CN218700833U - Sedimentation type secondary injection molding die for water tank cover - Google Patents

Abstract

The utility model discloses a subside formula secondary injection moulding mould for tank lid, including last mold mechanism, lower mold mechanism, and side form mechanism, it includes mould benevolence to go up mold mechanism, side form mechanism includes side mould benevolence, lower mold mechanism includes lower mould benevolence, lifting unit and backup pad, go up mould benevolence, lower mould benevolence, and form first die cavity between the mould benevolence of side, the holding chamber has been seted up to the lower mould benevolence, holding chamber and first die cavity intercommunication, the activity of holding intracavity is equipped with the floating seat, the slope of floating seat lateral wall is equipped with the slide rail, lifting unit is including locating the hydro-cylinder in the backup pad, and locate the tailpiece of the piston rod's of hydro-cylinder drive block, the spout has been seted up to the drive block correspondence slide rail, when the piston rod action of hydro-cylinder, through slide rail and spout direction cooperation, control floating seat is at the holding intracavity motion, make and form the second die cavity between floating seat and the first die cavity. The forming die has the effects of no need of rotating and opening the die in the forming process, cost saving, accurate and stable positioning and compact structure.

Description

Sedimentation type secondary injection molding die for water tank cover

Technical Field

The utility model relates to the technical field of mold, in particular to a subside formula secondary injection moulding mould for tank lid.

Background

The double-color mold is a mold in which two plastic materials are injected on the same injection molding machine and are molded twice, but the product is only demoulded once. This molding process, also known as two-shot molding, is typically accomplished with a single mold and requires a specialized two-shot injection molding machine. Because the appearance of the product can be more beautiful by double-material injection molding, the color is easy to change without spraying, and the product is increasingly popular in the market and is widely applied.

The prior Chinese patent with publication number CN 204295958U discloses a rotating mechanism of a double-color mold cavity, which comprises a cavity, a push plate, a plurality of fixed inserts, a rotating shaft, a plurality of guide pillars and a template, wherein the push plate is arranged at the bottom of the cavity, the top end of the rotating shaft is connected with the push plate, the bottom end of the rotating shaft penetrates through the inside of the template and is connected with a machine tool, the rotating shaft drives the cavity and the push plate to ascend, descend and rotate, a containing cavity for containing the cavity and the push plate is arranged in the template, the plurality of fixed inserts and the plurality of guide pillars are all arranged in the containing cavity, and the fixed inserts and the guide pillars both penetrate through the inside of the push plate and are arranged in the cavity.

However, the rotating mechanism of the double-color mold cavity has the following disadvantages: the rotary double-color mold is limited by an injection molding machine table, the machine table must be provided with a mechanism for providing rotation, a mechanism such as a rotary table or a rotary shaft is added to provide a 180-degree reciprocating rotation function, from the production angle of the rotary mold, a rotary ring section is added in the production, the situation of die pressing caused by dislocation of a product due to various factors in the process of rotating the product along with the mold is easily generated, particularly, when a product such as a water tank cover shown in figure 1 is produced, when a sealing rubber ring needs to be injected on a main body of the water tank cover for the second time, the positioning requirement on the mold is extremely high, if the product is produced by adopting the mold, the cost control is wasted, and the mold which can be formed for the second time without rotating and opening the mold is urgently needed at present.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a subside formula secondary injection moulding mould for tank lid has the effect that need not rotatory die sinking, save the cost, fix a position the accurate firm in the forming process.

The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides a subside formula secondary injection moulding mould for tank lid, includes upper die mechanism, lower die mechanism and side form mechanism, upper die mechanism includes mould benevolence, side form mechanism includes side mould benevolence, lower die mechanism includes lower mould benevolence, lifting unit and backup pad, go up mould benevolence lower mould benevolence and form first die cavity between the mould benevolence of side, the holding chamber has been seted up to lower mould benevolence, the holding chamber with first die cavity intercommunication, the holding intracavity activity is equipped with the floating seat, the slope of floating seat lateral wall is equipped with the slide rail, lifting unit is including locating the hydro-cylinder in the backup pad and locating the drive block of the piston rod tip of hydro-cylinder, the drive block corresponds the spout has been seted up to the slide rail, works as during the piston rod action of hydro-cylinder, through the slide rail with spout direction cooperation, control the floating seat is in the holding intracavity motion makes the floating seat with form the second die cavity between the first die cavity.

