Die overturning and preheating device

Abstract

The utility model provides a die overturning and preheating device which comprises a die overturning device and a die preheating device. The mold turnover device comprises a mold conveying mechanism and a mold turnover mechanism. According to the utility model, off-line preheating of the dies which are stacked up and down is realized, so that the production efficiency is effectively improved; the mold can also be turned over by 180 degrees; the mold preheating efficiency is higher, and the occupied space of the mold preheating device is effectively reduced; the structure is relatively simple and suitable for popularization.

Description

Technical Field

[0001] The utility model belongs to the technical field of turnover and heating of metal forgings during operation and transportation, and relates to a mold turnover and preheating device. Background Art

[0002] Large and complex steel parts can be manufactured by multi-station die forging, which has the characteristics of high production efficiency and material cost saving compared with machining. The multi-station hot forging integral forming technology of upper and lower die opening method, the die is divided into upper die and lower die, and has multiple processing stations that cooperate with each other; therefore, this group of dies has the characteristics of heavy weight and complex structure. In order to meet production needs, the die needs to be repaired, replaced or processed regularly. Before the upper and lower dies are repaired, replaced or processed, the die needs to be turned 180°. Secondly, in order to protect the die and improve the efficiency of die use, it is very necessary to keep the die working state in a certain temperature range. If the die is not preheated, due to the low temperature of the die, it is easy to cause difficulty in forming the heel end of the rail, damage to the die, and even cause the die to burst.

[0003] Under the existing technology, the mold is turned by crane. During the turning process, the mold is not firmly fixed and is prone to violent collision. In serious cases, it will cause damage and deformation to the mold. Therefore, it is necessary to design a special mold turning device to ensure the convenience and stability of the mold turning process.

[0004] Moreover, the mold preheating method under the existing technology is to place the mold on the press, place the preheater between the upper mold and the lower mold, and wait until the mold reaches the preheating temperature before starting production. Since the mold preheating time is long, the mold preheating step will greatly reduce production efficiency when there are many types of production tasks. In this regard, it is necessary to design a special mold preheating device to realize the offline preheating function of the upper and lower molds, and effectively improve production efficiency. The following technical solution is proposed. Utility Model Content

[0005] The technical problem solved by the utility model is to provide a mold turning and preheating device to solve the technical problem of how to realize mold turning and preheating in the prior art.

[0006] The technical solution adopted by the utility model is a mold turning and preheating device, which comprises a mold turning device and a mold preheating device; the mold turning device comprises a mold conveying mechanism and a mold turning mechanism.

[0007] Among the above technical schemes, as the preferred technical scheme of the utility model: the mold conveying mechanism includes a group of mold conveying rollers and a roller driving unit that drives the mold conveying rollers to rotate and thus convey the mold; the horizontal conveying height of the mold conveying rollers is the same as the horizontal plane height of the lower platform of the mold flipping mechanism and the upper platform after flipping.

[0008] Among the above technical schemes, as the preferred technical scheme of the utility model: the mold flipping mechanism includes a mold flipping frame, a roller bracket, a first circular stand, a second circular stand, an upper platform, a lower platform, an upper platform clamping assembly, a fixing plate, a lower platform lifting assembly, and a flipping drive assembly; the roller bracket is supported and installed at the four corners of the upper end surface of the mold flipping frame; the roller friction adapter of the roller bracket supports the rotation of the first circular stand and the second circular stand; the first circular stand and the second circular stand are vertically spaced and parallel and the centers of the two stands are provided with square openings; the concentric openings of the first circular stand and the second circular stand are provided with upper and lower parallel upper platforms and lower platforms; the two ends of the upper platform are vertically fixed to the top of the openings of the first circular stand and the second circular stand as a whole, and the upper platform A number of upper platform clamping assemblies are installed at the lower end; the upper platform clamping assemblies are used to clamp the mold; the lower end of the lower platform is fixedly connected to the lifting end of the lower platform lifting assembly; the fixed end of the lower end of the lower platform lifting assembly is vertically fixedly connected to the fixed plate; the two ends of the fixed plate are respectively vertically fixedly connected to the first circular frame and the bottom of the inner side of the second circular frame; a turning drive assembly is installed at the center of one side of the mold turning frame; the power output shaft of the turning drive assembly is coaxially fixedly installed with a driving gear; the driving gear meshes with the outer circular tooth portion of the second circular frame to drive the second circular frame to rotate synchronously with the first circular frame; the upper platform and the lower platform are respectively provided with an upper platform conveying roller group and a lower platform conveying roller group; the upper and lower platform conveying roller groups respectively drive the upper and lower platform conveying roller groups to move through their respective roller driving assemblies using chain transmission.

