A pouring trolley device with a locking mechanism and a working method thereof

Abstract

The present invention relates to a casting trolley device with a self-contained locking mechanism and a working method thereof, and belongs to the field of machinery. The present invention comprises a trolley body, trolley wheels, a box card locking device and a mounting platform, wherein the trolley wheels are mounted on the lower plane of the trolley body, and mounting platforms are arranged on both sides of the trolley body, and two box card locking devices for locking the upper iron mold and the lower iron mold after the box is assembled are respectively installed on the mounting platform. The present invention has a simple and reasonable structural design, is safe and reliable, is easy to operate and maintain, has low labor intensity, is easy to realize the locking and loosening of the iron mold box of the iron-coated sand casting production line, and meets the use requirements.

Description

Technical Field

[0001] The invention relates to a device and a method, in particular to a pouring trolley device with a locking mechanism and a working method thereof, and belongs to the field of machinery. Background Art

[0002] Iron mold sand casting is a green, efficient and energy-saving casting production technology. It has become one of the typical production processes for producing high-quality castings and has been widely used in China. When iron mold sand casting is used in the production of ductile iron castings, it can make full use of the graphitization expansion characteristics of ductile iron during the solidification process to achieve riser-free casting to obtain casting products with dense internal structure. It is precisely because of the graphitization expansion characteristics of ductile iron that after the iron mold sand casting is closed, the upper and lower iron molds need to be tightly locked by the box buckle to prevent the molten iron from leaking from the parting surface of the upper and lower iron molds during the pouring and filling of the molten iron and the subsequent solidification and cooling process.

[0003] After the iron molds in the iron mold sand casting production line are closed, generally 2-4 iron mold locking devices are needed to lock the upper and lower iron molds. The box buckle is a kind of iron mold closing and locking device that is manually placed in the corresponding locking position of the iron mold and locked. Because the graphitization expansion force generated by the solidification and cooling process of ductile iron is very large, the box buckles used in the iron mold sand coating production are often very heavy. In the iron mold sand coating casting production process, the positions of the upper box buckle and the unloading box buckle are far apart, and the temperature of the pouring and cooling section of the iron mold sand coating casting production line is high. Therefore, the processes of locking the box buckle, unloading the box buckle, and transporting the box buckle have become one of the processes with the highest labor intensity and the worst operating environment in the entire iron mold sand coating casting production line.

[0004] See also Figure 1-Figure 2 It is a common box card for iron mold sand-covered casting. In the actual production of existing iron mold sand-covered casting, the box card is generally placed manually to the corresponding position of the locking box card of the upper and lower iron molds of the closed box, and then the box card is locked. The entire locking box card, unloading box card, and transportation of box card generally require manual operation, which has a large workload and labor intensity, thus restricting the mechanization and automation level of iron mold sand-covered casting production.

[0005] A Chinese patent with a publication date of July 24, 2013 and a publication number of 203076567U discloses a utility model patent entitled "A pouring trolley". The patent has a flat plate on the top, and two front wheels and two rear wheels are arranged below the flat plate, and the distance between the two front wheels is equal to the distance between the two rear wheels. The flat plate on the top of the patent is convenient for placing sand boxes, which is suitable for carrying sand boxes in automatic pouring production, and is both safe and efficient. However, the sand boxes are moved to the pouring trolley, and the sand boxes are locked. It takes a lot of effort to move the boxes, which is completely done manually. The pouring trolley is not equipped with a locking mechanism, so it still has the above-mentioned defects.

[0006] For mechanized and automated iron sand production lines, it is particularly necessary to provide a mechanical device to save the box buckle handling operation, reduce the labor intensity of production workers, and be suitable for the mechanized and automated iron mold sand casting production line to operate the iron mold box locking device. Summary of the invention

[0007] The object of the present invention is to overcome the above-mentioned shortcomings existing in the prior art and to provide a casting trolley device and its working method which has a simple and reasonable structural design, is safe and reliable, is easy to operate and maintain, has low labor intensity, and is easy to realize the locking and loosening of the iron mold box of the iron-coated sand casting production line.

