A production device and method for sealing packing ring
By using external heating modules and internal heating modules to heat up the melted material during the production process of sealing filler rings, and using the internal and external pressing rings and blocking components of the mold to control gas discharge, the problems of the intermediate gap and bubble cavity of the sealing filler ring are solved, and the problem of sealing filler rings is realized. The homogeneity and flatness of the finished product are improved and the production quality is improved.
Patent Information
- Application Number
- CN202411102603.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-13
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2044-08-13
AI Technical Summary
During the production process of sealing filler rings, gaps and bubble cavity are prone to exist during the pressing process of raw materials, which affects the homogeneity and surface flatness of the finished product, resulting in additional corrections and additional processes.
Using a production device including a lower mold, an upper mold, a top plate and a push rod motor, the heating and melting of materials is achieved through the external heating module and the internal heating module, and the internal pressing ring and the external pressing ring are used to cooperate with the blocking component to control the gas discharge. Ensure the sealing and flat pressing of the forming space.
Effectively reduce the generation of voids, ensure the internal homogeneity and surface flatness of the finished product, reduce the need for finished product correction, and improve production quality and efficiency.
Smart Images
Figure CN118636369B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of sealing packing rings, and in particular to a production device and method for sealing packing rings. Background Art
[0002] The sealing packing ring is an important component used to seal pipes, valves and other equipment. It has the characteristics of strong adaptability, good sealing, excellent physical and chemical properties, and can cope with a variety of complex working environments. It is widely used in pipes, valves, pumps and other equipment. It is a key component to ensure the safe operation of equipment and prevent leakage.
[0003] In the production process, compression molding, hot pressing and other methods are mostly used to achieve rapid molding of products. However, in the actual operation process, since the raw materials are mostly masterbatch raw materials and old sealing packing ring powder particles, etc., during the actual product processing, on the one hand, gaps are prone to exist, resulting in bubble cavities inside the subsequent pressed products, affecting the homogeneity of the finished products and affecting their actual performance. On the other hand, during the pressing process, the surface of the finished product is prone to be uneven due to gaps and cracks in the fragments, which requires additional corrections and increases the number of processes. For this reason, we propose a production device and method for sealing packing rings. Summary of the invention
[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a production device and method for a sealing packing ring.
[0005] In order to achieve the above object, the present invention adopts the following technical solutions:
[0006] A production device for a sealing packing ring, comprising:
[0007] The lower mold comprises an outer mold cavity, the top of which is open, and a center pile is fixedly installed at the center of the inner cavity. The annular space enclosed by the outer mold cavity and the center pile is used to provide a molding space for hot pressing of the filler ring. An annular step is provided on the upper outer side of the center pile, and a feed channel obliquely penetrating to the top of the center pile is provided on the step.
[0008] The upper mold is inserted into the upper inner part of the lower mold, and includes an inner compression ring and an outer compression ring that cooperate with the outer cavity of the upper mold of the lower mold and the enclosed area of the center pile. The outer compression ring is evenly provided with a plurality of exhaust holes, and the upper outer part of the inner compression ring is provided with a plugging component corresponding to the exhaust holes. The lower inner part of the inner compression ring is provided with a groove corresponding to the annular step on the center pile, and a feed plugging member for controlling the opening and closing of the feed channel on the center pile is installed at the groove to control the introduction of the masterbatch material produced by the sealing packing ring;
[0009] The top plate is installed above the lower mold, and is connected to the lower mold by several sets of support frames to achieve stable installation of the top plate;
[0010] The push rod motor is fixedly installed at the center of the bottom end of the lower mold, and the output shaft of the push rod motor is vertically downward, and is fixedly connected to the top of the upper mold by several groups of connecting rods, which are used to realize the lifting and lowering of the upper mold, thereby realizing the stability of the subsequent hot pressing process.
[0011] As a preferred technical solution of the present application, an external heating module is arranged around the lower outer part of the lower mold, and a cavity is arranged inside the center pile, and an internal heating module is arranged in the cavity. By means of the arrangement of the external heating module and the internal heating module, the masterbatch material entering the outer cavity of the mold and the center pile is effectively heated and melted, thereby preliminarily reducing the generation of voids, providing temperature guarantee for the subsequent production of filler rings, and providing initial conditions.
