Aluminum alloy low-pressure casting embedded insert upper die positioning and locking device

Abstract

The utility model discloses an aluminum alloy low-pressure casting embedded insert upper die positioning and locking device, which relates to the technical field of motor end cover low-pressure casting, and structurally comprises a hoisting main body, an upper die body is fixedly connected to the bottom of the hoisting main body, an insert body is sleeved outside the upper die body, and heat dissipation holes are formed in the back surface of the hoisting main body. Inserting assemblies are arranged on the two sides of the interior of the hoisting body, a containing groove is formed in the bottom of the hoisting body, and the heat dissipation holes communicate with the containing groove. According to the positioning and locking device for the aluminum alloy low-pressure casting embedded insert upper die, it is guaranteed that the insert body cannot be extruded and abraded while the good fixing effect on the insert body is achieved, the casting quality of a motor end cover is improved, the process complexity in the die production process is reduced, fixing of various different insert bodies is achieved, more process choices can be provided, and the production efficiency is improved. And the casting accuracy of the casting is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor end cover low pressure casting technical field, concretely is a kind of aluminium alloy low pressure casting pre-buried insert upper die positioning locking device. BACKGROUND

[0002] With the development of new energy vehicles, the demand for new energy motor end covers is increasing, and the new energy motor end cover refers to the cover at both ends of the motor shell, which is generally divided into front end cover and rear end cover. The end cover is fixed on the machine base by screwing or riveting, which supports and protects the motor rotor. The motor end cover has a complex outer shape structure, and many concave-convex structures are designed on the end face to enhance heat dissipation and improve mechanical strength. In the past, the material of the motor end cover was mostly cast iron. With the demand for lightweight, cast iron parts are gradually replaced by aluminum alloy. Currently, most aluminum alloy motor end covers are produced by low-pressure casting first and then machining. The form of pre-embedded inserts in the mold is common in the field of casting molds. At many times, iron inserts (iron inserts or inserts containing iron components) are applied. In the fully automatic production process, the iron inserts on the product are placed on the mold by a robot. At this time, if there is no suitable structure to position the iron inserts, the inserts may fall off during the production process of the mold, thereby requiring an aluminum alloy low-pressure casting pre-embedded insert upper die positioning locking device.

[0003] The existing aluminum alloy low-pressure casting pre-embedded insert upper die positioning locking device usually uses a spring to tightly fix the insert on the surface of the upper die during casting. However, the spring may be too tight or too loose. When the spring is too tight, it easily wears the surface of the insert, reducing the production quality of the final casting. When the spring is too loose, the effect of fixing the insert is not good, and the insert is easily detached from the upper die, causing the casting to be scrapped and the mold to be damaged. Therefore, an aluminum alloy low-pressure casting pre-embedded insert upper die positioning locking device is needed to solve the above problems. UTILITY MODEL CONTENTS

[0004] (I) Technical problem solved

[0005] To overcome the shortcomings of the prior art, the utility model provides an aluminum alloy low-pressure casting pre-embedded insert upper die positioning locking device, which solves the problem that the insert is fixed on the surface of the upper die during casting by using a spring. However, the spring may be too tight or too loose. When the spring is too tight, it easily wears the surface of the insert, reducing the production quality of the final casting. When the spring is too loose, the effect of fixing the insert is not good, and the insert is easily detached from the upper die, causing the casting to be scrapped and the mold to be damaged.