[0008] The technical solution adopted by the present invention to solve the above-mentioned problem is: the casting trolley device with its own locking mechanism includes a trolley body and trolley wheels, and the trolley wheels are installed on the lower plane of the trolley body. It is characterized in that it also includes a box card locking device and a mounting platform. The mounting platform is provided on both sides of the trolley body, and two left and right box card locking devices are respectively installed on the mounting platform for locking the upper iron mold and the lower iron mold after the box is matched.

[0009] Preferably, the box card locking device of the present invention includes a box card, a locking screw, a box card mounting rod, multiple hinged connecting rods, a push rod and a push rod wheel. The box card is movably connected to the box card mounting rod, the box card mounting rod is connected to the corresponding multiple hinged connecting rods, a locking screw is installed on the upper part of the box card, and a push rod wheel is installed on the lower part of the push rod.

[0010] Preferably, the present invention further comprises a guide groove, in which the push rod of the box card locking device moves; the guide groove ensures that the two box cards on both sides of the trolley body close or open completely synchronously during the closing or opening process.

[0011] Preferably, the box card locking device of the present invention further comprises a fixed pin shaft, a round pin hole is formed on the box card mounting rod, and the box card mounting rod is connected to the corresponding hinged connecting rod via the fixed pin shaft and the round pin hole.

[0012] Preferably, the box card installation rod of the present invention is provided with a guide rod, and the box card slides up and down through the guide rod.

[0013] Preferably, the box card of the present invention is inserted into the box card installation rod, and the box card moves up and down in the box card installation rod. A plane stop is provided at the lower part of the box card installation rod, and the bottom of the box card contacts the plane stop.

[0014] Preferably, the mounting platform, the box card mounting rod and the hinged connecting rod of the present invention form a polygonal connecting rod mechanism.

[0015] Preferably, the present invention further comprises a connecting pin, and the box card installation rod in the box card locking device is installed on the left and right installation platforms on both sides of the trolley through the connecting pin; the box card installation rod rotates a certain angle with the connecting pin as the center.

[0016] The present invention also provides a working method of a pouring trolley device with a built-in locking mechanism, which is characterized by the following steps: first, the upper and lower iron molds after the box is closed are subjected to the box clamping and box clamping operations: in the initial state, the box clamping locking devices on both sides of the pouring trolley are in a fully open state; the upper and lower iron molds after the box is closed are placed on the pouring trolley; when the upper and lower iron molds after the box is closed are placed on the pouring trolley, the push rods on the box clamping locking devices on both sides of the trolley body are pushed perpendicularly to the trolley body toward the center line of the trolley body, so that the box clamping locking devices are gradually closed until the box clamps in the box clamping locking devices are completely in contact with the side surfaces of the upper and lower iron molds running edges; and the box clamps are continuously locked. The locking screw is rotated in the positive direction to reduce the distance between the bottom surface of the locking screw and the upper plane of the upper iron profile running edge, and the distance between the lower plane of the locking screw and the locking plane of the lower part of the box card is also reduced; until the lower plane of the locking screw is completely in contact with the upper plane of the upper iron profile running edge, the rotation is continued, and the lower plane of the locking screw no longer drops. As the locking screw continues to rotate, the box card as a whole rises upward along the guide rod in the box card installation rod until the locking plane of the lower part of the box card contacts the lower plane of the lower iron profile running edge; at this time, the lower plane of the locking screw in the box card is in close contact with the upper plane of the upper iron profile running edge, and the locking plane of the lower part of the box card is The upper and lower iron molds are completely locked; then, molten iron is poured into the iron mold. When the pouring is completed and the molten iron in the iron mold is completely solidified, the box card is loosened. The process is as follows: the locking screw is rotated in the opposite direction. As it rotates, the bottom plane of the locking screw remains stationary and continues to contact the upper plane of the iron mold running edge. The box card as a whole slides downward along the guide rod in the box card installation rod, so that the lower locking plane of the box card moves downward, and the distance between the upper and lower locking planes of the box card that are locked to the iron mold gradually increases. When the distance between the upper and lower locking planes of the box card is greater than the iron mold locking distance, the box card is no longer locked to the upper and lower iron molds. The box card has a locking effect, and the locking screw continues to rotate in the opposite direction. The bottom plane of the locking screw continues to contact the upper plane of the upper iron profile running edge, and the box card as a whole continues to slide down in the guide rod in the box card installation rod. The locking lower plane of the box card that plays a locking role is gradually separated from the lower plane of the lower iron profile running edge, and the distance between the bottom plane of the locking screw and the locking lower plane of the box card continues to expand; when the box card continues to slide down along the guide rod of the box card installation rod, until the lower plane of the box card hits the stop of the lower plane of the box card installation rod, the box card as a whole is stuck and no longer slides down; continue to rotate the locking screw, the lower plane of the locking screw rises upward, and the plane gradually separates from the upper plane of the upper iron profile running edge;When the lower plane of the locking screw is separated from the upper plane of the upper iron mold running edge by a certain distance, the push rods on the box card locking devices on both sides of the trolley body are pulled outward perpendicularly to the trolley body in the opposite direction of the trolley body center axis, driving the polygonal connecting rod mechanism of the box card locking devices on both sides of the trolley to gradually open the box card locking devices until they are completely separated from the side of the iron mold running edge, so that the distance between the locking devices on both sides is greater than the projection size of the iron mold width, and then the iron mold is lifted off the casting trolley. ;

