CN214601806U - Mold for precoated sand core shooter - Google Patents

Abstract

The application relates to a mold for a precoated sand core shooter, relating to the field of core shooters; the fixing device comprises an upper die and a lower die, wherein a fixing ring plate and a fixing plate are arranged on a rack, the fixing ring plate is positioned on one side of the upper die, which is far away from the lower die, the fixing plate is positioned on one side of the lower die, which is far away from the upper die, and the fixing ring plate is relatively fixed and corresponds to the upper die through bolts; the side, opposite to the fixed plate, of the lower die is provided with an inserting strip, the fixed plate is provided with a slot for inserting the corresponding inserting strip, the side walls, opposite to the slots, of the inserting strip are provided with fixed slots, the position, corresponding to the fixed slots, of the inserting strip is provided with a fixed hole, and the two fixed slots are communicated through the fixed hole; the fixing pieces are arranged in the fixing grooves, and when the inserting strips are completely inserted into the inserting grooves, the fixing pieces are simultaneously positioned in the fixing holes and the fixing grooves, and the inserting strips are relatively fixed in the inserting grooves; the fixing plate is provided with a reset piece, and the reset piece is used for enabling the fixing piece to be completely positioned in the corresponding fixing groove. This application has reached the effect that effectively improves mould change efficiency.

Description

Mold for precoated sand core shooter

Technical Field

The application relates to the field of core shooters, in particular to a mold for a precoated sand core shooter.

Background

At present, a core shooter is often used for manufacturing a sand core in the metal casting process; the core shooter generally comprises a frame, a sand core mould, a sand shooting device, a sand adding cylinder, an electric control machine and other mechanisms; when the sand injection molding machine works, sand is added into the sand injection device through the sand adding cylinder, and after the sand injection device is filled with the sand, the sand injection device rotates to the position above the sand core mold under the control of the electric control mechanism and injects sand into the sand core mold for molding.

The existing sand core mould generally comprises an upper mould and a lower mould, wherein the upper mould is relatively fixed on a rack, a driving part is arranged at the bottom of the lower mould, the driving part drives the lower mould to be close to or far away from the upper mould, and the driving part is generally a cylinder; wherein, the upper die is generally provided with a sand injection hole, and the sand shooting device injects sand into a cavity formed between the upper die and the lower die through the sand injection hole; the upper die is relatively fixed with the frame through a bolt, and the lower die is also relatively fixed with the driving piece through a bolt.

With respect to the related art among the above, the inventors consider that the following drawbacks exist: the upper die and the lower die are fixed through the bolts, and when the dies need to be replaced, the replacement efficiency of the dies is low due to the processes of screwing down and screwing down of the bolts.

SUMMERY OF THE UTILITY MODEL

In order to improve the problem that the mould change is inefficient, the application provides a mould for tectorial membrane sand core shooter.

The application provides a mould for tectorial membrane sand core shooting machine adopts following technical scheme:

a mold for a precoated sand core shooter comprises an upper mold and a lower mold, wherein a fixed ring plate and a fixed plate are arranged on a rack, the fixed ring plate is positioned on one side of the upper mold, which is far away from the lower mold, the fixed plate is positioned on one side of the lower mold, which is far away from the upper mold, and the fixed ring plate is relatively fixed and corresponds to the upper mold through a bolt; the side, opposite to the fixed plate, of the lower die is provided with an inserting strip, the fixed plate is provided with a slot for inserting the corresponding inserting strip, the side walls, opposite to the slots, of the inserting strip are provided with fixed slots, the position, corresponding to the fixed slots, of the inserting strip is provided with a fixed hole, and the two fixed slots are communicated through the fixed hole; the fixing pieces are arranged in the fixing grooves, and when the inserting strips are completely inserted into the inserting grooves, the fixing pieces are simultaneously positioned in the fixing holes and the fixing grooves, and the inserting strips are relatively fixed in the inserting grooves; the fixing plate is provided with a reset piece, and the reset piece is used for enabling the fixing piece to be completely positioned in the corresponding fixing groove.