[0006] (II) Technical solution

[0007] In order to achieve the above object, the utility model discloses a kind of aluminum alloy low-pressure casting pre-buried insert upper die positioning locking device, including hoisting main body, the bottom of the hoisting main body is fixedly connected with upper die body, the outside of the upper die body is equipped with insert body, the back of the hoisting main body is equipped with heat dissipation hole, heat generated when micro motor works can be dissipated through heat dissipation hole, reduce the influence of high heat on the internal components of device in the morning, prolong the service life of device, the inside of the hoisting main body is provided with plug-in assembly on both sides, the bottom of the hoisting main body is equipped with accommodating groove, heat dissipation hole and accommodating groove are mutually penetrated, the inside of the upper die body is provided with power component, the inside of the upper die body is fixedly connected with fixed sleeve on both sides, the inside of the fixed sleeve is slidably connected with top rod, the both sides of the upper die body are equipped with first through-hole, the both sides of the inside of the insert body are equipped with second through-hole, the both sides of the top of the insert body are equipped with slot, second through-hole and slot are mutually penetrated, one end of top rod sequentially passes through first through-hole and second through-hole and extends to the inside of slot, the plug-in assembly includes sliding slot, the sliding slot is equipped in the bottom of hoisting main body on both sides, the inside of the sliding slot is slidably connected with plug, the top of plug is elastically connected with tension spring between the inner wall of sliding slot, the side of plug is equipped with clamping groove.

[0008] Traditional low-pressure casting is by separately pouring insert body and casting, and then assembling them, which can cause the insert body and casting to be unable to be engaged due to size difference, or a large gap between the insert body and casting, resulting in low quality of the final product, or the existing method is to make the whole mold of the casting, i.e. the whole casting mold with the insert body, which makes the mold manufacturing process more difficult. In the utility model, the insert body is hung on the upper die, and then the aluminum alloy liquid is poured into the insert body through low-pressure casting, and after cooling and forming, the casting and the insert body are demolded together, and then the insert body is ejected from the casting, so that the insert body and the casting are tightly connected, avoiding the insert body and the casting having a sandwich layer, making the insert positioning more accurate, and by separately casting the insert body and then jointly casting with the casting, the complexity of the mold production process is reduced, i.e. the process is greatly optimized, which can provide more process options.

[0009] Preferably, the bottom of the plug is inserted into the inside of the slot, and one end of the top rod sequentially passes through the first through-hole and the second through-hole and extends to the inside of the slot and the clamping groove.

[0010] Preferably, the lifting body is provided with a movable hole on both sides, the movable hole is communicated with one side of the sliding groove, one side of the plug is fixedly connected with a push handle, one end of the push handle extends to the outside of the lifting body through the movable hole.

[0011] When the insert body is fixed on the surface of the upper mold body, the plug is inserted into the insertion slot, and one end of the top rod is connected with the clamping groove through the power assembly, so that the locking and fixing between the insert body and the upper mold body is realized, and the loosening of the insert body during the common pouring with the casting is avoided, the stability of the insert body and the upper mold body during locking is improved, and when the casting is cooled and needs to be demolded, the top rod is reversely moved through the power assembly, so that the top rod is separated from the clamping groove, and then the insert body is separated from the upper mold body, which is simple and convenient.

[0012] Preferably, the front surface and the back surface of the plug are fixedly connected with a limiting block, and the inner surface of the sliding groove is provided with a limiting slot.

[0013] Through the setting of the limiting block and the limiting slot, the plug can be prevented from separating from the inside of the sliding groove, and the movement track of the plug during use is more stable.

[0014] Preferably, the height of the limiting slot is equal to the length of the plug completely exposed, and the length of the plug completely exposed is equal to the depth of the insertion slot.

[0015] By setting the length of the plug completely exposed and the depth of the insertion slot to be equal, when the plug is inserted into the inside of the insertion slot, the top of the insert body is just flush with the bottom of the lifting body and just fits, so that the gap between the insert body and the lifting body is avoided to cause the quality problem of the aluminum alloy liquid during pouring and forming, and by setting the height of the limiting slot and the length of the plug completely exposed to be equal, when the plug is pulled into the sliding groove by the tension spring, the bottom of the plug is flush with the bottom of the lifting body, so that the appearance of the whole device is more integrated and unified, and more beautiful.

[0016] Preferably, the power assembly comprises a mounting seat, the number of the mounting seat is two, one side of one of the mounting seats is fixedly provided with a micro motor, the output end of the micro motor is fixedly connected with a worm, and one end of the worm is rotatably connected to the surface of the other mounting seat.

[0017] Preferably, the inner surface of the lifting body and the inside of the upper mold body are rotatably connected with a rotating rod, the surface of the rotating rod is fixedly connected with a worm wheel, and the worm wheel and the worm are meshingly connected.

