A middle mold synchronous rotation mechanism

Abstract

The invention discloses a middle die synchronous rotation mechanism, comprising: a middle die plate; a plurality of upper guide columns, wherein the lower ends of the upper guide columns are arranged at intervals around the middle die plate; an upper die plate, wherein the upper die plate is located above the middle die plate and is connected to the upper ends of the upper guide columns; an upper punching unit, wherein the upper punching unit is installed below the upper die plate; and a rotating middle die unit, wherein the rotating middle die unit is installed inside the middle die plate, and the center line of the rotating middle die unit coincides with the center line of the upper punching unit. The invention solves the technical problem of asynchronous shaping of helical gears.

Description

Technical Field

[0001] The invention relates to the technical field of powder molding equipment, and in particular to a middle mold synchronous rotating mechanism. Background Art

[0002] The production process of metal powder metallurgy parts is generally divided into three parts: powder pressing, sintering, and shaping. After sintering, the parts will produce slight deformation. In order to meet the precision requirements of the parts, a shaping process is generally required. The geometric accuracy and surface accuracy of the parts meet the design requirements through die extrusion. The power of die extrusion is provided by the shaping equipment, which is generally in a linear direction, so it is easier to shape straight-through parts, but it is difficult to shape helical gear-shaped parts. Summary of the invention

[0003] The purpose of the present invention is to provide a middle die synchronous rotation mechanism to solve the technical problem of asynchronous shaping of helical gears in the prior art.

[0004] The embodiment of the present application discloses a middle mold synchronous rotation mechanism, comprising:

[0005] Medium template;

[0006] A plurality of upper guide columns, the lower ends of which are arranged at intervals around the middle template;

[0007] An upper template, the upper template is located above the middle template, and the upper template is connected to the upper end of the upper guide column;

[0008] An upper punching unit, the upper punching unit being installed below the upper template;

[0009] A rotating middle die unit is installed above the middle die plate, and a center line of the rotating middle die unit coincides with a center line of the upper punching unit.

[0010] In the embodiment of the present application, the upper stamping unit and the rotating middle die unit cooperate with each other to complete the stamping process of the gear, which can improve the processing efficiency and accuracy.

[0011] On the basis of the above technical solution, the present invention can also be improved as follows:

[0012] Furthermore, the upper punching unit comprises:

[0013] An upper rotating member, which is installed below the upper template and has a gear assembly cavity;

[0014] A gear set, the gear set is installed inside the gear assembly cavity, and the gear set is meshed with the upper rotating member;

[0015] The upper punch die is installed on the top of the upper rotating member. The beneficial effect of adopting this step is that the rotating member facilitates the stability of the upper punch processing.

[0016] Furthermore, a rotating column is provided in the middle of the gear assembly cavity;

[0017] The gear set includes at least two transmission gears and one driven gear, the transmission gears are respectively located on both sides of the driven gear, and the transmission gear is meshed with the driven gear, a transmission shaft is installed in the middle of the transmission gear, and the middle of the driven gear is meshed and installed on the rotating column;

[0018] The bottom end of the transmission shaft and the bottom end of the upper punch die are in the same horizontal plane.

[0019] Furthermore, the upper punching unit further comprises:

[0020] An upper punch floating plate, the upper side of which is connected to the lower side of the upper template, and the lower side of which is connected to the upper side of the upper rotating member;

[0021] The upper punch cover is connected to the upper rotating member, and the upper punch cover fixes the upper punch die below the upper rotating member. The beneficial effect of adopting this step is that the upper punch floating plate plays a buffering role.

[0022] Furthermore, the rotating middle mold unit comprises:

[0023] A mold sleeve, the mold sleeve is installed in the middle of the middle mold plate;

[0024] A roller bearing, wherein the roller bearing is installed in the middle of the mold sleeve;

[0025] A middle die, the middle die is installed above the roller bearing and is installed in the middle of the die sleeve;

[0026] The lower punch die is located in the middle of the middle die. The beneficial effect of this step is to facilitate the rotation and downward movement of the die sleeve, the middle die and other components through the roller bearing.