By adopting the technical scheme, when the die is installed, the inserting strips are inserted along the length direction of the inserting grooves at first, and when the inserting strips are completely inserted into the corresponding inserting grooves, the fixing pieces are simultaneously positioned in the fixing grooves and the fixing holes, and the inserting strips are relatively fixed in the corresponding inserting grooves, so that the lower die and the fixing plate are relatively fixed; when the lower die needs to be disassembled, the lower die only needs to be disassembled by controlling the reset piece to drive the fixing piece to be completely reset into the corresponding fixing groove, the cutting is in a free state at the moment, and the cutting is taken out along the length direction of the inserting groove; the fixing piece and the cooperation that resets provide convenience for the dismouting of lower mould and fixed plate, have saved original dismantlement or fastening bolt's time to be convenient for realize the quick replacement of mould.

Optionally, the fixing member includes a fixing spring and a fixing block, wherein one end of the fixing spring is fixed on the side walls of the two fixing grooves facing each other, the other end of the fixing spring is fixed on the side wall of the fixing block facing away from each other, and when the fixing block is located in the fixing hole and the fixing groove at the same time, the fixing spring is in a compressed state; the mutually opposite sides of the fixing blocks are provided with inclined planes, the inclined planes incline towards the direction in which the inserting slots are inserted into the inserting strips, and the mutually opposite sides of the two fixing blocks are in a tight state when the fixing springs are in a compressed state.

By adopting the technical scheme, when one end of the inserting strip inserted into the inserting groove passes through the fixing groove and the fixing groove is not communicated with the fixing hole, the fixing block is completely positioned in the corresponding fixing groove, and the fixing spring is in a compressed state; when the fixing groove and the fixing hole are aligned, the fixing spring rebounds to rebound the corresponding fixing block into the fixing hole, and the two fixing blocks abut tightly, so that the lower die and the fixing plate are stably connected; the arrangement of the inclined surface provides convenience for the complete insertion of the cutting.

Optionally, all be equipped with the magnet piece on the fixed block lateral wall just to each other, two magnet pieces are inhaled tightly each other.

Through adopting above-mentioned technical scheme, when two fixed blocks supported tightly each other, two magnet pieces inhaled tightly each other to realize the further connection of mould and fixed plate.

Optionally, the side walls of the fixing grooves opposite to each other are provided with reset holes, and the reset pieces are arranged in the corresponding reset holes; the piece that resets includes the screw rod that resets and the slide bar that resets, and wherein the screw rod that resets is close to the one end of fixed block and has seted up the groove that slides, and the slide bar that resets slides and connects in the inslot that slides, and the slide bar that resets is close to the one end of fixed block and is connected with the fixed block rotation, and the screw rod that resets corresponds position threaded connection with the reset hole.

By adopting the technical scheme, after the inserting strips are completely inserted into the corresponding inserting grooves, the fixed block rebounds to the fixed hole under the action of the fixed spring, and the reset sliding rod slides towards the direction close to the fixed hole along the sliding groove in the rebounding process; when the lower die is required to be disassembled, the reset screw rod is controlled to rotate so that the reset screw rod moves towards the direction far away from the fixing hole, and the reset sliding rod can drive the fixing block to synchronously slide towards the direction far away from the fixing hole, so that the inserting strips are convenient to be in a free state.

Optionally, a limiting groove is formed in the circumferential side wall of the fixing groove, a limiting strip is arranged at the position, corresponding to the limiting groove, of the circumferential side wall of the fixing block, the limiting groove is further formed in the circumferential side wall of the fixing hole, the length direction of the limiting groove is parallel to the length direction of the fixing hole, and the limiting strip slides along the length direction of the corresponding limiting groove.