[0017] Preferably, the present invention pushes or pulls the push rods on the box card locking devices on both sides of the trolley manually or mechanically.

[0018] Compared with the prior art, the present invention has the following advantages and effects: 1. The overall structural design is simple and reasonable, safe and reliable. The box card pushing and pulling devices and the locking and releasing devices are configured on the iron mold sand-covered casting production line, which can realize the automatic locking and releasing operation of the iron mold during the iron mold pouring and solidification process of the iron mold sand-covered casting production line; 2. The manual box card operation is eliminated, which greatly reduces the labor intensity of the iron mold box closing and locking; 3. The pouring trolley has a simple structure, convenient maintenance, easy operation, and good coordination with the matching locking and loosening devices; 4. It is easy to realize the mechanized and automated operation of the iron mold box closing and locking of the iron mold sand-covered casting production line. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of a locking iron-type side box buckle for ordinary iron mold sand covering.

[0020] Figure 2 This is a schematic diagram of a locking iron type axle box buckle for ordinary iron mold sand covering.

[0021] Figure 3 It is a schematic diagram of the main structure of the pouring trolley device according to an embodiment of the present invention.

[0022] Figure 4 It is a schematic diagram of the top view of the pouring trolley device according to an embodiment of the present invention.

[0023] Figure 5 It is a side structural schematic diagram of a pouring trolley device according to an embodiment of the present invention.

[0024] Figure 6 It is a schematic diagram of the main structure of the box card locking device in the pouring trolley device according to an embodiment of the present invention.

[0025] Figure 7 It is a schematic diagram of the top view of the structure of the box card locking device in the pouring trolley device according to an embodiment of the present invention.

[0026] Figure 8 It is a side structural schematic diagram of a box card locking device in a pouring trolley device according to an embodiment of the present invention.

[0027] Fig. 9 The schematic diagram of the locking process of the box card of the pouring trolley device according to the embodiment of the present invention is Figure 1 .

[0028] Fig.10 The schematic diagram of the locking process of the box card of the pouring trolley device according to the embodiment of the present invention is Figure 2 .

[0029] Fig.11 The schematic diagram of the locking process of the box card of the pouring trolley device according to the embodiment of the present invention is Figure 3 .

[0030] Fig.12 The schematic diagram of the locking process of the box card of the pouring trolley device according to the embodiment of the present invention is Figure 4 .

[0031] Fig.13 The schematic diagram of the locking process of the box card of the pouring trolley device according to the embodiment of the present invention is Figure 5 .

[0032] In the figure: trolley body 1, trolley wheel 2, box card locking device 3, mounting platform 4, guide groove 5, connecting pin 6; box card 31, locking screw 32, box card mounting rod 33, hinged connecting rod 34, fixed pin shaft 35, push rod 36, push rod wheel 37, guide rod 38, upper and lower iron molds A after the box is assembled. DETAILED DESCRIPTION

[0033] The present invention will be further described in detail below with reference to the accompanying drawings and by way of examples. The following examples are intended to explain the present invention but the present invention is not limited to the following examples.