[0027] Furthermore, the rotating middle mold unit also includes:

[0028] A middle die floating piston, wherein the middle die floating piston is installed in the middle of the middle die plate, and the die sleeve is installed inside the middle die floating piston;

[0029] A table panel, the table panel is installed above the floating piston of the middle mold;

[0030] A middle mold cover is installed in the middle of the table panel.

[0031] Furthermore, it also includes a pushing unit, which pushes the rotating middle mold unit to move up and down.

[0032] Furthermore, the pushing unit comprises:

[0033] A fixed plate, the fixed plate is located below the middle template;

[0034] A plurality of support columns, wherein the support columns are installed at intervals around the fixing plate, and the upper ends of the support columns are connected to the middle template;

[0035] A stripping plate, the stripping plate being located below the fixing plate;

[0036] A plurality of lower guide columns, wherein the lower guide columns are installed at intervals around the stripping plate, and the upper ends of the lower guide columns pass through the fixing plate;

[0037] A push support plate, wherein the push support plate is mounted on the upper end of the lower guide column;

[0038] A mandrel oil cylinder, wherein the mandrel oil cylinder is mounted on the fixed plate, and a piston rod of the mandrel oil cylinder passes through the push support plate to the interior of the lower punch die;

[0039] A pushing component is sleeved on the piston rod of the core rod oil cylinder, and the pushing component pushes the rotating middle mold unit to move up and down, and the pushing component is connected to the pushing support plate.

[0040] Furthermore, the pushing component comprises:

[0041] A lower punch cover, wherein the lower punch cover mounts the lower punch die on the push support plate;

[0042] Push cylinders, which are installed at intervals on both sides of the lower punch cover;

[0043] A middle die rotating sleeve, wherein the middle die rotating sleeve is mounted on the piston rod of the mandrel oil cylinder, and the middle die is mounted on the output end of the middle die rotating sleeve;

[0044] A rotating plate, the bottom side of which is connected to the output end of the pushing cylinder, and the rotating plate is mounted on the middle mold rotating sleeve;

[0045] Limiting posts are installed on the rotating plate at intervals.

[0046] Furthermore, two displacement sensors are installed on the limit column.

[0047] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0048] 1. The embodiment of the present application designs an upper punch unit and a rotating middle die unit. The upper punch die in the upper punch unit can be rotated downward; while the lower punch die in the rotating middle die unit is stable and does not move, and a platform cooperating with the lower punch die moves up and down, thereby achieving stable processing.

[0049] 2. The embodiment of the present application is also provided with a displacement sensor, so as to detect the downward movement distance of the upper mold, thereby protecting the processing part of the embodiment of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0051] Figure 1 It is a structural schematic diagram of a middle mold synchronous rotation mechanism described in specific embodiment 1 of the present invention;

[0052] Figure 2 It is a structural schematic diagram of an upper punching unit of a middle die synchronous rotating mechanism according to a specific embodiment 1 of the present invention;

[0053] Figure 3 It is a front view of an upper punching unit of a middle die synchronous rotating mechanism according to a specific embodiment 1 of the present invention;

[0054] Figure 4 It is a cross-sectional view taken along the AA direction of an upper punching unit of a middle die synchronous rotating mechanism according to a specific embodiment 1 of the present invention;

[0055] Figure 5 It is a front view of a rotating middle mold unit of a middle mold synchronous rotating mechanism described in specific embodiment 1 of the present invention;

[0056] Figure 6 It is a BB-direction cross-sectional view of a rotating middle mold unit of a middle mold synchronous rotating mechanism described in specific embodiment 1 of the present invention;

[0057] Reference numerals:

[0058] 1-middle mold plate; 2-upper guide column; 3-upper mold plate; 4-upper punching unit; 5-rotating middle mold unit; 6-pushing unit;

[0059] 401-upper rotating member; 402-gear assembly cavity; 403-gear set; 404-upper punch die; 405-rotating column; 406-transmission gear; 407-driven gear; 408-transmission shaft; 409-upper punch floating plate; 410-upper punch cover;

[0060] 501-die sleeve; 502-roller bearing; 503-middle die; 504-lower punch die; 505-middle die floating piston; 506-table plate; 507-middle die cover;

[0061] 601-fixed plate; 602-support column; 603-stripping plate; 604-lower guide column; 605-pushing support plate; 606-core rod cylinder; 607-pushing assembly;

[0062] 608-lower punch cover; 609-pushing cylinder; 610-middle die rotating sleeve; 611-rotating plate; 612-limiting column; 613-displacement sensor. DETAILED DESCRIPTION

[0063] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

[0064] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by those skilled in the art to which the present invention belongs.