[0009] In the above technical scheme, as a further improvement of the utility model: it also includes a pair of guide guard plates; the inner ends of the pair of guide guard plates are straight, and the outer ends are bent outwards; the inner ends of the guide guard plates are fixedly connected to the upper and lower ends of the openings of the first circular stand and the second circular stand; the outer ends of the guide guard plates bent outwards are used to guide and transport the mold toward the mold flipping mechanism.

[0010] In the above technical scheme, as a further improvement of the utility model: it also includes a linear lifting guide assembly; the linear lifting guide assembly includes a sliding part and a sliding part guide groove; the sliding part is arranged at the end of the lower platform; the sliding part guide groove is arranged on the vertical inner wall of the opening of the first circular frame and the second circular frame; the sliding part and the sliding part guide groove are slidably adapted to provide a linear guide for the lifting of the lower platform.

[0011] Among the above technical schemes, as the preferred technical scheme of the utility model: the mold preheating device includes a mold preheating trolley, a trolley moving roller, a horizontal sliding platform, and a mold preheater; the trolley moving roller is installed at the bottom of the mold preheating trolley; a horizontal sliding groove is formed on the top of the mold preheating trolley; the sliding groove is slidably adapted to install the horizontal sliding platform, and the horizontal sliding platform is used to extend into or out of the mold preheating trolley; the mold preheater is continued to slide horizontally in the inner length direction of the horizontal sliding platform to be adapted to install the mold preheater.

[0012] In the above technical solution, as a further improvement of the utility model: a bearing is installed at one end of the horizontal sliding platform; and the sliding groove is adapted by rolling friction of the bearing.

[0013] The advantages of this utility model compared with the prior art:

[0014] 1. The utility model realizes the 180° flipping of the four-station integral forming mold for rail pressing, ensures the convenience and stability of the mold flipping process, and reduces the occurrence of mold damage caused by severe collision during the flipping process.

[0015] 2. The mold turning device provided by the utility model is used in conjunction with the mold preheating device to realize offline preheating of molds stacked up and down, solving the problem of the existing mold preheating process occupying the pressing station and effectively improving production efficiency.

[0016] 3. The mold preheating device of the utility model can flexibly adjust the relative position of the mold preheater and the mold. Through the lifting function of the lower platform, the mold preheater can be tightly fitted between the upper mold and the lower mold, forming a relatively closed mold preheating space and improving the preheating efficiency.

[0017] 4. The mold preheating device provided by the utility model has the function of slidingly adjusting the horizontal position of the mold preheater, which can effectively reduce the space occupied by the mold preheating device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a three-dimensional diagram of the mold turning and preheating device of the utility model;

[0019] Figure 2 For this utility model Figure 1 Stereoscopic diagram of the middle mold turning mechanism;

[0020] Figure 3 For this utility model Figure 1 Stereoscopic view of the middle mold turning frame;

[0021] Figure 4 For this utility model Figure 1 Three-dimensional diagram of the middle mold transport mechanism;

[0022] Figure 5For this utility model Figure 1 Stereoscopic diagram of the middle mold preheating device;

[0023] In the figure: 1-mold turning device, 1-1 mold conveying mechanism, 1-101 mold conveying roller; 1-2 mold turning mechanism, 1-201 mold turning frame, 1-202 roller bracket, 1-203 first circular stand, 1-204 second circular stand, 1-205 upper platform, 1-206 lower platform, 1-207 upper platform clamping assembly, 1-208 fixed plate, 1-209 lower platform lifting assembly, 1-210 turning drive assembly, 1-211 guide guard plate; 2-mold preheating device, 2-1 mold preheating trolley, 2-101 sliding groove, 2-2 trolley moving roller, 2-3 horizontal sliding platform, 2-4 mold preheater; 3-upper mold, 4-lower mold. DETAILED DESCRIPTION

[0024] The following will be combined with the attached embodiment of the utility model Figure 1-5 , clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] The utility model seeks to protect a mold turning and preheating device, which comprises a mold turning device 1 and a mold preheating device 2, and realizes both a turning function and a preheating function.