Through adopting above-mentioned technical scheme, the fixed block is getting into the fixed orifices or by the in-process of fixed orifices roll-off by the fixed slot, and spacing all slides along corresponding spacing groove synchronization, and the stability when spacing and spacing groove slide is convenient for improve the fixed block and remove.

Optionally, a clamping piece is arranged on the fixing plate, a positioning plate is arranged on one side, far away from the clamping piece, of the fixing plate, and the positioning plate is detachable; the clamping piece comprises a clamping plate and a sliding strip arranged at the bottom of the clamping plate, and a sliding groove is formed in the position, corresponding to the sliding strip, on the fixing plate; and the fixed plate is also provided with a driving piece, and the driving piece is used for driving the clamping plate to be close to the lower die and finally clamping the lower die between the positioning plate and the clamping plate.

By adopting the technical scheme, after the inserting strips are completely inserted into the corresponding slots, the driving piece is controlled to drive the clamping plate to approach the positioning plate until the lower die is clamped between the positioning plate and the clamping plate, so that the lower die is further fixed.

Optionally, the side walls of the clamping plate and the positioning plate which are opposite to each other are provided with rubber layers.

By adopting the technical scheme, the lower die is conveniently and effectively protected by the arrangement of the rubber layer.

Optionally, the driving part comprises a motor and a screw rod, wherein one end of the screw rod penetrates through the slide bar and is in threaded connection with the slide bar, and the other end of the screw rod is coaxially fixed with the motor; the motor is arranged on the fixed plate.

Through adopting above-mentioned technical scheme, when needs make the clamp plate press from both sides the lower mould tightly, only need control motor, can make the lead screw drive draw runner slide along corresponding spout, press from both sides the clamp plate tightly the lower mould until the clamp plate to realize the further fixed of lower mould, can effectively use manpower sparingly simultaneously.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the fixing piece and the reset piece are arranged, when the lower die is fixed, the lower die and the fixing plate can be fixed relatively only by completely inserting each inserting strip into the corresponding inserting groove; when the lower die needs to be disassembled, the lower die can be disassembled only by controlling the reset piece to drive the fixing piece to be far away from the corresponding inserting strip; the lower die is convenient to disassemble and fix, and convenience is provided for fast replacement of the die;

2. a clamping piece is arranged to further improve the stability of the lower die during working;

3. the clamping piece is controlled by the driving piece to clamp the lower die, so that the die is ensured to work stably, and the convenience of die replacement is improved.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present application;

FIG. 2 is a partial cross-sectional view showing the fastener;

FIG. 3 is a partial schematic view of FIG. 2 showing a stopper bar;

fig. 4 is a partial sectional view showing the chute.

Description of reference numerals: 1. a frame; 11. a fixing plate; 111. a slot; 112. fixing grooves; 1121. a limiting groove; 113. a reset hole; 114. a chute; 115. positioning a plate; 1151. connecting grooves; 12. a stationary ring plate; 2. a mold; 21. an upper die; 211. injecting sand holes; 22. a lower die; 221. cutting; 222. a fixing hole; 3. a fixing member; 31. fixing the spring; 32. a fixed block; 321. a limiting strip; 322. a magnet piece; 323. an inclined surface; 4. a reset member; 41. resetting the screw; 411. a sliding groove; 412. positioning a groove; 42. resetting the sliding rod; 421. a positioning bar; 5. a clamping member; 51. a clamping plate; 511. a rubber layer; 52. a slide bar; 6. a drive member; 61. a motor; 62. a lead screw; 7. a positioning member; 71. positioning the chain; 72. and a positioning column.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses a mould for tectorial membrane sand core shooting machine.