By adopting the technical scheme, before the first injection molding, the driving block moves forwards under the action of the oil cylinder, the floating seat is lifted upwards in the accommodating cavity under the guiding action between the sliding rail and the sliding groove, the lifted floating seat completely covers the second cavity, and only the gap of the first cavity is left for the first injection molding to form the water tank cover main body; after the first injection molding is finished, the driving block moves backwards under the action of the oil cylinder, the floating seat is enabled to descend downwards in the accommodating cavity under the guiding action of the sliding rail and the sliding groove, the operation of the oil cylinder is suspended after the floating seat descends to a required space of the second cavity, the floating seat is enabled to be kept in the state to perform secondary injection molding on the water tank cover main body, the height of the descending floating seat is the height of the sealing rubber ring, then the mold opening treatment is performed, and the effects of no need of rotating mold opening in the molding process and cost saving are achieved.

The utility model discloses a further set up to: the supporting plate is provided with a supporting block corresponding to the driving block, the driving block is provided with a first guide inclined plane, the supporting block is provided with a second guide inclined plane corresponding to the first guide inclined plane, and the first guide inclined plane is in guide fit with the second guide inclined plane.

Through adopting above-mentioned technical scheme, when the piston rod of hydro-cylinder drove the drive block and removed to the supporting shoe on, through the direction cooperation on first direction inclined plane and second direction inclined plane, make the drive block remove to the supporting shoe more smoothly on, the supporting shoe has effectively supported the drive block in addition, can prevent to a certain extent that the drive block from directly acting on to make the backup pad warp in the backup pad, has increased the utility model discloses a life.

The utility model discloses a further set up to: the supporting plate is provided with a limiting cover, and the limiting cover is in limiting fit with the driving block.

Through adopting above-mentioned technical scheme, spacing lid has carried out vertical spacing to the drive block, makes the drive block can only remove along the horizontal direction, and when the drive block supported on the supporting shoe in addition, the supporting shoe has the resistance of horizontal direction to the drive block, and spacing lid has carried out vertical direction's spacing to the drive block, makes the drive block can not excessively stretch out the damage that leads to the mould relative to the supporting shoe.

The utility model discloses a further set up to: the horizontal inclination angle alpha of the slide rail relative to the floating seat is set to be 5-10 degrees.

By adopting the technical scheme, when the inclination angle of the slide rail is too large, the stress generated between the slide groove of the driving block and the slide rail of the floating seat is too large, the friction resistance is increased, and the floating seat is not beneficial to moving upwards relative to the driving block; when the inclination angle degree of slide rail is too little, though increased the smooth degree of sliding between slide rail and the spout, can make the vertical ascending or decurrent velocity component of floating seat diminish, make the distance that floating seat vertically moved reduce, if the vertical migration distance that reaches the floating seat and set for, must increase the length of slide rail, this occupation space that can lead to whole mould increases, causes the increase of cost.

The utility model discloses a further set up to: the supporting plate is provided with a first limiting rod, the driving block corresponds to the first limiting rod and is provided with a long-strip-shaped limiting hole, the limiting cover corresponds to the first limiting rod and is provided with a first positioning hole, and the first limiting rod penetrates through the first positioning hole and is in limiting fit with the limiting hole.

Through adopting above-mentioned technical scheme, first gag lever post makes the drive block when the horizontal direction removes, has carried on spacingly to the drive block, prevents that the drive block from excessively stretching out.

The utility model discloses a further set up to: the supporting plate is provided with a second limiting rod, the driving block is provided with a notch corresponding to the second limiting rod, the limiting cover is provided with a second positioning hole corresponding to the second limiting rod, and the second limiting rod penetrates through the second positioning hole and is in limiting fit with the notch.

By adopting the technical scheme, when the second limiting rod enables the driving block to move in the horizontal direction, the driving block is limited, and the driving block is prevented from excessively extending out.