[0018] Preferably, the surface of the rotating rod is fixedly connected with a gear, one end of the top rod is fixedly connected with a connecting plate, the two connecting plates are centrally symmetrically distributed around the center of the gear, the surface of the connecting plate is provided with a tooth groove, and the surface of the gear is in meshing connection with the two tooth grooves.

[0019] The power assembly enables the relative movement of the top rods on both sides, thereby enabling the clamping and disengaging between the top rods on both sides inside the upper mold and the clamping groove, and facilitating the locking and disengaging between the insert body and the upper mold body.

[0020] Preferably, the top of the fixing sleeve is provided with a positioning hole, and the top of the top rod is fixedly connected with a positioning block, the positioning block passes through the inside of the positioning hole and extends to the top side of the fixing sleeve, the positioning block and the positioning hole can ensure the normal operation of the gear in the tooth groove, prevent the gear from disengaging from the tooth groove, and enable the top rod to be clamped in the inside of the clamping groove without being too tight or too loose, thereby reducing the over-tightening or over-loosening of the top rod and the insert block when the top rod is pressed against the insert block, and achieving good clamping of the top rod to the insert block without over-tightening the insert block.

[0021] (Three) beneficial effects

[0022] The utility model provides a kind of aluminum alloy low-pressure casting pre-buried insert upper die positioning locking device.It has the following beneficial effects:

[0023] (One), the aluminum alloy low-pressure casting pre-buried insert upper die positioning locking device, through the setting of positioning block and positioning hole, the top rod can be clamped in the inside of the clamping groove without being too tight or too loose, which ensures good fixing effect of the insert body without extruding and wearing the insert body, and improves the casting quality of the motor end cover.

[0024] (Two), the aluminum alloy low-pressure casting pre-buried insert upper die positioning locking device, through the clamping between the top rod and the clamping groove to realize the locking and demolding between the insert body and the upper mold body, the insert body can be fixed on the surface of the upper mold during low-pressure casting, so that the insert is in a more stable state during low-pressure casting, which reduces the risk of falling or even deviation of the insert body, and improves the quality of the casting during production.

[0025] (Three), the aluminum alloy low pressure casting pre-embedded insert upper die positioning and locking device, through the insert body is hung in the upper die, and then the aluminum alloy liquid is poured together with the insert body through the low pressure casting, which can make the insert body and the casting closely fit, avoid the insert body and the casting have interlayer, make the insert positioning more accurate, and through the insert body is separately cast and then cast together with the casting, reduce the complexity of the process when the mold is produced.

[0026] (Four), the aluminum alloy low pressure casting pre-embedded insert upper die positioning and locking device, through the clamping of the jack and the clamping groove, the disassembly and assembly between the insert body and the upper die body can be realized, so that the insert body can be replaced, the fixation of various different insert bodies can be realized, and more process selection can be provided.

[0027] (Five), the aluminum alloy low pressure casting pre-embedded insert upper die positioning and locking device, the length of the plug block completely exposed is equal to the depth of the insertion groove, when the plug block is completely inserted into the inside of the insertion groove, the top of the insert body is just flush with the bottom of the hoisting main body and just fits, which avoids the gap between the insert body and the hoisting main body, so that the quality problem of the aluminum alloy liquid entering the gap during pouring is avoided, and the precision of the casting during casting is improved. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is a structure schematic view of the whole front surface of the utility model;

[0029] Figure 2 It is a structure schematic view of the whole back surface of the utility model;

[0030] Figure 3 It is a bottom view of the hoisting main body of the utility model;

[0031] Figure 4 It is a structure schematic view of the inside of the upper die body of the utility model;

[0032] Figure 5 It is a structure schematic view of the first through hole of the utility model;

[0033] Figure 6 It is a structure schematic view of the insert body of the utility model;

[0034] Figure 7 It is a structure schematic view of the plug-in assembly of the utility model;

[0035] Figure 8 It is a side view of the sliding groove of the utility model;

[0036] Figure 9 It is a structure schematic view of the power assembly of the utility model;

[0037] Figure 10The utility model discloses a positioning hole and positioning block structure schematic view.

