according to claim 1, characterized in that: The hinge assembly (4) comprises a plurality of transverse shaft sleeves (41), the shaft sleeves (41) are respectively fixedly connected to the lower side of the furnace door (2), a transverse hinge shaft (42) is inserted into the shaft sleeves (41), a plurality of end seats (43) are fixedly connected to the hinge shaft (42), and the end seats (43) are respectively fixedly connected to the furnace body (1).

5. The casting furnace used for metal casting according to claim 1, characterized in that: The hinge shaft (42) is located at the front lower part of the furnace door (2), and the outer wall of the shaft sleeve (41) is flush with the lower end of the furnace body (1); the front end of the outer wall of the handle (51) and the front end of the outer wall of the shaft sleeve (41) are in the same vertical plane; The center distance from the rear end surface of the furnace door (2) to the hinge axis (42) is equal to the center distance from the lower bottom surface of the inner cavity of the furnace body (1) to the hinge axis (42).

6. The casting furnace used for metal casting according to claim 1, characterized in that: The rear end face of the positioning bracket (65) is fixedly connected to a triangular rib plate, which is fixedly connected to the left side wall of the furnace body (1); the front end face of the left end of the positioning bracket (65) extending out of the furnace body (1) is formed with a transverse axial hole, and the internally threaded sleeve (64) is inserted into the axial hole of the positioning bracket (65); the handwheel (66) is a heat-insulating ceramic handwheel, and the hub at the center of the handwheel (66) and the right end of the internally threaded sleeve (64) respectively abut against the two opposite side walls of the left end of the positioning bracket (65).

7. The casting furnace used for metal casting according to claim 6, characterized in that: The left end of the pull rod (63) extends out of the internal threaded sleeve (64), and the length of the pull rod (63) inside the internal threaded sleeve (64) and extending out of the left end surface of the internal threaded sleeve (64) is greater than the length of the locking sleeve (621).

8. The casting furnace used for hardware casting according to claim 1, characterized in that: The width of the guide shaft (71) is greater than the distance from the guide shaft (71) to the lower end surface of the furnace body (1), and a gap is provided between the end block (72) at the right end of the guide shaft (71) and the positioning ear seat (75).

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