[0034] Example

[0035] See also Figures 3 to 13 The casting trolley device with a locking mechanism in this embodiment includes a trolley body 1, trolley wheels 2, a box card locking device 3 and an installation platform 4. The trolley wheels 2 are installed on the lower plane of the trolley body 1, and the installation platforms 4 are arranged on both sides of the trolley body 1. The installation platforms 4 are respectively installed with left and right box card locking devices 3 for locking the upper iron mold and the lower iron mold after the box is matched.

[0036] See also Figure 3-Figure 5The upper plane of the trolley body 1 can carry and place the upper and lower iron molds after the box is closed; four trolley running wheels 2 are installed on the lower plane of the trolley body 1, and the trolley can move in a straight line in the direction of the running track under the action of external force; installation platforms 4 are provided on both sides of the trolley body 1, and left and right box card locking devices 3 can be installed respectively, which are used to lock the upper and lower iron molds after the box is closed; the box card locking devices 3 are installed on the left and right installation platforms 4 on both sides of the trolley with connecting pins 6, and the push rods 36 of the box card locking devices 3 can move back and forth in the guide groove 5 under the action of external force, so that the box card 31 in the box card locking device 3 is moved closer to the center line of the trolley body until the box card 31 is close to the running edge position where the iron mold needs to be locked, or the box card 31 in the box card locking device 3 is opened outward toward the center line of the trolley, so that the box card 31 in the box card locking device 3 gradually breaks away from the running edge position where the iron mold needs to be locked. The function of the guide groove 5 is to ensure that the two box cards 31 on both sides of the trolley are closed or opened completely synchronously during the closing or opening process.

[0037] See also Figure 6-Figure 8 The box card locking device 3 of this embodiment includes a box card 31, a locking screw 32, a box card mounting rod 33, a plurality of hinged connecting rods 34, a fixing pin 35, a push rod 36, and a push rod wheel 37. The box card 31 is inserted into the box card mounting rod 33, and moves up and down a certain distance in the box card mounting rod. There is a flat stopper at the lower part of the box card mounting rod. Under the action of gravity, the box card 31 stops at the flat stopper. When the upper and lower iron molds are not locked, the bottom of the box card 31 contacts the dead flat stopper, and the box card 31 is at the lowest position.

[0038] In this embodiment, one end of the box card installation rod 33 is fixed on the installation platform 4 through the connecting pin 6, and the box card installation rod 33 can rotate a certain angle with the connecting pin 6 as the center.

[0039] In this embodiment, a round pin hole is formed on the box card installation rod 33, and the box card installation rod 33 is connected to the corresponding hinged connecting rod 34 through a fixed pin shaft 35 and the round pin hole; and the two hinged rods on one side of the trolley are connected together through a push rod 36, so that the mounting platform 4 on one side of the trolley and the two box card installation rods 33 and the two hinged connecting rods 34 form a polygonal connecting rod structure, and when the push rod 36 is pushed or pulled, the two box card installation rods 33 are pushed forward or pulled back completely synchronously.

[0040] In this embodiment, a push rod wheel 37 is installed at the lower part of the push rod 36 to prevent the push rod 36 from getting stuck during the pushing and pulling process; a locking screw 32 is installed at the upper part of the box card 31. Rotating the locking screw 32 forward (clockwise) or reversely (counterclockwise) will shorten or lengthen the distance between the lower plane of the locking screw 32 and the locking plane at the lower part of the box card 31, so as to lock or loosen the upper and lower iron boxes. When the box card locking device 3 is pushed by the push rod 36, the box card 31 in the box card locking device reaches the locking position of the upper and lower iron molds, and the locking screw 32 is rotated, so that the lower plane of the locking screw 32 contacts the upper locking plane of the iron mold (the upper plane of the upper iron mold running edge), and the lower locking plane of the box card 31 is continuously rotated downward with the locking screw 32. The entire box card 31 slides and rises in the guide rod 38 in the box card mounting rod 33, and the lower locking plane of the box card 31 rises accordingly, and the distance between the lower plane of the locking screw 32 of the box card 31 and the lower locking plane of the box card 31 is gradually shortened, and finally the upper and lower iron molds are locked.