[0038] In the drawing: 1, hoist main body, 2, upper die body, 3, insert body, 4, heat dissipation hole, 5, plug-in assembly, 51, sliding slot, 52, plug block, 53, tension spring, 54, clamping groove, 55, movable hole, 56, push handle, 57, limiting block, 58, limiting groove, 6, accommodating groove, 7, power assembly, 71, mounting seat, 72, micro motor, 73, worm, 74, rotating rod, 75, worm wheel, 76, gear, 77, connecting plate, 78, gear slot, 79, positioning hole, 710, positioning block, 8, fixed sleeve, 9, jacking rod, 10, first through hole, 11, second through hole, 12, insertion slot. DETAILED DESCRIPTION

[0039] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0040] Reference Figures 1-10 The utility model provides a kind of technical scheme: a kind of aluminum alloy low-pressure casting pre-buried insert upper die positioning locking device, its structure includes hoist main body 1, the bottom of hoist main body 1 is fixedly connected with upper die body 2, the outside of upper die body 2 is equipped with insert body 3, the back of hoist main body 1 is equipped with heat dissipation hole 4, the inside two sides of hoist main body 1 are provided with plug-in assembly 5, the bottom of hoist main body 1 is equipped with accommodating groove 6, heat dissipation hole 4 and accommodating groove 6 are mutually penetrated, power assembly 7 is provided in the inside of upper die body 2, the inside two sides of upper die body 2 are fixedly connected with fixed sleeve 8, fixed sleeve 8 is slidably connected with jacking rod 9 in the inside, the two sides of upper die body 2 are equipped with first through hole 10, the two sides of the inside of insert body 3 are equipped with second through hole 11, the two sides of the top of insert body 3 are equipped with insertion slot 12, second through hole 11 and insertion slot 12 are mutually penetrated between the inside, the end of jacking rod 9 is sequentially through first through hole 10 and second through hole 11 and extends to the inside of insertion slot 12, plug-in assembly 5 includes sliding slot 51, sliding slot 51 is equipped in the bottom two sides of hoist main body 1, plug block 52 is slidably connected in the inside of sliding slot 51, tension spring 53 is elastically connected between the top of plug block 52 and the inner wall of sliding slot 51, one side of plug block 52 is equipped with clamping groove 54.

[0041] Specifically, when the aluminum alloy motor end cover is low-pressure cast, the insert body 3 is first fixed on the surface of the upper mold body 2, and then low-pressure casting is performed, and the cast end cover casting is taken out of the upper mold, and the insert body 3 is taken out of the casting at the same time, and then the insert body 3 can be taken out of the casting, and the insert body 3 is hung upside down on the surface of the upper mold body 2, so that the casting gap between the casting and the insert body 3 is smaller, and the casting and the insert body 3 are more closely fitted, and the casting quality is higher. When the motor end cover is cast, first press down the push handle 56 to drive the insert block 52 to move downward until the bottom of the insert block 52 is completely exposed, then the insert body 3 is sleeved on the surface of the upper mold body 2, and the insert block 52 is aligned with the insertion slot 12 and inserted, then the power assembly 7 drives the top rod 9 to slide until one end of the top rod 9 passes through the first through hole 10 and the second through hole 11 in turn and is clamped with the clamping groove 54, so that the insert body 3 is fixed on the surface of the upper mold body 2, then the aluminum alloy liquid is poured into the mold and formed by low-pressure casting process, and the casting needs to be demolded after forming. When demolding, the power assembly 7 drives the top rod 9 to disengage from the clamping groove 54, and then the insert block 52 is returned to the sliding slot 51 under the pulling of the tension spring 53, and then the casting and the insert body 3 are integrally demolded. Finally, the insert body 3 can be separated from the demolded casting. By hanging the cast insert body 3 upside down in the mold and then pouring together with the casting, the casting and the insert body 3 can be more accurately fitted, reducing the situation that the size of the casting and the insert body 3 is not suitable when casting alone. And through the setting of the top rod 9 and the clamping groove 54, the insert body 3 can be more stable during pouring, reducing the situation that it loosens and deviates during pouring, so that the casting quality of the end cover is better.