Referring to fig. 1 and 2, a mold for a precoated sand core shooter comprises an upper mold 21 and a lower mold 22, a fixing plate 11 and a fixing ring plate 12 are arranged on a rack 1, the fixing plate 11 is used for fixing the lower mold 22 and the rack 1 relatively, the fixing ring plate 12 is used for fixing the upper mold 21 and the rack 1 relatively, the fixing plate 11 is in sliding fit with the rack 1 through a cylinder or other lifting mechanisms, the fixing ring plate 12 and the rack 1 are fixed relatively, and the upper mold 21 and the fixing ring plate 12 are fixed relatively through bolts; the lower die 22 is fixedly provided with an inserting strip 221 on one side opposite to the fixing plate 11, the fixing plate 11 is provided with a slot 111 for inserting the inserting strip 221, a fixing part 3 is arranged in the slot 111, and the fixing part 3 is used for relatively fixing the inserting strip 221 and the fixing plate 11; a reset piece 4 is provided in the slot 111, and the reset piece 4 is used for releasing the fixation of the fixing piece 3 on the insert strip 221.

When the mold 2 needs to be replaced, each resetting piece 4 is controlled to release the fixing of the fixing piece 3 on the corresponding insert 221 so as to enable the insert 221 to be in a free state; then, the lower die 22 is taken out along the length direction of the slot 111 to separate the lower die 22 from the fixing plate 11, and then the bolts for fixing the upper die 11 are unscrewed to complete the disassembly of the existing die 2; selecting a required die 2, inserting the inserting strips 221 along the corresponding slots 111 until the lower die 22 and the fixing plate 11 are fixed relatively, and then fixing the upper die 21 relatively through bolts, so as to complete the replacement of the die 2; the lower die 22 can be detached and replaced by controlling the fixing part 3 and the resetting part 4, so that the time occupied by screwing a plurality of bolts in the prior art is reduced, and the manpower is saved, thereby facilitating the replacement of the die 2.

Referring to fig. 2 and 3, two opposite side walls of the slot 111 are provided with fixing grooves 112, and a fixing member 3 is disposed in each fixing groove 112; the fixing hole 222 is formed in the circumferential side wall of the insert 221, when the insert 221 is completely inserted into the slot 111, the fixing hole 222 enables the two fixing grooves 112 to be communicated, and the fixing member 3 is located in the fixing hole 222 and the fixing grooves 112 at the same time; the fixing part 3 comprises fixing springs 31 and fixing blocks 32, wherein the fixing blocks 32 are connected in the corresponding fixing grooves 112 in a sliding manner, two fixing springs 31 are arranged in each fixing groove 112, one end of each fixing spring 31 is fixed to one side, far away from the fixing hole 222, of each fixing block 32, and the other end of each fixing spring 31 is fixed to one side, far away from the fixing hole 222, of each fixing groove 112; the side of the fixing block 32 away from the corresponding fixing spring 31 is provided with an inclined surface 323, and the inclined surface 323 is inclined towards the insertion direction of the cutting strip 221 into the insertion slot 111; when the insert 221 is completely inserted into the insertion groove 111, the fixing block 32 is simultaneously positioned in the fixing hole 222 and the fixing groove 112, and the fixing spring 31 is compressed.

The inserting bar 221 slides along the corresponding slot 111, when the inserting bar 221 passes through the fixing slot 112 and is not completely inserted into the corresponding slot 111, the fixing block 32 is completely located in the corresponding fixing slot 112 under the influence of the inserting bar 221, and at this time, the fixing spring 31 is in a compressed state; until the cutting 221 is completely inserted into the slot 111, the fixing spring 31 rebounds to bounce the fixing blocks 32 into the fixing holes 222, so that the fixing blocks 32 opposite to each other of the two fixing blocks 32 are abutted against each other, and the relative fixation of the cutting 221 and the fixing plate 11 is realized; when the insert 221 is inserted into the corresponding slot 111, the insert 221 may gradually push the fixing block 32 into the corresponding fixing groove 112 along the inclined surface 323, and the arrangement of the inclined surface 323 facilitates the insertion of the insert 221.