[0041] The working process of the pouring trolley device of this embodiment is shown in FIG. Figure 9-13, firstly, the upper and lower iron molds A after the box is closed are clamped and tightened: in the initial state, the box clamp locking devices 3 on both sides of the casting trolley are in a fully open state; the upper and lower iron molds after the box is closed are placed on the casting trolley; when the upper and lower iron molds after the box is closed are placed on the casting trolley of the present application document, the push rods 36 on the box clamp locking devices 3 on both sides of the trolley body 1 are manually or mechanically pushed perpendicularly to the trolley body 1 in the direction of the central axis of the trolley body 1, so that the box clamp locking devices 3 are gradually closed until the box clamps 31 in the box clamp locking devices 3 are completely in contact with the side surfaces of the upper and lower iron mold running edges; the box clamps 31 are kept in contact with the side surfaces of the iron mold running edges, and the locking screw 32 is rotated forward (clockwise) so that the bottom surface of the screw is in contact with the side surfaces of the iron mold running edges. The distance between the upper planes of the upper iron-type running edge is constantly decreasing, and at the same time, the distance between the lower plane of the locking screw 32 and the lower locking plane of the box card 31 is also constantly decreasing; until the lower plane of the locking screw 32 is completely in contact with the upper plane of the upper iron-type running edge, the rotation continues, and the lower plane of the locking screw 32 no longer drops. As the locking screw 32 continues to rotate, the box card 31 as a whole rises upward along the guide rod 38 in the box card mounting rod 33 until the lower locking plane of the box card 31 contacts the lower plane of the lower iron-type running edge; at this time, the lower plane of the locking screw 32 in the box card 31 is in close contact with the upper plane of the upper iron-type running edge, and the lower locking plane of the box card 31 is in close contact with the lower plane of the lower iron-type running edge, so that the upper and lower iron types are completely locked.Then, the iron mold can be poured with molten iron. When the pouring is completed and the molten iron in the iron mold is completely solidified, the box clamp 31 can be loosened. The process is as follows: the locking screw 32 is rotated in the opposite direction (counterclockwise). As the locking screw 32 rotates, the bottom plane of the locking screw 32 remains stationary and continues to contact the upper plane of the edge of the iron mold. The box clamp as a whole slides downward along the guide rod 38 in the box clamp mounting rod 33, so that the lower locking plane of the box clamp moves downward, and the upper and lower locks of the box clamp 31 that are locked in the iron mold are locked. The distance between the locking planes gradually increases. When the distance between the upper and lower planes of the box card locking is greater than the iron type locking distance (the distance between the upper plane of the upper iron type running edge and the lower plane of the lower iron type running edge), the box card 31 no longer has a locking effect on the upper and lower iron types, and the locking screw continues to rotate in the opposite direction (counterclockwise). The bottom plane of the locking screw 32 continues to contact the upper plane of the upper iron type running edge, and the box card as a whole continues to slide down in the guide rod 38 in the box card installation rod 33. The lock of the box card 31 plays a locking role. The lower plane of the lock is gradually separated from the lower plane of the lower iron profile running edge, and the distance between the bottom plane of the locking screw 32 and the lower plane of the box card lock is continuously expanded; when the box card continuously slides down along the guide rod 38 of the box card installation rod 33, until the lower plane of the box card hits the lower plane stop of the box card installation rod 33, the box card as a whole is stuck and no longer slides down; the locking screw 32 is continuously rotated, and the lower plane of the locking screw 32 rises upward, and the plane gradually separates from the upper plane of the upper iron profile running edge; when the lower plane of the locking screw 32 is After the surface is separated from the upper plane of the upper iron mold running edge by a certain distance, the push rods 36 on the box card locking devices 3 on both sides of the trolley body 1 are pulled outward in the opposite direction of the central axis of the trolley body 1 by hand or machine perpendicular to the trolley body 1, thereby driving the multi-link mechanism of the box card locking devices 3 on both sides of the trolley to move, and gradually open the box card locking devices 3 until they are completely separated from the side of the iron mold running edge, so that the distance between the locking devices on both sides is greater than the projection size of the iron mold width, and then the iron mold can be lifted off the casting trolley.