[0026] The mold turning device 1 includes a mold conveying mechanism 1-1 (such as Figure 4 As shown) and mold turning mechanism 1-2 (as shown Figure 2 , Figure 3 As shown in the figure, the mold can be transported in and out and turned over, and the mold can be preheated, and the mold can be transported and turned over.

[0027] In the above embodiments, as the preferred embodiments of the present utility model: (such as Figure 4 The mold transport mechanism 1-1 as shown in the figure includes a group of mold transport rollers 1-101 and a roller driving unit for driving the mold transport rollers 1-101 to rotate so as to transport the mold.

[0028] Among them, the horizontal conveying height of the mold conveying roller 1-101 is the same as the horizontal plane height of the lower platform 1-206 of the mold flipping mechanism 1-2 and the upper platform 1-205 after flipping; to ensure that the mold can be continuously and smoothly conveyed from the mold conveying mechanism 1-1 to the lower platform 1-206, or smoothly and continuously transported from the flipped upper platform 1-205 to the mold conveying mechanism 1-1.

[0029] In the above embodiments, as the preferred embodiments of the present utility model: (such as Figure 1 , Figure 2 , Figure 3 The mold flipping mechanism 1-2 as shown in the figure includes a mold flipping frame 1-201, a roller bracket 1-202, a first circular stand 1-203, a second circular stand 1-204, an upper platform 1-205, a lower platform 1-206, an upper platform clamping assembly 1-207, a fixing plate 1-208, a lower platform lifting assembly 1-209, and a flipping drive assembly 1-210.

[0030] Among them: (such as Figure 3 (As shown) the four corners of the upper end surface of the mold turning frame 1-201 are fixedly supported and installed with roller brackets 1-202; the roller friction adapter of the roller bracket 1-202 supports the rotation of the first circular stand 1-203 and the second circular stand 1-204.

[0031] The first circular stand 1-203 and the second circular stand 1-204 are arranged in parallel with each other in a vertical interval, and the centers of the two stands are provided with a square opening, which is used to transport the mold into and out of the mold turning mechanism 1-2.

[0032] An upper platform 1-205 and a lower platform 1-206 are provided in the concentric opening of the first circular stand 1-203 and the second circular stand 1-204, which are spaced apart and parallel to each other. The two ends of the upper platform 1-205 are vertically welded or fastened to the top of the opening of the first circular stand 1-203 and the second circular stand 1-204 as a whole, and a plurality of upper platform clamping assemblies 1-207 are installed at the lower end of the upper platform 1-205; the upper platform clamping assemblies 1-207 are used to clamp the mold, so that the mold is fixed on the upper platform 1-205, so that the mold does not separate from the upper platform 1-205 during the flipping process.

[0033] Among them, the upper platform clamping assembly 1-207 has at least two groups; when the upper mold 3 is lifted during the rising process of the lower platform 1-206, when the upper mold 3 abuts against the upper platform 1-205, the upper platform clamping assembly 1-207 is used to clamp the upper mold 3 to fix the upper mold 3 relative to the upper platform 1-205.

[0034] Specifically, two pairs of upper platform clamping assemblies 1-207 are arranged in parallel at both ends of the upper platform 1-205, and the two clamping clamps in each pair of upper platform clamping assemblies 1-207 are relatively arranged along the length direction of the upper platform 1-205, so that each pair of upper platform clamping assemblies 1-207 cooperate to clamp the upper mold 3.

[0035] The lower end of the lower platform 1-206 is fixedly connected to the lifting end of the lower platform lifting assembly 1-209; the lower fixed end of the lower platform lifting assembly 1-209 is vertically fixedly connected to the fixed plate 1-208.