Referring to fig. 2 and 3, a limiting groove 1121 is formed in a circumferential side wall of the fixing groove 112, a limiting strip 321 is fixedly arranged at a position of the circumferential side wall of the fixing block 32 corresponding to the limiting groove 1121, and the limiting strip 321 slides along the corresponding limiting groove 1121; the opposite side walls of the fixed block 32 are provided with magnet pieces 322, the magnet pieces 322 are positioned in the area of the fixed block 32 except the inclined surface 323, and the two opposite magnet pieces 322 attract each other; when the fixing block 32 is rebounded by the fixing spring 31, and the fixing block 32 slides to the fixing hole 222 along the fixing groove 112, the limiting strip 321 slides along the corresponding limiting groove 1121; the sliding fit of the limiting strip 321 and the limiting groove 1121 is convenient for improving the accuracy of the fixing block 32 sliding into the fixing hole 222; when the two fixing blocks 32 abut against each other, the two magnet pieces 322 are attracted to each other, so as to improve the stability of the relative fixing between the lower mold 22 and the fixing plate 11.

Referring to fig. 2 and 3, a reset hole 113 is formed in one side of the fixing groove 112 away from the corresponding fixing hole 222, and the reset piece 4 is located in the reset hole 113; the reset piece 4 comprises a reset screw rod 41 and a reset sliding rod 42, wherein the reset screw rod 41 is in threaded connection with the corresponding reset hole 113; a sliding groove 411 is formed in one side, close to the fixing hole 222, of the reset screw 41, positioning grooves 412 which are parallel to each other are formed in the circumferential side wall of the sliding groove 411, the length direction of each positioning groove 412 is parallel to the length directions of the reset screw 41 and the reset slide rod 42, and a certain distance is reserved between one side, close to the fixing block 32, of each positioning groove 412 and one side, close to the fixing block 32, of the sliding groove 411; the positioning strip 421 is fixedly arranged on the circumferential side wall of the reset sliding rod 42, the positioning strip 421 slides along the length direction of the corresponding positioning groove 412, and one side of the reset sliding rod 42, which is opposite to the fixed block 32, is in running fit with the fixed block 32.

When the lower mold 22 needs to be disassembled, the reset screw 41 can be rotated, at this time, due to the limitation of each positioning groove 412, the reset sliding rod 42 is synchronously rotated along with the reset screw 41 and moves towards the direction away from the fixing hole 222 along the length direction of the reset groove, so as to drive the fixing block 32 to move towards the direction away from the fixing hole 222, until the fixing block 32 is completely located in the corresponding fixing groove 112, so as to facilitate the disassembly of the lower mold 22.

Referring to fig. 1 and 4, a positioning plate 115 is vertically arranged on the upper surface of the fixing plate 11, one side of the positioning plate 115, which faces the lower die 22, is flush with the corresponding vertical side wall of the upper die 21, and the positioning plate 115 is hinged to the fixing plate 11; a positioning piece 7 is arranged on the fixing plate 11, the positioning piece 7 comprises a positioning chain 71 and a positioning column 72, one end of the positioning chain 71 is fixed with the vertical side wall of the fixing plate 11, which is perpendicular to the length direction of the slot 111, and the other end of the positioning chain is in rotating fit with the positioning column 72; a connecting groove 1151 is formed in a vertical side wall of the positioning plate 115, the positioning column 72 is inserted into the corresponding connecting groove 1151 and is in threaded connection with the connecting groove 1151, and the positioning chain 71 is in a stretched state at this time.

The clamping elements 5 are arranged on the sides, far away from the upper surface of the fixing plate 11, of the upper surface, the clamping elements 5 comprise clamping plates 51 and sliding strips 52, the sliding strips 52 are fixedly arranged at the bottoms of the clamping plates 51, the vertical sections of the sliding strips 52 in the embodiment of the application are in a dovetail shape, the width of the bottoms of the sliding strips 52 is the largest, and sliding grooves 114 for the sliding strips 52 to slide are formed in the fixing plate 11; the rubber layers 511 are fixedly arranged on the opposite side walls of the clamping plate 51 and the positioning plate 115, and the opposite side walls of the rubber layers 511 are tightly propped against the corresponding side walls of the lower die 22; the fixing plate 11 is provided with a driving member 6, and the driving member 6 is used for driving the sliding strip 52 to slide along the corresponding sliding slot 114.