[0065] In the description of the present application, it should be understood that the terms "center", "up", "down", "top", "bottom", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0066] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0067] A middle mold synchronous rotation mechanism provided in an embodiment of the present application solves the technical problem of inconvenient processing of helical gears in the prior art.

[0068] The overall idea of ​​the embodiment of the present application is as follows: the processing of the helical gear is completed by the cooperation between the upper punch unit and the rotating middle die unit; after the processing is completed, the helical gear is pushed by the pushing assembly to demold the helical gear and complete the processing process. The embodiment of the present application is specially provided with a synchronous rotating middle die on the mold frame to ensure that while the product is linearly pressed into the middle die, the middle die synchronously follows the rotation, so that the helical gear-shaped parts can smoothly enter the middle die for shaping. After the shaping is completed, the rotating middle die rotates in the opposite direction under the push of external force and smoothly ejects the product. This synchronization mechanism has a simple structure and can make the rotating middle die synchronously follow the rotation of the product in both positive and negative directions, thereby improving production efficiency and product precision.

[0069] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0070] Embodiment 1:

[0071] like Figure 1-6 As shown, this embodiment provides a middle mold synchronous rotation mechanism, including:

[0072] Middle template 1, wherein the middle template 1 is used to complete the support and assemble other parts;

[0073] A plurality of upper guide posts 2, the lower ends of which are arranged at intervals around the middle template 1, the preferred number of upper guide posts 2 is 4, or two, which mainly play a guiding role, and the upper guide posts 2 are arranged in the middle template 1, so as to limit the movement trajectory of the upper guide posts 2;

[0074] An upper template 3, the upper template 3 is located above the middle template 1, and the upper template 3 is connected to the upper end of the upper guide column 2. The upper template 3 in the embodiment of the present application is also used to complete the support and to assemble other components. At the same time, the upper template 3 is connected to the upper guide column 2, so that when the upper template 3 is connected to the driving component, the upper template 3 can move up and down;

[0075] An upper punching unit 4, wherein the upper punching unit 4 is installed below the upper template 3. The upper punching unit 4 in the embodiment of the present application is used to complete the inner wall processing of the helical gear, wherein the punching tool segment of the upper punching unit 4 can complete the spiral processing of the gear during the downward movement;

[0076] The rotating middle die unit 5 is installed above the middle die plate 1, and the center line of the rotating middle die unit 5 coincides with the center line of the upper punch unit 4. The rotating middle die unit 5 in the embodiment of the present application corresponds to the upper punch unit 4 to complete the spiral processing of the gear.

[0077] Specifically, the upper punching unit 4 includes:

[0078] An upper rotating member 401, which is installed below the upper template 3 and has a gear assembly cavity 402, and the upper rotating member 401 is convenient for other components to rotate. When the upper template 3 and the upper punching unit 4 move downward and the gear is processed, the tool needs to perform a certain rotational motion due to the characteristics of the spiral, which requires the cooperation of the upper rotating member 401;

[0079] The gear set 403 is installed in the gear assembly cavity 402, and the gear set 403 is meshed with the upper rotating member 401. After the gear set 403 of the embodiment of the present application is meshed with the upper rotating member 401, when the upper rotating member 401 rotates, the gear set 403 also starts to move, and the meshing rotation of the gear set 403 can ensure the stability during the spiral processing;

[0080] The upper punch die 404 is installed on the top of the upper rotating member 401. The outer wall of the upper punch die 404 is provided with a spiral processing protrusion. When the upper punch die moves downward, the gear processing can be completed.