[0036] The two ends of the fixing plate 1-208 are respectively vertically fixedly connected to the bottom of the inner side of the first circular frame 1-203 and the second circular frame 1-204. It should be noted that: the fixing plate 1-208 is horizontally arranged below the lower platform 1-206, and the two sides of the fixing plate 1-208 are vertically connected to the first circular frame 1-203 and the second circular frame 1-204 as a whole, which is conducive to cooperating with the upper platform 1-205 to keep the positions of the first circular frame 1-203 and the second circular frame 1-204 fixed to each other, thereby ensuring the structural stability of the mold turning mechanism 1-2.

[0037] When in use: the lower platform 1-206 is used to support the mold delivered from the mold turning mechanism 1-2; and the lower platform lifting assembly 1-209 is used to raise or lower the height of the lower platform 1-206, so that the mold abuts against the upper platform 1-205. Specifically: the lower ends of a pair of two lower platform lifting assemblies 1-209 are respectively vertically fixed at the center position of the fixed plate 1-208, and the upper lifting end of the lower platform lifting assembly 1-209 is fixedly connected to the center position of the side of the lower platform 1-206 to ensure the stability of the lower platform 1-206 during the lifting process.

[0038] A flipping drive assembly 1-210 is installed at the center of one side of the mold flipping frame 1-201; a driving gear is coaxially fixedly installed on the power output shaft of the flipping drive assembly 1-210; the driving gear meshes with the outer circular tooth portion of the second circular frame 1-204 to drive the second circular frame 1-204 to rotate synchronously with the first circular frame 1-203.

[0039] Specifically, the flipping drive assembly 1-210 is arranged on the outer side of the mold flipping frame 1-201 close to the second circular stand 1-204, and drives the second circular stand 1-204 to rotate synchronously with the first circular stand 1-203 through gear transmission meshing contact, so that the upper and lower platforms drive the mold to flip 180°.

[0040] The upper platform 1-205 and the lower platform 1-206 respectively have an upper platform conveying roller group and a lower platform conveying roller group; the upper and lower platform conveying roller groups respectively drive the upper and lower platform conveying roller groups through their own roller driving components using chain transmission, so that the mold can be smoothly transported into or out of the mold flipping mechanism 1-2.

[0041] In the above embodiment, as a further improvement of the utility model: it also includes a pair of guide guard plates 1-211; (such as Figure 1 , Figure 2The inner ends of the paired guide guard plates 1-211 are straight, and the outer ends are bent outwards. The inner ends of the guide guard plates 1-211 are fixedly connected to the upper and lower ends of the openings of the first circular stand 1-203 and the second circular stand 1-204; the outer ends of the guide guard plates 1-211 bent outwards are used to guide the conveying mold toward the mold turning mechanism 1-2, so as to facilitate the mold to enter the mold turning mechanism 1-2 safely and accurately.

[0042] In the above embodiment, as a further improvement of the utility model: it also includes a linear lifting guide assembly (not shown in the figure); the linear lifting guide assembly includes a sliding part and a sliding part guide groove. Among them, the sliding part is fixedly installed at the horizontal ends of the lower platform 1-206; the sliding part guide groove is fixedly installed on the vertical inner side walls of the openings of the first circular stand 1-203 and the second circular stand 1-204. When in use: the sliding part and the sliding part guide groove are slidably adapted to provide a linear guide for the lifting of the lower platform 1-206, which is conducive to ensuring the stability of the lower platform 1-206 when lifting.

[0043] In the above embodiments, as the preferred embodiments of the present utility model: (such as Figure 1 , Figure 5 The mold preheating device 2 includes a mold preheating trolley 2-1, a trolley moving roller 2-2, a horizontal sliding platform 2-3, and a mold preheater 2-4.

[0044] The mold preheating trolley 2-1 is provided with a trolley moving roller 2-2 at the bottom thereof; the trolley moving roller 2-2 enables the mold preheating trolley 2-1 to drive the mold preheater 2-4 to move conveniently between the upper mold 3 and the lower mold 4 that need to be preheated.