[0042] The working principle of the pouring trolley device with a locking mechanism in this embodiment is as follows: the casting mold for sand-coated iron casting is generally formed by combining an upper and a lower iron mold; during the pouring process of the sand-coated iron casting and the subsequent solidification and cooling process of the molten iron, the static pressure of the molten iron and the expansion force of the graphite in the solidified molten iron generate a large lifting force on the upper iron mold. For this reason, a box clamp is required to lock the upper and lower iron molds tightly together to prevent the molten iron from leaking out from the parting surface of the upper and lower iron molds during the pouring, solidification and cooling process.

[0043] The pouring trolley with a locking device in this embodiment is a device for locking the upper and lower iron molds in order to realize the mechanization and automation of the locking of the upper and lower iron molds in the process of iron mold sand casting. Figure 3-Figure 5): The box card locking device 3 is respectively installed on both sides of the trolley body 1, and each side includes two iron-type locking box cards 31. One end of the two box cards 31 is directly connected to the trolley with a connecting pin 6, and the two box cards 31 are connected together by a hinge connecting rod mechanism to form a complete connecting rod mechanism. By pushing and pulling the connecting rod mechanism, the box card 31 can be pushed to the iron-type locking area position or the box card 31 can be completely pulled out of the disengagement type locking position (or completely leave the iron-type plane projection area).

[0044] In this embodiment, a box card locking device 3 composed of two sets of hinged connecting rods is arranged on a casting trolley for a mechanized and automated iron mold sand-coated casting production line. By pushing or pulling out the entry and exit device of the device, the box card mechanism can enter or leave the iron mold locking position area, and then the iron mold can be locked or released manually or mechanically.

[0045] The pouring trolley device of this embodiment is mainly used for the pouring section of the mechanized iron mold sand-coated casting production line. In the molten iron pouring section, it is equipped with a box tightening clamp and a box loosening clamp matching device, so that the upper and lower iron molds after the box is closed on the trolley can be locked before entering the pouring station, and the upper and lower iron mold box clamps can be loosened after entering the solidification and cooling completion station.

[0046] Through the above description, those skilled in the art can already implement it.

[0047] In addition, it should be noted that the shapes and names of the parts and components of the specific embodiments described in this specification may be different, and the above content described in this specification is only an example of the structure of the present invention. All equivalent changes or simple changes made based on the structure, features and principles described in the patent concept of the present invention are included in the protection scope of the patent of the present invention. Technicians in the technical field of the present invention can make various modifications or supplements to the specific embodiments described or replace them in a similar manner, as long as they do not deviate from the structure of the present invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

Claims

1. A casting trolley device with a locking mechanism, comprising a trolley body and trolley wheels, wherein the trolley wheels are mounted on the lower plane of the trolley body, characterized in that: It also includes a box card locking device, a mounting platform and a connecting pin rod. The mounting platforms are arranged on both sides of the trolley body, and two left and right box card locking devices for locking the upper iron type and the lower iron type after the box is matched are respectively installed on the mounting platforms; the box card locking device includes a box card, a locking screw, a box card mounting rod, a hinged connecting rod, a push rod and a push rod wheel. The box card is movably connected to the box card mounting rod, a locking screw is installed on the upper part of the box card, and a push rod wheel is installed on the lower part of the push rod; the mounting platform, the box card mounting rod and the hinged connecting rod form a polygonal connecting rod mechanism; the box card locking device also includes a fixed pin shaft, a round pin hole is opened on the box card mounting rod, and the box card mounting rod is connected to the corresponding hinged connecting rod through the fixed pin shaft and the round pin hole; the box card mounting rod is installed on the left and right mounting platforms on both sides of the trolley body through the connecting pin rod; the two hinged rods on one side of the trolley are connected together through the push rod.

2. The pouring trolley device with a locking mechanism according to claim 1, characterized in that: It also includes a guide groove, and the push rod of the box card locking device moves in the guide groove.