[0081] The specific assembly method of the gear set 403 and the gear assembly chamber 402 is as follows, wherein a rotating column 405 is provided in the middle of the gear assembly chamber 402, and the outer edge of the rotating column 405 is a tooth surface; the gear set 403 includes at least two transmission gears 406 and a driven gear 407, the transmission gears 406 are respectively located on both sides of the driven gear 407, and the transmission gears 406 are meshed with the driven gear 407, and a transmission shaft 408 is installed in the middle of the transmission gear 406. The middle part of the driven gear 407 is meshed and installed on the rotating column 405. The gear set 403 is at least three gears, wherein the center hole of the driven gear 407 located in the middle is sleeved on the rotating column 405, and the driven gear 407 is meshed with the rotating column 405, and the rotating column 405 is fixedly connected to the upper rotating member 401. When the upper punch die 404 moves downward, the upper punch die 404 will rotate to a certain extent, thereby driving the upper rotating member 401 to rotate to a certain extent, so that the rotating column 405 can also complete the rotation;

[0082] The bottom end of the transmission shaft 408 is in the same horizontal plane as the bottom end of the upper punch die 404. The transmission shaft 408 is connected to the middle part of the transmission gear 406 to facilitate the rotation of the transmission gear 406. At the same time, the bottom of the transmission shaft 408 corresponds to the bottom of the upper punch die 404, which can also protect the upper punch die 404 and prevent damage. In order to improve the efficiency of gear processing by the upper punch die 404, the embodiment of the present application can also add a power drive mechanism to actively drive the gear set 403 to move, complete the active rotation of the upper punch die 404, and make it adapt to the spiral texture.

[0083] Specifically, Figure 2-4 As shown, the upper punching unit 4 also includes:

[0084] An upper punch floating plate 409, wherein the upper side of the upper punch floating plate 409 is connected to the lower side of the upper mold plate, and the lower side of the upper punch floating plate 409 is connected to the upper side of the upper rotating member 401;

[0085] The upper punch cover 410 is connected to the upper rotating member 401, and the upper punch cover 410 fixes the upper punch die 404 under the upper rotating member 401; the upper punch cover 410 in the embodiment of the present application is used to assemble the upper punch die 404, and the upper punch floating plate 409 provides telescopic capacity to reduce the impact generated by the upper punch die 404.

[0086] Specifically, Figure 5-6 As shown, the rotating middle mold unit 5 includes:

[0087] A mold sleeve 501, which is installed in the middle of the middle mold plate 1. The mold sleeve 501 is composed of two upper and lower half mold sleeves 501, which is convenient for installing the middle mold;

[0088] A roller bearing 502, wherein the roller bearing 502 is installed in the middle of the mold sleeve 501;

[0089] A middle mold 503, wherein the middle mold 503 is installed inside the mold sleeve 501, and the bottom of the middle mold 503 is connected to the roller bearing 502;

[0090] The lower punch mold 504 is arranged in the middle of the middle mold 503; the mold sleeve 501 in the embodiment of the present application is used to install the middle mold 503, and the lower punch mold 504 is arranged inside the middle mold 503, and the outer edge spiral texture of the lower punch mold 504 corresponds to the outer edge spiral texture of the upper punch mold 404, and the roller bearing 502 is convenient for the rotation of the mold sleeve 501, that is, the lower punch mold 504 rotates. During processing, the workpiece to be processed is arranged on the middle mold 503, and the lower punch mold 504 corresponds to the workpiece to be processed, and the upper punch mold 404 and the lower punch mold 504 cooperate to complete the spiral processing; the middle mold 503 in the embodiment of the present application can move up and down along the lower punch mold 504.

[0091] Specifically, the rotating middle mold unit 5 also includes:

[0092] A middle die floating piston 505, wherein the middle die floating piston 505 is installed in the middle of the middle die plate 1, and the die sleeve 501 is installed inside the middle die floating piston 505. The middle die floating piston 505 also plays a buffering role to reduce the impact of the lower punch die 504;

[0093] A table panel 506, wherein the table panel 506 is installed above the middle mold floating piston 505;

[0094] The middle mold pressure cover 507 is installed in the middle of the table panel 506. The middle mold pressure cover 507 and the table panel 506 in the embodiment of the present application are used to limit the middle mold 503 and ensure the stability of the assembly of the middle mold 503.