After the fixing member 3 relatively fixes the lower mold 22, the positioning plate 115 is first in a vertical state, and each positioning column 72 is screwed into the corresponding connecting groove 1151, so that the fixing plate 11 is kept in the vertical state; the rear control driving member 6 drives the clamping plate 51 to slide towards the direction close to the corresponding positioning plate 115 until the clamping plate 51 and the positioning plate 115 clamp the lower die 22; the rubber layer 511 can effectively protect the lower mold 22 and improve the friction between the lower mold 22 and the corresponding positioning plate 115 and the clamping plate 51, thereby improving the stability of the lower mold 22 during operation.

Referring to fig. 1 and 4, the driving member 6 includes a motor 61 and a screw 62, wherein one end of the screw 62 penetrates through the slide bar 52 located at the middle position of the bottom of the clamping plate 51 and then is in threaded connection with the slide bar 52, the other end of the screw 62 is coaxially fixed with the motor 61, and the motor 61 is fixedly connected with the fixed ring plate 2 or the fixed plate 11; when the motor 61 is in a working state, the motor 61 drives the lead screw 62 to rotate, and the rotation of the lead screw 62 drives the slide bar 52 in threaded connection with the lead screw to slide along the corresponding sliding groove 114 until the lower die 22 is abutted against the positioning plate 115 by the clamping plate 51.

The implementation principle of the mold for the precoated sand core shooter is as follows: when the lower die 22 needs to be replaced, the motor 61 can be controlled to drive the screw rod 62 to rotate, and finally the clamping plate 51 is driven to slide in a direction away from the corresponding positioning plate 115; then, the positioning column 72 for fixing the positioning plate 115 is taken out, and the fixing plate 11 is in a horizontal state; screwing each reset screw 41 to enable the fixing block 32 to move towards the direction far away from the corresponding fixing hole 222 until the fixing block 32 is only located in the corresponding fixing groove 112 finally, at the moment, the cutting strips 221 are in a free state, and the lower die 22 can be disassembled only by enabling each cutting strip 221 to slide out from the corresponding slot 111; after the required lower die 22 is selected, the reset screw rod 41 is reset, each inserting strip 221 is aligned to the corresponding slot 111, and then each inserting strip 221 is inserted into the corresponding slot 111 along the length direction of the slot 111 until the inserting strip 221 is completely positioned in the corresponding slot 111, so that the lower die 22 can be disassembled and replaced conveniently; by the method, the lower die 22 is disassembled or replaced, the time for screwing a plurality of bolts is reduced, convenience is brought to the disassembly and replacement of the die 2, and the efficiency of replacing the die 2 is improved conveniently.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. The utility model provides a mould for tectorial membrane sand core shooting machine which characterized in that: the die comprises an upper die (21) and a lower die (22), wherein a fixed ring plate (12) and a fixed plate (11) are arranged on a rack (1), the fixed ring plate (12) is positioned on one side, deviating from the lower die (22), of the upper die (21), the fixed plate (11) is positioned on one side, deviating from the upper die (21), of the lower die (22), and the fixed ring plate (12) is relatively fixed and corresponds to the upper die (21) through bolts; one side, opposite to the fixing plate (11), of the lower die (22) is provided with an inserting strip (221), a slot (111) for inserting the corresponding inserting strip (221) is formed in the fixing plate (11), the side wall, opposite to the slot (111), of the fixing plate is provided with a fixing groove (112), a fixing hole (222) is formed in the position, corresponding to the fixing groove (112), of the inserting strip (221), and the two fixing grooves (112) are communicated through the fixing hole (222); the fixing pieces (3) are arranged in the fixing grooves (112), and when the inserting strips (221) are completely inserted into the inserting grooves (111), the fixing pieces (3) are simultaneously positioned in the fixing holes (222) and the fixing grooves (112), and the inserting strips (221) are relatively fixed in the inserting grooves (111); the fixing plate (11) is provided with a reset piece (4), and the reset piece (4) is used for enabling the fixing piece (3) to be completely positioned in the corresponding fixing groove (112).