The utility model discloses a further set up to: the oil cylinder is connected with the driving block through a fixing seat, a convex rail is arranged on the supporting plate, the fixing seat corresponds to the convex rail, a slide way is formed in the convex rail, and the convex rail is matched with the slide way in a guiding mode.

Through adopting above-mentioned technical scheme, through the direction cooperation of protruding rail and slide, make the hydro-cylinder drive the fixing base and slide in the backup pad.

The utility model discloses a further set up to: the middle part of the fixing seat is provided with a cavity and a limiting groove communicated with the cavity, the end part of a piston rod of the oil cylinder is provided with a sliding block, the sliding block is arranged in the cavity in a penetrating way, the side wall of the sliding block is provided with a resisting part in an extending way, and the resisting part is movably arranged in the limiting groove; the fixing seat is further symmetrically provided with a channel communicated with the cavity, lock columns are movably arranged in the channel on two sides in a penetrating mode, a lock seat is arranged on the supporting plate and corresponds to the lock columns, locking holes are formed in the lock seat, when piston rods of the oil cylinders stretch out, the fixing seat is driven to move, the channel corresponds to the locking holes, the two sides of the lock columns are pushed by the sliding blocks to stretch out of the channel respectively, and the lock columns are matched with the locking holes in a locking mode.

By adopting the technical scheme, when the first injection molding is carried out, the piston rod of the oil cylinder drives the sliding block to move forwards, the locking column is stopped by the locking seat, the sliding block can push the locking column to drive the fixing seat to move forwards, the locking column moves forwards along with the sliding block, when the locking column moves to the position corresponding to the locking seat, the piston rod continues to push forwards, the sliding block is gradually inserted between the locking columns on the two sides, the locking column is simultaneously pushed to extend out of the channel towards the two sides and is abutted against the locking hole of the locking seat, the abutting part of the sliding block is abutted against the end face of the limiting groove, the sliding block is abutted against and matched with the end part of the locking column, the locking seat is simultaneously matched with the locking column in a locking way, the piston rod cannot continue to extend forwards, the limiting fixing effect is achieved, the first injection molding is carried out, after the first injection molding is finished, the oil cylinder drives the piston rod to retract, the piston rod drives the sliding block to move backwards, the abutting part of the sliding block gradually moves towards one end far away from the locking column of the limiting groove, the end part of the sliding block is simultaneously, the end part of the sliding block gradually far away from the locking column, the locking column is gradually kept away from the limiting groove, the sliding block, the end part of the sliding block gradually keeps away from the locking column, the sliding block and drives the sliding block to move back to carry out the locking column after the locking column, and carry out secondary injection molding, and carry out unlocking is carried out.

The utility model discloses a further set up to: first inclined plane has been seted up to the slider tip, lock post tip corresponds second inclined plane has been seted up to first inclined plane.

Through adopting above-mentioned technical scheme, the direction cooperation on first inclined plane and second inclined plane can make the slider insert and become more smooth between the both sides lock cylinder.

The utility model discloses a further set up to: the lock hole side wall is set to be a third guide inclined plane, a fourth guide inclined plane is arranged at one end, close to the lock hole, of the lock column, and the third guide inclined plane is in guide fit with the fourth guide inclined plane.

Through adopting above-mentioned technical scheme, the cooperation of direction on third direction inclined plane and the fourth direction inclined plane makes the lock post withdraw from the lockhole and becomes easier, prevents that the lock post from taking place deformation.

To sum up, the utility model discloses following beneficial effect has: the sliding rails are arranged on two sides of the floating seat, and meanwhile, the oil cylinder is adopted to drive the driving block provided with the sliding groove to be matched with the sliding rails in a guiding mode, so that the floating seat floats up and down in the accommodating cavity of the lower die core to perform secondary injection molding respectively, and the mold has the effects of no need of rotating and opening a mold in the molding process, cost saving, accurate and stable positioning and compact structure.

Drawings

Fig. 1 is a diagram of a prior art product.

Fig. 2 is a structural view of the present invention.

Fig. 3 is a longitudinal sectional view of the present invention.

Fig. 4 is a partially enlarged view of the area a in fig. 3 of the present invention, and the floating seat is lifted for one-step forming.