[0095] Among them, the embodiment of the present application also includes a pushing unit 6, and the pushing unit 6 pushes the rotating middle mold unit 5 to move up and down, so that the rotating middle mold unit 5 can be moved up and down, and the rotating middle mold unit 5 can also be demolded after stable processing.

[0096] Specifically, the pushing unit 6 includes:

[0097] A fixing plate 601, wherein the fixing plate 601 is located below the middle template 1;

[0098] A plurality of support columns 602; the support columns 602 are installed at intervals around the fixing plate 601, and the upper ends of the support columns 602 are connected to the middle template 1;

[0099] A stripping plate 603, wherein the stripping plate 603 is located below the fixing plate 601;

[0100] A plurality of lower guide posts 604, wherein the lower guide posts 604 are installed at intervals around the stripping plate 603, and the upper ends of the lower guide posts 604 pass through the fixed plate 601; in the embodiment of the present application, the fixed plate 601, the support posts 602, the stripping plate 603 and the lower guide posts 604 form an external frame of the stamping assembly for subsequent assembly of the stamping assembly;

[0101] A push support plate 605, wherein the push support plate 605 is mounted on the upper end of the lower guide column 604. In the embodiment of the present application, the push support plate 605 is used to assemble other components to achieve stable support for the rotating middle mold unit 5;

[0102] A mandrel cylinder 606, wherein the mandrel cylinder 606 is mounted on the fixed plate 601, and a piston of the mandrel cylinder 606 passes through the push support plate 605 to the interior of the lower punch die 504;

[0103] The pushing component 607 is sleeved on the piston rod of the core rod cylinder 606 , and the pushing component 607 pushes the rotating middle mold unit 5 to move up and down. The pushing component 607 is connected to the pushing support plate 605 .

[0104] Specifically, the pushing assembly 607 includes:

[0105] A lower punch cover 608, wherein the lower punch cover 608 is installed on the push support plate 605, and the lower punch cover 608 fixes the lower punch die 504 on the push support plate 605;

[0106] A pushing cylinder 609, which is installed at intervals on both sides of the pushing support plate 605. In the embodiment of the present application, there are two pushing cylinders 609, and the pushing cylinders 609 are arranged at intervals to push the cylinder components to move;

[0107] A middle die rotating sleeve 610, wherein the middle die rotating sleeve 610 is sleeved on the lower punch die;

[0108] A rotating plate 611, the bottom side of which is connected to the output end of the push cylinder 609, and the rotating plate 611 is sleeved on the middle mold rotating sleeve 610;

[0109] The limiting posts 612 are installed at intervals on the rotating plate 611, and the limiting posts 612 pass through the die sleeve 501; the outer edge surface of the middle die rotating sleeve 610 in the embodiment of the present application is a tooth surface in the vertical direction, corresponding to the middle part of the rotating plate 611, so that when the rotating plate 611 moves up and down, it can drive the middle die rotating sleeve 610 to move up and down, and the upper end of the middle die rotating sleeve 610 is connected to the roller bearing 502, so that it can drive the roller bearing 502 to move up and down, and the roller bearing 502 is connected to other components such as the table panel and the middle die, so that these components move up and down, and the position of the lower punch die 504 is fixed, so that the upper end of the lower punch die 504 can be exposed to complete the processing of the workpiece.

[0110] Among them, two displacement sensors 613 are installed on the limiting column 612, and the displacement sensors 613 can detect the position and the moving position of the upper template 3 to protect other components.

[0111] In the description of the present invention, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.