[0042] Wherein the bottom of the insert block 52 is inserted into the insertion slot 12, and one end of the top rod 9 passes through the first through hole 10 and the second through hole 11 in turn and extends into the insertion slot 12 and is clamped with the clamping groove 54.

[0043] Wherein the two sides of the lifting main body 1 are provided with movable holes 55, the movable holes 55 and one side of the sliding slot 51 are mutually penetrated, one side of the insert block 52 is fixedly connected with the push handle 56, and one end of the push handle 56 penetrates through the movable hole 55 and extends to the outside of the lifting main body 1.

[0044] Wherein the front and back surfaces of the insert block 52 are fixedly connected with the limiting block 57, and the inner surface of the sliding slot 51 is provided with the limiting slot 58, and the limiting block 57 is slidingly connected in the limiting slot 58.

[0045] Wherein the height of the limiting slot 58 is equal to the length of the completely exposed insert block 52, and the length of the completely exposed insert block 52 is equal to the depth of the insertion slot 12.

[0046] Specifically, since the height of the limiting groove 58 of the plug 52 is equal to the length of the plug 52 completely exposed, and the length of the plug 52 completely exposed is equal to the depth of the slot 12, the plug 52 is just fitted between the slot 12 when it is pressed to the bottom end, and the bottom of the plug 52 is flush with the bottom of the hoisting body 1 when the plug 52 is pulled to the top end by the tension spring 53, that is, when the limiting block 57 is at the top of the limiting groove 58, so that the surface of the top of the casting can be smooth when the insert body 3 is not poured.

[0047] The power assembly 7 comprises two mounting seats 71, one side of one of the mounting seats 71 is fixedly provided with a micro motor 72, the output end of the micro motor 72 is fixedly connected with a worm 73, one end of the worm 73 is rotatably connected to the surface of the other mounting seat 71.

[0048] The inner surface of the hoisting body 1 and the inner surface of the upper die body 2 are rotatably connected with a rotating rod 74, the surface of the rotating rod 74 is fixedly connected with a worm wheel 75, and the worm wheel 75 is meshingly connected with the worm 73.

[0049] The surface of the rotating rod 74 is fixedly connected with a gear 76, one end of the ejector rod 9 is fixedly connected with a connecting plate 77, the two connecting plates 77 are centrally and symmetrically distributed around the center of the gear 76, the surface of the connecting plate 77 is provided with a tooth groove 78, and the surface of the gear 76 is meshingly connected with the two tooth grooves 78.

[0050] Specifically, when the power assembly 7 works, the micro motor 72 is first started to work by an external controller, the micro motor 72 drives the worm wheel 75 to rotate through the worm 73, the worm wheel 75 drives the rotating rod 74 to rotate, the rotating rod 74 drives the gear 76 to rotate, the gear 76 rotates to make the two connecting plates 77 move relatively through the meshing between the gear 76 and the tooth groove 78, so that the two ejector rods 9 can move relatively, and the ejector rod 9 and the clamping groove 54 can be clamped and separated, so that the locking and separation between the insert body 3 and the upper die body 2 can be facilitated.

[0051] The top of the fixing sleeve 8 is provided with a positioning hole 79, and the top of the ejector rod 9 is fixedly connected with a positioning block 710, the positioning block 710 extends to the top side of the fixing sleeve 8 through the inside of the positioning hole 79.