Fig. 5 is a partially enlarged view of the area a in fig. 3 of the present invention, and the floating seat is lowered for secondary molding.

Fig. 6 is a structural diagram of the lifting assembly, the supporting plate and the floating seat of the present invention.

Fig. 7 is an exploded view of fig. 6 according to the present invention.

Figure 8 is a front view of figure 6 of the present invention.

Fig. 9 is a cross-sectional view of the cross-section B-B of fig. 8, showing the piston rod of the cylinder in an extended state.

Figure 10 is a cross-sectional view of the cross-section B-B of figure 8 with the piston rod of the cylinder in a retracted state.

In the figure: 101. an upper die core; 102. a lower die core; 103. a side mold core; 1. a support plate; 11. a support block; 111. a second guide slope; 12. a limiting cover; 121. a first positioning hole; 122. a second positioning hole; 13. a first limit rod; 14. a second limiting rod; 15. a raised rail; 16. a lock seat; 161. a lock hole; 1611. a third guide slope; 21. a first cavity; 22. an accommodating cavity; 221. a second cavity; 3. a floating seat; 31. a slide rail; 4. an oil cylinder; 40. a slider; 401. a resisting part; 402. a first inclined surface; 41. a drive block; 411. a chute; 412. a first guide slope; 413. a limiting hole; 414. a notch; 5. a fixed seat; 51. a slideway; 52. a chamber; 53. a limiting groove; 54. a channel; 541. a lock cylinder; 5411. a second inclined surface; 5412. a fourth guide slope; 61. a primary feed port; 62. a secondary feed inlet; 7. a water tank cover; 71. a tank cover main body; 72. and sealing the rubber ring.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

A sedimentation type secondary injection molding mold for a water tank cover, which comprises an upper mold mechanism, a lower mold mechanism and a side mold mechanism as shown in figures 1-4, the upper die mechanism comprises an upper die core 101, the side die mechanism comprises a side die core 103, the lower die mechanism comprises a lower die core 102, a lifting component and a supporting plate 1, a first cavity 21 is formed among the upper die core 101, the lower die core 102 and the side die core 103, the lower die core 102 is further provided with an accommodating cavity 22, the accommodating cavity 22 is communicated with the first cavity 21, a floating seat 3 is movably arranged in the accommodating cavity 22, the space clearance of the accommodating cavity 22 below the floating seat 3 is large enough to ensure that the utility model completes the secondary injection molding, the side wall of the floating seat 3 is obliquely provided with a slide rail 31, the lifting component comprises an oil cylinder 4 arranged on the supporting plate 1 and a driving block 41 arranged at the end part of a piston rod of the oil cylinder 4, the driving block 41 is provided with a chute 411 corresponding to the slide rail 31, when the piston rod of the oil cylinder 4 acts, the sliding rail 31 is in guiding fit with the sliding groove 411 to control the floating seat 3 to move in the accommodating cavity 22, when the piston rod of the oil cylinder 4 extends out, the floating seat 3 moves upwards to perform one-time injection molding through the guiding fit of the slide rail 31 and the slide groove 411 to form a water tank cover main body 71 of the water tank cover 7, a one-time feeding hole 61 of the first injection molding is arranged at the upper part of the mold, when the piston rod of the oil cylinder 4 retracts, the floating seat 3 moves downwards through the guiding fit of the sliding rail 31 and the sliding groove 411, the height of the downward movement of the floating seat 3 is the height of the sealing rubber ring 72, in this way, a second cavity 221 is formed between the floating seat 3 and the tank cover main body 71, at this time, the sealing rubber ring 72 of the tank cover 7 is formed by the second injection molding, and the secondary feed inlet 62 of the second injection molding is opened on the side wall of the mold.