[0045] The top of the mold preheating trolley 2-1 is provided with a horizontal sliding groove 2-101. The sliding groove 2-101 is slidably adapted to be installed with a horizontal sliding platform 2-3, and the horizontal sliding platform 2-3 is used to drive the mold preheater 2-4 to extend into or out of the mold preheating trolley 2-1.

[0046] That is, the horizontal sliding platform 2-3 continues to slide horizontally in the inner length direction to adapt to carry and install the mold preheater 2-4.

[0047] When in use: the horizontal sliding platform 2-3 can drive the mold preheater 2-4 to slide out and slide into the mold preheating trolley 2-1, which can effectively reduce the space occupied by the mold preheating device 2; further, by adjusting the moving distance of the horizontal sliding platform 2-3, the mold preheater 2-4 can be closely fitted with the upper mold 3 and the lower mold 4 that need to be preheated.

[0048] In the above embodiment, as a further improvement of the utility model: a bearing member is installed at one end of the horizontal sliding platform 2-3; and the sliding groove 2-101 is adapted by rolling friction of the bearing member. By setting the bearing member, the friction resistance of the horizontal sliding platform 2-3 during horizontal movement is reduced.

[0049] The working principle of the utility model: (such as Figure 1 (As shown) A method for using a mold flipping and preheating device related to the utility model, the method for using includes a mold flipping method and a mold preheating method.

[0050] The steps of the mold flipping method are as follows:

[0051] Step 1. The mold is transported into the mold flipping device 1: Use an overhead crane to lift the inverted upper mold 3 or lower mold 4 to be flipped, and place the inverted upper mold 3 or lower mold 4 to be flipped on the mold conveying roller 1-101 of the mold conveying mechanism 1-1; Press the mold conveying button to allow the inverted upper mold 3 or lower mold 4 to pass through the opening of the first circular stand 1-203 and then be transported to the lower platform 1-206.

[0052] Step 2. Fix the mold: Press the lifting button to make the lower platform lifting assembly 1-209 drive the lower platform 1-206 to rise until the top of the mold on the lower platform 1-206 abuts against the lower end surface of the upper platform 1-205; then press the clamping button to make the upper platform clamping assembly 1-207 clamp the mold and lock the position of the mold and the upper platform 1-205, preparing for flipping to prevent the mold from falling or shifting.

[0053] Step 3, flip the mold: press the flip button, and the flip drive assembly 1-210 drives the mold flip mechanism 1-2 to flip the mold between the upper platform 1-205 and the lower platform 1-206 180 degrees.

[0054] Step 4, detach from the mold: press the clamping button to release the clamping of the upper platform clamping assembly 1-207 on the mold; press the lifting button to make the lower platform 1-206, which has been flipped 180° and then turned upward, rise, so that the lower platform 1-206, which has been flipped upward, detaches from the mold.

[0055] Step 5, the mold is transported out of the mold turning device 1: Press the mold conveying button to transport the turned upper mold 3 or lower mold 4 through the opening of the first circular stand 1-203 to the mold conveying mechanism 1-1. At this time, the lower platform 1-206 and the conveying of the mold conveying mechanism 1-1 operate synchronously to ensure the continuity and stability of the conveying.

[0056] Step 6: Complete the maintenance, replacement or processing of the turned upper mold 3 or lower mold 4.

[0057] The steps of the mold preheating method are as follows:

[0058] Step 1. The mold is transported into the mold turning device 1: Use an overhead crane to lift the stacked upper mold 3 and lower mold 4, and place the stacked upper mold 3 and lower mold 4 on the mold conveying roller 1-101 of the mold conveying mechanism 1-1; Press the mold conveying button to allow the stacked upper mold 3 and lower mold 4 to pass through the opening of the first circular stand 1-203 and then be transported to the lower platform 1-206.

[0059] Step 2, fix the upper mold 3: press the lifting button to make the lower platform lifting assembly 1-209 drive the lower platform 1-206 to rise until the upper mold 3 abuts against the lower end surface of the upper platform 1-205; then press the clamping button to make the upper platform clamping assembly 1-207 clamp and fix the upper mold 3, lock the position of the upper mold 3 and the upper platform 1-205, and at the same time make the upper mold 3 and the lower mold 4 be located between the upper and lower platforms.