[0052] After the plug-in block 52 is plugged into the bottom side of the slot 12, the power assembly 7 drives one end of the top rod 9 to pass through the inside of the first through hole 10 and the second through hole 11 in turn and be clamped with the clamping groove 54. Since the positioning hole 79 is fixed on the fixed sleeve 8, and the positioning block 710 moves on the top rod 9 as the top rod 9 moves, the relative movement occurs between the positioning block 710 and the positioning hole 79. Due to the restriction of the positioning block 710 and the positioning hole 79, when the positioning block 710 moves to the leftmost end of the positioning hole 79, the one end of the top rod 9 is just clamped completely inside the clamping groove 54. Then the power assembly 7 drives the top rod 9 to move reversely. Due to the restriction of the positioning block 710 and the positioning hole 79, when the positioning block 710 moves to the rightmost end of the positioning hole 79, the one end of the top rod 9 moves to just flush with the outer surface of the upper die body 2. The one end of the top rod 9 is provided with an arc surface matched with the surface of the upper die body 2. The inner surface of the clamping groove 54 is provided with an arc surface matched with the surface of the one end of the top rod 9. Through the arrangement of the positioning block 710 and the positioning hole 79, the insert body 3 can be fixed on the surface of the upper die body 2 to make the one end of the top rod 9 completely clamped with the clamping groove 54, so that the top rod 9 can be clamped with the clamping groove 54. The connection between the top rod 9 and the plug-in block 52 is avoided to be too tight or too loose. In addition, when the insert body 3 is separated from the upper die body 2, the one end of the top rod 9 is connected with the outer surface of the upper die body 2, which ensures the flatness of the appearance of the upper die body 2. Through the arrangement of the positioning block 710 and the positioning hole 79, the connection between the connecting plates 77 on both sides and the gear 76 is prevented from slipping, and the collision between the top rods 9 on both sides and the connecting plates 77 is prevented, which ensures the normal meshing work between the gear 76 and the gear slot 78.

[0053] When working, when the aluminum alloy motor end cover is low pressure casting, first, the insert body 3 is fixed on the surface of the upper mold body 2, wherein the insert body 3 is the bearing steel sleeve on the motor end cover, when fixing, the push handle 56 is pressed downward, the push handle 56 drives the plug block 52 to move downward in the sliding groove 51 through the movable hole 55, until the limiting block 57 moves to the bottom side of the limiting groove 58, then the insert body 3 is sleeved on the outside of the upper mold body 2, and the plug slot 12 is aligned with the plug block 52 and is inserted, then the micro motor 72 is started by the external controller to drive the worm 73 to rotate, the worm 73 drives the rotating rod 74 to rotate through the worm gear 75, the gear 76 on the rotating rod 74 drives the connecting plates 77 on both sides to move relatively left and right through the tooth groove 78, so that the top rods 9 on both sides move relatively, until one end of the top rod 9 passes through the first through hole 10 and the second through hole 11 in turn and is clamped with the clamping groove 54, so that the insert body 3 is locked on the outer surface of the upper mold body 2, then the aluminum alloy liquid is poured in the mold, then the motor end cover is low pressure casting, after cooling, the castings need to be demolded, when demolding, the micro motor 72 is started to drive the worm 73 to move reversely, similarly, the top rods 9 in the upper mold body 2 move reversely, so that the top rod 9 is separated from the clamping groove 54, the plug block 52 is separated from the plug slot 12 under the pulling of the tension spring 53, then the castings with the insert body 3 are demolded, then the insert body 3 is ejected from the castings, and the insert body 3 can be embedded in the castings for use in the later period, so that the low pressure casting of the motor end cover is completed.

[0054] It should be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the presence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0055] Although the embodiments of the present application have been shown and described, it is to be understood that for the purpose of the present application, the embodiments change, modify, replace, and vary in many ways without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An upper mold positioning and locking device for an aluminum alloy low-pressure casting embedded insert, comprising a hoisting main body (1), characterized in that: The bottom of the hoisting body (1) is fixedly connected with an upper die body (2), the outer part of the upper die body (2) is sleeved with an insert body (3), the back of the hoisting body (1) is provided with a heat dissipation hole (4), the inside of the hoisting body (1) is provided with plug-in assemblies (5) on both sides, the bottom of the hoisting body (1) is provided with a containing groove (6), the heat dissipation hole (4) and the containing groove (6) are mutually penetrated, the inside of the upper die body (2) is provided with a power assembly (7), the inside of the upper die body (2) is fixedly connected with fixed sleeves (8) on both sides, the inside of the fixed sleeve (8) is slidably connected with a jacking rod (9), the both sides of the upper die body (2) are provided with first through holes (10), the both sides of the inside of the insert body (3) are provided with second through holes (11), the both sides of the top of the insert body (3) are provided with insertion grooves (12), the inside of the second through hole (11) and the insertion groove (12) are mutually penetrated, one end of the jacking rod (9) penetrates the first through hole (10) and the second through hole (11) in sequence and extends to the inside of the insertion groove (12), the plug-in assembly (5) comprises a sliding groove (51), the sliding groove (51) is provided on the bottom of the hoisting body (1) on both sides, the inside of the sliding groove (51) is slidably connected with an insertion block (52), the top of the insertion block (52) and the inner wall of the sliding groove (51) are jointly and elastically connected with a tension spring (53) between them, one side of the insertion block (52) is provided with a clamping groove (54).