As shown in fig. 5-6, the supporting plate 1 is provided with the supporting block 11 corresponding to the driving block 41, the driving block 41 is provided with the first guiding inclined plane 412, the supporting block 11 is provided with the second guiding inclined plane 111 corresponding to the first guiding inclined plane 412, the first guiding inclined plane 412 is in guiding fit with the second guiding inclined plane 111, when the piston rod of the oil cylinder 4 drives the driving block 41 to move to the supporting block 11, through the guiding fit of the first guiding inclined plane 412 and the second guiding inclined plane 111, the driving block 41 is moved to the supporting block 11 more smoothly, in addition, the supporting block 11 effectively supports the driving block 41, the driving block 41 can be prevented to a certain extent from being directly acted on the supporting plate 1 to deform the supporting plate 1, and the service life of the present invention is prolonged.

Be equipped with spacing lid 12 on the backup pad 1, spacing lid 12 and the spacing cooperation of drive block 41, spacing lid 12 has carried out vertical spacing to drive block 41, make drive block 41 can only remove along the horizontal direction, in addition when drive block 41 supports on supporting shoe 11, supporting shoe 11 has the resistance of horizontal direction to drive block 41, spacing lid 12 has carried out vertical direction's spacing to drive block 41, make drive block 41 can not excessively stretch out the damage that leads to the mould relative to supporting shoe 11.

The horizontal inclination angle α of the slide rail 31 relative to the floating seat 3 is set to 5-10 °, and the preferred inclination angle α is set to 5 °, when the inclination angle of the slide rail 31 is too large, the stress generated between the sliding slot 411 of the driving block 41 and the slide rail 31 of the floating seat 3 is too large, the frictional resistance is increased, and the floating seat 3 is not beneficial to moving upwards relative to the driving block 41; when the inclination angle of the slide rail 31 is too small, although the slip smoothness between the slide rail 31 and the chute 411 is increased, the velocity component of the floating seat 3 moving vertically upwards or downwards is reduced, so that the distance of the floating seat 3 moving vertically is reduced, and if the vertical moving distance set by the floating seat 3 is reached, the length of the slide rail 31 is inevitably increased, which may result in an increase in the occupied space of the whole mold, and an increase in the cost.

The supporting plate 1 is provided with a first limiting rod 13, the driving block 41 is provided with a strip-shaped limiting hole 413 corresponding to the first limiting rod 13, the limiting cover 12 is provided with a first positioning hole 121 corresponding to the first limiting rod 13, and the first limiting rod 13 penetrates through the first positioning hole 121 and is in limiting fit with the limiting hole 413; be equipped with second gag lever post 14 in the backup pad 1, the drive block 41 corresponds second gag lever post 14 and has seted up jagged 414, and second locating hole 122 has been seted up to spacing lid 12 corresponding second gag lever post 14, second gag lever post 14 wear to locate in the second locating hole 122 and with the spacing cooperation of jagged 414, through first gag lever post 13 and second gag lever post 14 respectively with drive block 41 in the spacing cooperation of horizontal direction, can prevent effectively that drive block 41 from excessively stretching out, leading to the utility model discloses a damage.

As shown in fig. 7, the oil cylinder 4 is connected with the driving block 41 through a fixing seat 5, the supporting plate 1 is provided with a convex rail 15, the fixing seat 5 is provided with a slide rail 51 corresponding to the convex rail 15, and the convex rail 15 is in guiding fit with the slide rail 51, so that the oil cylinder 4 drives the fixing seat 5 to slide on the supporting plate 1.

As shown in fig. 8-10, a cavity 52 and a limiting groove 53 communicated with the cavity 52 are formed in the middle of the fixing seat 5, a sliding block 40 is arranged at the end of a piston rod of the oil cylinder 4, the sliding block 40 is arranged in the cavity 52 in a penetrating manner, a resisting part 401 is arranged on the side wall of the sliding block 40 in an extending manner, and the resisting part 401 is movably arranged in the limiting groove 53; the fixed seat 5 is further symmetrically provided with passages 54 communicated with the chamber 52, the lock posts 541 are movably arranged in the passages 54 on the two sides in a penetrating manner, the supporting plate 1 is provided with the lock seat 16, the lock seat 16 is provided with lock holes 161 corresponding to the lock posts 541, when the piston rod of the oil cylinder 4 extends out, the fixed seat 5 is driven to move, the passages 54 correspond to the lock holes 161, the slide block 40 pushes the lock posts 541 on the two sides to respectively extend out of the passages 54, and the lock posts 541 are in locking fit with the lock holes 161.