[0060] Step 3, separation of the upper and lower molds: Press the lifting button to make the lower platform lifting assembly 1-209 drive the lower platform 1-206 to descend to the initial position, so that the upper mold 3 and the lower mold 4 are separated.

[0061] Step 4: Place the mold preheater 2-4: Push the mold preheating trolley 2-1 close to the side of the mold turning device 1 (such as Figure 1 Manually operate the horizontal sliding platform 2-3 to slide out of the mold preheating trolley 2-1 to the left; adjust the sliding distance of the mold preheater 2-4 so that the mold preheater 2-4 accurately enters the space between the upper mold 3 and the lower mold 4, thereby preparing for synchronous heating of the upper and lower molds.

[0062] Step 5, turn on the mold preheater 2-4: press the preheating button to start the electric heating tube of the mold preheater 2-4 to preheat the upper mold 3 and the lower mold 4 at the same time.

[0063] Step 6, complete mold preheating: after the upper mold 3 and the lower mold 4 reach the preheating temperature, turn off the electric heating tube of the mold preheater 2-4 and manually push the mold preheating trolley 2-1 away from the mold turning device 1.

[0064] Step 7, detach from the mold: press the lifting button to make the lower platform lifting assembly 1-209 drive the lower platform 1-206 to rise until the lower mold 4 abuts against the lower end surface of the upper mold 3; press the clamping button to make the upper platform clamping assembly 1-207 release the clamping of the upper mold 3. At this time, the upper and lower molds are supported by the lower platform 1-206.

[0065] Step 8. Move the mold out of the mold flipping mechanism 1-2: Press the lifting button to make the lower platform lifting assembly 1-209 drive the lower platform 1-206 to descend to the initial position and be at the same height as the mold conveying mechanism 1-1; press the mold conveying button to allow the stacked upper mold 3 and lower mold 4 to be transported to the mold conveying mechanism 1-1 through the opening of the first circular stand 1-203.

[0066] From the above description, it can be found that: the utility model realizes the 180° flipping of the four-station integral forming mold for rail pressing, ensures the convenience and stability of the mold flipping process, and reduces the occurrence of mold damage problems caused by severe collisions during the flipping process.

[0067] The mold turning device 1 provided by the utility model is used in conjunction with the mold preheating device 2 to realize offline preheating of molds stacked up and down, solves the problem of the existing mold preheating process occupying the pressing station, and effectively improves production efficiency.

[0068] The mold preheating device 2 of the utility model can flexibly adjust the relative position of the mold preheater 2-4 and the mold. Through the lifting function of the lower platform 1-206, the mold preheater 2-4 can be tightly fitted between the upper mold 3 and the lower mold 4, forming a relatively closed mold preheating space and improving the preheating efficiency.

[0069] The mold preheating device 2 provided by the utility model has the function of slidingly adjusting the horizontal position of the mold preheaters 2-4, which can effectively reduce the occupied space of the mold preheating device.

[0070] In summary, the utility model has a relatively simple structure, and has the flipping and preheating functions in one. While achieving stable flipping, the upper and lower molds can be preheated synchronously, and the space occupied by the preheating device can be effectively saved, so it is suitable for promotion.

[0071] Each embodiment in this specification is described in a related manner, and the same or similar parts between the embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0072] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.