[0112] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0113] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A middle mold synchronous rotation mechanism, characterized in that: include: Medium template; A plurality of upper guide columns, the lower ends of which are arranged at intervals around the middle template; An upper template, the upper template is located above the middle template, and the upper template is connected to the upper end of the upper guide column; An upper punching unit, the upper punching unit is installed below the upper template; the punching tool segment of the upper punching unit can complete the spiral processing of the gear during the downward movement; A rotating middle die unit, wherein the rotating middle die unit is installed inside the middle die plate, and a center line of the rotating middle die unit coincides with a center line of the upper punch unit; The rotating middle mold unit comprises: A mold sleeve, the mold sleeve is installed in the middle of the middle mold plate; A roller bearing, wherein the roller bearing is installed in the middle of the mold sleeve; A middle die, the middle die is installed above the roller bearing and is installed in the middle of the die sleeve; A lower punch die, wherein the lower punch die is located in the middle of the middle die; the position of the lower punch die is fixed; and the middle die can move up and down along the lower punch die; A middle die floating piston, wherein the middle die floating piston is installed in the middle of the middle die plate, and the die sleeve is installed inside the middle die floating piston; A table panel, the table panel is installed above the floating piston of the middle mold; A middle mold cover is installed in the middle of the table panel.

2. A middle mold synchronous rotation mechanism according to claim 1, characterized in that: The upper punching unit comprises: An upper rotating member, which is installed below the upper template and has a gear assembly cavity; A gear set, the gear set is installed inside the gear assembly cavity, and the gear set is meshed with the upper rotating member; An upper punch die is mounted on the top of the upper rotating member.

3. A middle mold synchronous rotation mechanism according to claim 2, characterized in that: A rotating column is arranged in the middle of the gear assembly cavity; The gear set includes at least two transmission gears and one driven gear, the transmission gears are respectively located on both sides of the driven gear, and the transmission gear is meshed with the driven gear, a transmission shaft is installed in the middle of the transmission gear, and the middle of the driven gear is meshed and installed on the rotating column; The bottom end of the transmission shaft and the bottom end of the upper punch die are in the same horizontal plane.

4. A middle mold synchronous rotation mechanism according to claim 3, characterized in that: The upper punching unit also includes: An upper punch floating plate, the upper side of which is connected to the lower side of the upper template, and the lower side of which is connected to the upper side of the upper rotating member; An upper punch cover is connected to the upper rotating member, and the upper punch cover fixes the upper punch die below the upper rotating member.

5. A middle mold synchronous rotation mechanism according to claim 4, characterized in that: It also includes a pushing unit, which pushes the rotating middle mold unit to move up and down.

6. A middle mold synchronous rotation mechanism according to claim 5, characterized in that: The pushing unit comprises: A fixed plate, the fixed plate is located below the middle template; A plurality of support columns, wherein the support columns are installed at intervals around the fixing plate, and the upper ends of the support columns are connected to the middle template; A stripping plate, the stripping plate being located below the fixing plate; A plurality of lower guide columns, wherein the lower guide columns are installed at intervals around the stripping plate, and the upper ends of the lower guide columns pass through the fixing plate; A push support plate, wherein the push support plate is mounted on the upper end of the lower guide column; A mandrel oil cylinder, wherein the mandrel oil cylinder is mounted on the fixed plate, and a piston rod of the mandrel oil cylinder passes through the push support plate to the interior of the lower punch die; A pushing component is sleeved on the piston rod of the core rod oil cylinder, and the pushing component pushes the rotating middle mold unit to move up and down, and the pushing component is connected to the pushing support plate.

7. A middle mold synchronous rotation mechanism according to claim 6, characterized in that: The pushing component comprises: A lower punch cover, wherein the lower punch cover mounts the lower punch die on the push support plate; Push cylinders, which are installed at intervals on both sides of the lower punch cover; A middle die rotating sleeve, wherein the middle die rotating sleeve is mounted on the piston rod of the mandrel oil cylinder, and the middle die is mounted on the output end of the middle die rotating sleeve; A rotating plate, the bottom side of which is connected to the output end of the pushing cylinder, and the rotating plate is mounted on the middle mold rotating sleeve; Limiting posts are installed on the rotating plate at intervals.

8. A middle mold synchronous rotation mechanism according to claim 7, characterized in that: Two displacement sensors are installed on the limit column.

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