3. The pouring trolley device with a locking mechanism according to claim 1, characterized in that: The box card installation rod is provided with a guide rod, and the box card slides up and down through the guide rod.

4. The pouring trolley device with a locking mechanism according to claim 1, characterized in that: The box card is inserted into the box card installation rod, and the box card moves up and down in the box card installation rod. A plane stop is arranged at the lower part of the box card installation rod, and the bottom of the box card contacts the plane stop.

5. A working method of a pouring trolley device with a self-locking mechanism, using the pouring trolley device with a self-locking mechanism according to any one of claims 1 to 4, characterized in that: Here are the steps: First, the upper and lower iron molds after the box is closed are clamped and tightened: in the initial state, the box clamp locking devices on both sides of the casting trolley are in a fully open state; the upper and lower iron molds after the box is closed are placed on the casting trolley; when the upper and lower iron molds after the box is closed are placed on the casting trolley, the push rods on the box clamp locking devices on both sides of the trolley body are pushed perpendicularly to the trolley body toward the center line of the trolley body, so that the box clamp locking devices are gradually closed until the box clamps in the box clamp locking devices are completely in contact with the side surfaces of the upper and lower iron mold running edges; continue to keep the box clamps in contact with the side surfaces of the iron mold running edges, and rotate the locking screw forward so that the bottom surface of the locking screw is in contact with the upper iron mold running edges. The distance between the upper planes of the upper iron profile running edge is constantly reduced, and at the same time, the distance between the lower plane of the locking screw and the locking plane at the bottom of the box card is also constantly reduced; until the lower plane of the locking screw is completely in contact with the upper plane of the upper iron profile running edge, the rotation continues, and the lower plane of the locking screw no longer drops. As the locking screw continues to rotate, the box card as a whole rises upward along the guide rod in the box card installation rod until the locking plane at the bottom of the box card contacts the lower plane of the lower iron profile running edge; at this time, the lower plane of the locking screw in the box card is in close contact with the upper plane of the upper iron profile running edge, and the locking plane at the bottom of the box card is in close contact with the lower plane of the lower iron profile running edge, and the upper and lower iron profiles are completely locked; Then pour molten iron into the iron mold. When the pouring is completed and the molten iron in the iron mold is completely solidified, loosen the box card. The process is as follows: rotate the locking screw in the opposite direction. As it rotates, the bottom plane of the locking screw remains stationary and continues to contact the upper plane of the iron mold running edge. The box card as a whole slides downward along the guide rod in the box card installation rod, so that the lower locking plane of the box card moves downward, and the distance between the upper and lower locking planes of the box card that are locked to the iron mold gradually increases. When the distance between the upper and lower locking planes of the box card is greater than the locking distance of the iron mold, the box card does not Then the upper and lower iron molds have a locking effect, and the locking screw continues to rotate in the opposite direction. The bottom plane of the locking screw continues to contact the upper plane of the upper iron mold running edge, and the box card as a whole continues to slide down in the guide rod in the box card installation rod. The locking lower plane of the box card that has a locking effect is gradually separated from the lower plane of the lower iron mold running edge, and the distance between the bottom plane of the locking screw and the locking lower plane of the box card continues to expand; when the box card continues to slide down along the guide rod of the box card installation rod, until the lower plane of the box card hits the stop of the lower plane of the box card installation rod, the box card as a whole is stuck and no longer slides down; Continue to rotate the locking screw, the lower plane of the locking screw rises upward, and the plane gradually separates from the upper plane of the upper iron mold running edge; when the lower plane of the locking screw separates from the upper plane of the upper iron mold running edge by a certain distance, pull the push rods on the box card locking devices on both sides of the trolley body perpendicular to the trolley body in the opposite direction of the central axis of the trolley body, thereby driving the polygonal connecting rod mechanism of the box card locking devices on both sides of the trolley to gradually open the box card locking devices until they are completely separated from the side of the iron mold running edge, so that the distance between the locking devices on both sides is greater than the projection size of the iron mold width, and then the iron mold is lifted off the casting trolley.

6. The working method of the pouring trolley device with a locking mechanism according to claim 5, characterized in that: Push or pull the push rods on the box card locking devices on both sides of the trolley manually or mechanically.

Images