Claims

1. A mold turning and preheating device, characterized in that: It comprises a mold turning device (1) and a mold preheating device (2); the mold turning device (1) comprises a mold conveying mechanism (1-1) and a mold turning mechanism (1-2); The mold conveying mechanism (1-1) comprises a group of mold conveying rollers (1-101) and a roller driving unit for driving the mold conveying rollers (1-101) to rotate so as to convey the mold; the horizontal conveying height of the mold conveying rollers (1-101) is the same as the horizontal plane height of the lower platform (1-206) of the mold turning mechanism (1-2) and the turned upper platform (1-205); The mold turning mechanism (1-2) comprises a mold turning frame (1-201), a roller bracket (1-202), a first circular stand (1-203), a second circular stand (1-204), an upper platform (1-205), a lower platform (1-206), an upper platform clamping assembly (1-207), a fixing plate (1-208), a lower platform lifting assembly (1-209), and a turning drive assembly (1-210); the roller bracket (1-202) is supported and installed at the four corners of the upper end surface of the mold turning frame (1-201); the roller friction adapter of the roller bracket (1-202) The first circular stand (1-203) and the second circular stand (1-204) are supported to rotate; the first circular stand (1-203) and the second circular stand (1-204) are arranged in parallel with each other at a vertical interval, and the centers of the two stands are both provided with a square opening; the openings of the first circular stand (1-203) and the second circular stand (1-204) are concentric with each other and are provided with an upper platform (1-205) and a lower platform (1-206) which are arranged in parallel with each other at an upper interval; the two ends of the upper platform (1-205) are perpendicular to the top ends of the openings of the first circular stand (1-203) and the second circular stand (1-204); The upper platform (1-205) is fixedly connected as one body, and a plurality of upper platform clamping assemblies (1-207) are installed at the lower end of the upper platform (1-205); the upper platform clamping assemblies (1-207) are used to clamp the mold; the lower end of the lower platform (1-206) is fixedly connected to the lifting end of the lower platform lifting assembly (1-209); the lower fixed end of the lower platform lifting assembly (1-209) is vertically fixedly connected to the fixed plate (1-208); the two ends of the fixed plate (1-208) are respectively vertically fixedly connected to the inner bottom of the frame body of the first circular stand (1-203) and the second circular stand (1-204); the mold turning frame (1-201) A flip drive assembly (1-210) is installed at the center of one side; a driving gear is coaxially fixedly installed on the power output shaft of the flip drive assembly (1-210); the driving gear meshes with the outer circular tooth portion of the second circular stand (1-204) to drive the second circular stand (1-204) to rotate synchronously with the first circular stand (1-203); the upper platform (1-205) and the lower platform (1-206) are respectively provided with an upper platform conveying roller group and a lower platform conveying roller group; the upper and lower platform conveying roller groups respectively drive the upper and lower platform conveying roller groups to move through their respective roller drive assemblies using chain transmission; The mold preheating device (2) comprises a mold preheating trolley (2-1), a trolley moving roller (2-2), a horizontal sliding platform (2-3), and a mold preheater (2-4); the trolley moving roller (2-2) is installed at the bottom of the mold preheating trolley (2-1); a horizontal sliding groove (2-101) is formed at the top of the mold preheating trolley (2-1); the sliding groove (2-101) is slidably adapted to install the horizontal sliding platform (2-3), and the horizontal sliding platform (2-3) is used to extend into or out of the mold preheating trolley (2-1); the mold preheater (2-4) is installed by continuing to slide horizontally in the inner length direction of the horizontal sliding platform (2-3).

2. The device according to claim 1, characterized in that: It also includes a pair of guide guard plates (1-211); the inner ends of the pair of guide guard plates (1-211) are straight and the outer ends are bent outward; the inner ends of the guide guard plates (1-211) are fixedly connected to the upper and lower ends of the openings of the first circular stand (1-203) and the second circular stand (1-204); the outer ends of the guide guard plates (1-211) bent outward are used to guide the conveying mold toward the mold turning mechanism (1-2).

3. The device according to claim 1, characterized in that: It also includes a linear lifting guide assembly; the linear lifting guide assembly includes a sliding part and a sliding part guide groove; the sliding part is arranged at the end of the lower platform (1-206); the sliding part guide groove is arranged on the vertical inner side wall of the opening of the first circular stand (1-203) and the second circular stand (1-204); the sliding part and the sliding part guide groove are slidably adapted to provide linear guidance for the lifting of the lower platform (1-206).

4. The device according to claim 1, characterized in that: A bearing member is installed at one end of the horizontal sliding platform (2-3); the horizontal sliding platform (2-3) is adapted to the sliding groove (2-101) through rolling friction of the bearing member.

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