When the first injection molding is performed, the piston rod of the oil cylinder 4 drives the sliding block 40 to move forward, the sliding block 40 drives the fixing seat 5 to move through the lock cylinder 541, when the lock cylinder 541 moves to a position corresponding to the lock seat 16, the piston rod continues to push forward, because the end of the sliding block 40 is provided with the first inclined surface 402, the end of the lock cylinder 541 is provided with the second inclined surface 5411 corresponding to the first inclined surface 402, the first inclined surface 402 and the second inclined surface 5411 are in guiding fit, the sliding block 40 is gradually inserted between the lock cylinders 541 at two sides, and simultaneously the lock cylinder 541 is pushed to extend out of the channel 54 towards two sides and abut against the lock hole 161 of the lock seat 16, at this time, the abutting part 401 of the sliding block 40 abuts against the end surface of the limiting groove 53, the sliding block 40 abuts against and cooperates with the end of the lock cylinder 541, and simultaneously, the lock seat 16 is in locking fit with the lock cylinder 541, so that the piston rod cannot extend forward, the limiting and the fixing function is performed for the first injection molding, after the first injection molding is finished, the oil cylinder 4 drives the piston rod to retract, the piston rod drives the slider 40 to move backwards, at this time, the blocking portion 401 of the slider 40 gradually moves towards one end of the limiting groove 53, which is away from the lock post 541, and meanwhile, the end portion of the slider 40 gradually keeps away from the lock posts 541 on the two sides, a gap is generated between the lock posts 541 on the two sides, when the blocking portion 401 of the slider 40 reaches one end of the limiting groove 53, which is away from the lock post 541, the piston rod continues to retract, the slider 40 drives the fixing base 5 to move backwards, because the third guide inclined surface 1611 is formed on the side wall of the lock hole 161, the fourth guide inclined surface 5412 is formed on one end of the lock post 541, which is close to the lock hole 161, and the lock post 541 retracts into the channel 54 through the guide cooperation of the third guide inclined surface 1611 and the fourth guide inclined surface 5412, so as to unlock the lock post 541 and the lock block, and then, the second injection molding is performed.

The utility model discloses a basic operating principle does: before the first injection molding, the driving block 41 moves forwards under the action of the oil cylinder 4, the floating seat 3 is lifted upwards in the accommodating cavity 22 under the guiding action between the sliding rail 31 and the sliding groove 411, the lifted floating seat 3 completely covers the second cavity 221, and the first injection molding is continuously carried out only by leaving a gap of the first cavity 21 to form a water tank cover main body 71; after the first injection molding is finished, the driving block 41 moves backwards under the action of the oil cylinder 4, the floating seat 3 descends downwards in the accommodating cavity 22 under the guiding action of the sliding rail 31 and the sliding groove 411, the operation of the oil cylinder 4 is suspended after descending to a clearance reaching the required space of the second cavity 221, the floating seat 3 is kept in the state and is subjected to second injection molding on the water tank cover main body 71 to form the sealing rubber ring 72, the descending height of the floating seat 3 is the height of the sealing rubber ring 72, and then mold opening is carried out.

What has just been said above is the preferred embodiment of the present invention, so all according to the utility model discloses a patent application scope structure, characteristic and principle do equivalent change or modify, all include the utility model discloses a patent application scope.

Claims (10)

1. The utility model provides a subside formula secondary injection moulding mould for tank lid, includes upper die mechanism, lower die mechanism and side form mechanism, upper die mechanism includes mould benevolence (101), side form mechanism includes side mould benevolence (103), lower die mechanism includes lower mould benevolence (102), lifting unit and backup pad (1), go up mould benevolence (101) lower mould benevolence (102) and form first die cavity (21), its characterized in that between side mould benevolence (103):

the lower die core (102) is provided with a containing cavity (22), the containing cavity (22) is communicated with the first die cavity (21), a floating seat (3) is movably arranged in the containing cavity (22), a sliding rail (31) is obliquely arranged on the side wall of the floating seat (3), the lifting assembly comprises an oil cylinder (4) arranged on the supporting plate (1) and a driving block (41) arranged at the end part of a piston rod of the oil cylinder (4), the driving block (41) is provided with a sliding groove (411) corresponding to the sliding rail (31), and when the piston rod of the oil cylinder (4) acts, the sliding rail (31) is in guiding fit with the sliding groove (411) to control the floating seat (3) to move in the containing cavity (22), so that a second die cavity (221) is formed between the floating seat (3) and the first die cavity (21).