2. A mould for a precoated sand core shooter according to claim 1, characterized in that: the fixing piece (3) comprises a fixing spring (31) and a fixing block (32), wherein one end of the fixing spring (31) is fixed on the mutually opposite side walls of the two fixing grooves (112), the other end of the fixing spring is fixed on the mutually opposite side walls of the fixing block (32), and when the fixing block (32) is simultaneously positioned in the fixing hole (222) and the fixing groove (112), the fixing spring (31) is in a compressed state; the opposite sides of the fixing blocks (32) are provided with inclined surfaces (323), the inclined surfaces (323) incline towards the direction of the inserting strip (221) into the slot (111), and the opposite sides of the two fixing blocks (32) are in a butting state when the fixing spring (31) is in a compression state.

3. A mould for a precoated sand core shooter according to claim 2, characterized in that: the mutually opposite side walls of the fixed block (32) are provided with magnet pieces (322), and the two magnet pieces (322) are mutually tightly absorbed.

4. A mould for a precoated sand core shooter according to claim 2, characterized in that: reset holes (113) are formed in the side walls, opposite to each other, of the fixing grooves (112), and reset pieces (4) are arranged in the corresponding reset holes (113); the reset piece (4) comprises a reset screw (41) and a reset sliding rod (42), wherein one end of the reset screw (41) close to the fixed block (32) is provided with a sliding groove (411), the reset sliding rod (42) is connected in the sliding groove (411) in a sliding manner, one end of the reset sliding rod (42) close to the fixed block (32) is rotatably connected with the fixed block (32), and the reset screw (41) is in threaded connection with the reset hole (113) at the corresponding position.

5. A mould for a precoated sand core shooter according to claim 2, characterized in that: spacing groove (1121) have been seted up to fixed slot (112) circumference lateral wall, the position that fixed block (32) circumference lateral wall corresponds spacing groove (1121) all is equipped with spacing strip (321), spacing groove (1121) still set up on the circumference lateral wall of fixed orifices (222), spacing groove (1121) length direction is on a parallel with the length direction of fixed orifices (222), and spacing strip (321) slide along corresponding spacing groove (1121) length direction.

6. A mould for a precoated sand core shooter according to claim 2, characterized in that: a clamping piece (5) is arranged on the fixing plate (11), a positioning plate (115) is arranged on one side, far away from the clamping piece (5), of the fixing plate (11), and the positioning plate (115) is detachable; the clamping piece (5) comprises a clamping plate (51) and a sliding strip (52) arranged at the bottom of the clamping plate (51), and a sliding groove (114) is arranged on the fixing plate (11) at a position corresponding to the sliding strip (52); the fixing plate (11) is also provided with a driving part (6), and the driving part (6) is used for driving the clamping plate (51) to approach the lower die (22) and finally clamping the lower die (22) between the positioning plate (115) and the clamping plate (51).

7. A mould for a precoated sand core shooter according to claim 6, characterized in that: the rubber layers (511) are arranged on the opposite side walls of the clamping plate (51) and the positioning plate (115).

8. A mould for a precoated sand core shooter according to claim 6, characterized in that: the driving piece (6) comprises a motor (61) and a lead screw (62), wherein one end of the lead screw (62) penetrates through the sliding strip (52) and is in threaded connection with the sliding strip (52), and the other end of the lead screw (62) is coaxially fixed with the motor (61); the motor (61) is arranged on the fixed plate (11).

Images