2. The mold positioning and locking device for the upper mold of the aluminum alloy low-pressure casting pre-embedded insert according to claim 1, characterized in that: The bottom of the insertion block (52) is inserted into the inside of the insertion groove (12), one end of the jacking rod (9) penetrates the first through hole (10) and the second through hole (11) in sequence and extends to the inside of the insertion groove (12) and the clamping groove (54) is clamped.

3. The mold positioning and locking device for a pre-embedded insert in low pressure casting of an aluminum alloy according to claim 1, characterized in that: The both sides of the hoisting body (1) are provided with movable holes (55), the movable hole (55) and one side of the sliding groove (51) are mutually penetrated, one side of the insertion block (52) is fixedly connected with a push handle (56), one end of the push handle (56) penetrates the movable hole (55) and extends to the outside of the hoisting body (1).

4. The mold positioning and locking device for a pre-embedded insert in low pressure casting of an aluminum alloy according to claim 1, characterized in that: The front face and the back face of the insertion block (52) are fixedly connected with limiting blocks (57), the inner surface of the sliding groove (51) is provided with limiting grooves (58), the limiting blocks (57) are slidably connected in the inside of the limiting grooves (58).

5. The mold positioning and locking device for a pre-embedded insert in low pressure casting of an aluminum alloy as set forth in claim 4, characterized in that: The height of the limiting groove (58) is equal to the length of the insertion block (52) completely exposed, the length of the insertion block (52) completely exposed is equal to the depth of the insertion groove (12).

6. The mold positioning and locking device for a pre-embedded insert in low pressure casting of an aluminum alloy according to claim 1, characterized in that: The power assembly (7) comprises mounting seats (71), the number of the mounting seats (71) is two, one side of one of the mounting seats (71) is fixedly mounted with a micro motor (72), the output end of the micro motor (72) is fixedly connected with a worm (73), one end of the worm (73) is rotatably connected to the surface of the other mounting seat (71).

7. The mold positioning and locking device for a pre-embedded insert of an aluminum alloy low-pressure casting according to claim 6, characterized in that: The inner surface of the hoisting body (1) and the inside of the upper die body (2) are jointly and rotatably connected with a rotating rod (74), the surface of the rotating rod (74) is fixedly connected with a worm wheel (75), the worm wheel (75) and the worm (73) are meshingly connected.

8. The mold positioning and locking device for a pre-embedded insert in low pressure casting of an aluminum alloy according to claim 7, characterized in that: The surface of the rotating rod (74) is fixedly connected with a gear (76), one end of the top rod (9) is fixedly connected with a connecting plate (77), the two connecting plates (77) are centrally symmetrically distributed around the center of the gear (76), the surface of the connecting plate (77) is provided with a tooth groove (78), and the surface of the gear (76) is in meshing connection with the two tooth grooves (78).

9. The mold positioning and locking device for a pre-embedded insert in low pressure casting of an aluminum alloy according to claim 1, characterized in that: The top of the fixing sleeve (8) is provided with a positioning hole (79), and the top of the top rod (9) is fixedly connected with a positioning block (710). The positioning block (710) penetrates the inside of the positioning hole (79) and extends to the top side of the fixing sleeve (8).

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