2. A sedimentation type secondary injection molding mold for a tank lid according to claim 1, characterized in that: the supporting plate (1) is provided with a supporting block (11) corresponding to the driving block (41), the driving block (41) is provided with a first guide inclined plane (412), the supporting block (11) is provided with a second guide inclined plane (111) corresponding to the first guide inclined plane (412), and the first guide inclined plane (412) is in guide fit with the second guide inclined plane (111).

3. A sedimentation type secondary injection molding mold for a tank lid according to claim 2, characterized in that: the supporting plate (1) is provided with a limiting cover (12), and the limiting cover (12) is in limiting fit with the driving block (41).

4. A sedimentation type secondary injection molding mold for a tank lid according to claim 1, characterized in that: the horizontal inclination angle alpha of the slide rail (31) relative to the floating seat (3) is set to be 5-10 degrees.

5. A sedimentation type secondary injection molding mold for a tank lid according to claim 3, characterized in that: be equipped with first gag lever post (13) on backup pad (1), drive block (41) correspond spacing hole (413) of rectangular shape have been seted up in first gag lever post (13), spacing lid (12) correspond first locating hole (121) have been seted up in first gag lever post (13), first gag lever post (13) wear to locate first locating hole (121) and with spacing cooperation in spacing hole (413).

6. A sedimentation type secondary injection molding mold for a tank lid according to claim 3, characterized in that: the supporting plate (1) is provided with a second limiting rod (14), the driving block (41) is provided with a notch (414) corresponding to the second limiting rod (14), the limiting cover (12) is provided with a second positioning hole (122) corresponding to the second limiting rod (14), and the second limiting rod (14) penetrates through the second positioning hole (122) and is in limiting fit with the notch (414).

7. A sedimentation type secondary injection molding mold for a tank lid according to claim 1, characterized in that: hydro-cylinder (4) with connect through fixing base (5) between drive block (41), backup pad (1) is equipped with protruding rail (15), fixing base (5) correspond slide (51) have been seted up in protruding rail (15), protruding rail (15) with slide (51) direction cooperation.

8. A sedimentation type secondary injection molding mold for a tank lid according to claim 7, characterized in that: a cavity (52) and a limiting groove (53) communicated with the cavity (52) are formed in the middle of the fixing seat (5), a sliding block (40) is arranged at the end part of a piston rod of the oil cylinder (4), the sliding block (40) penetrates through the cavity (52), a resisting part (401) is arranged on the side wall of the sliding block (40) in an extending mode, and the resisting part (401) is movably arranged in the limiting groove (53); fixing base (5) still the symmetry seted up with passageway (54) of cavity (52) intercommunication, both sides lock post (541) are worn to be equipped with by passageway (54) internalization, be equipped with lock seat (16) on backup pad (1), lock seat (16) correspond lock post (541) have seted up lockhole (161), work as when the piston rod of hydro-cylinder (4) stretches out, the drive fixing base (5) motion makes passageway (54) correspond lockhole (161), and pass through slider (40) promote both sides lock post (541) stretch out respectively passageway (54), make lock post (541) with lockhole (161) locking cooperation.

9. A sedimentation type secondary injection molding mold for a tank lid according to claim 8, characterized in that: a first inclined surface (402) is formed at the end part of the sliding block (40), and a second inclined surface (5411) is formed at the end part of the lock cylinder (541) corresponding to the first inclined surface (402).

10. A sedimentation type secondary injection molding mold for a tank lid according to claim 8, characterized in that: the side wall of the lock hole (161) is provided with a third guide inclined surface (1611), one end, close to the lock hole (161), of the lock column (541) is provided with a fourth guide inclined surface (5412), and the third guide inclined surface (1611) is in guide fit with the fourth guide inclined surface (5412).

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