[0012] As a preferred technical solution of the present application, a material guide cone is provided at the top of the center pile on the inner side of the enclosed area of the feed channel, and a sealing ring is installed on the outer side of the enclosed area of the feed channel. The cooperation of the sealing ring and the material guide cone effectively ensures the stable introduction of the masterbatch material to avoid spillage.
[0013] As a preferred technical solution of the present application, the bottom end of the outer pressure ring is flush with the bottom end of the inner pressure ring, and the covering area of the inner pressure ring and the outer pressure ring is consistent with the molding space between the outer cavity of the mold and the center pile, ensuring the effective sealing of the lower space during the hot pressing process and ensuring the hot pressing effect.
[0014] The cam is provided with a plurality of guide blocks, which are provided on the outer side of the plurality of guide blocks, and a plurality of guide blocks are provided on the outer side of the plurality of guide blocks, and a plurality of guide blocks are provided on the outer side of the plurality of guide blocks.
[0015] As a preferred technical solution of the present application, the top of the adjusting screw is coaxially connected with an adjusting gear, and the top of the inner compression ring is provided with an annular groove, and a linkage ring is rotatably arranged in the annular groove, an outer gear ring is provided on the outer side of the linkage ring, and the outer gear ring is meshed with the adjusting gear, an inner gear ring is provided on the inner side of the linkage ring, and a driving motor is fixedly installed on the top of the inner compression ring, and the top of the output shaft of the driving motor is coaxially connected with a driving gear, and the driving gear is meshed with the inner gear ring on the linkage ring, and then under the action of the driving gear, the linkage ring is effectively driven to rotate, and then the adjusting gears on each group of blocking components are driven to rotate synchronously, thereby realizing stable vertical adjustment of the blocking screws on each group of blocking components, and realizing effective blocking treatment of the outer compression ring below.
[0016] As a preferred technical solution of the present application, the feed plugging member includes a telescopic spring connected below the inner groove, the bottom end of the telescopic spring is bonded with a plugging ring plate that fits with the step on the center pile, and the inner side of the telescopic spring is penetrated by an insertion rod that is fixedly connected to the inner wall of the top of the inner pressure ring at the top of the groove, and the top of the plugging ring plate is provided with a limiting groove corresponding to the insertion rod, thereby effectively ensuring that the plugging ring plate manages the opening and closing of the feed channel on the center pile, which is convenient for effective control of the feeding process during the entire hot pressing process;
[0017] A mounting ring is fixedly installed on the middle part of the inner side of the sealing ring plate, and the distance between the mounting ring and the bottom end of the sealing ring plate matches the height of the step on the center pile, which effectively ensures that the sealing ring plate will drop down during the overall downward pressing of the upper mold. When the mounting ring fits with the top of the center pile, the feed channel is first sealed, and then during the process of the inner pressure ring descending for hot pressing, the sealing ring plate will not drop accordingly, and the cooperation of the telescopic spring, the insert rod and the upper limit groove on the sealing ring plate effectively avoids the influence of the feed sealing component on the overall descent of the upper mold to realize hot pressing, thereby ensuring the stability of the hot pressing process.
[0018] A method for producing a sealing packing ring production device, characterized in that it comprises the following steps:
[0019] S1. Material introduction: First, the old sealing filler ring fragments and master batch materials used for hot pressing molding are poured into the gap between the sealing ring and the top of the guide cone, so that the old sealing filler ring fragments and master batch materials are guided to the molding space enclosed between the outer cavity of the mold and the center pile at the feeding channel;
[0020] S2. Heating and exhausting: By energizing the external heating module and the internal heating module, the temperature of the inside and outside of the molding space can be controlled, so that the old sealing packing ring fragments and the masterbatch materials inside are melted under the action of high temperature. In this process, the melted materials are effectively fused, and the gaps between the previous materials are continuously stacked with the melted materials, so that the air in the gaps is continuously discharged under the action of the molten raw material precipitation, and is discharged at the external compression ring;
[0021] S3, initial pressing: first start the push rod motor, so that the connecting rod drives the upper mold to press down as a whole, until the bottom ends of the inner and outer pressing rings are in contact with the top surface of the molten raw material below, and in this process, the pressing is continuously performed, so that the molten raw material below is continuously discharged from the exhaust hole on the outer pressing ring under the pressure from above;
[0022] S4, complete blocking: when there are no bubbles in each group of exhaust holes, and the molten raw material below has a tendency to surge from the exhaust holes, the downward pressure heat sealing is stopped, and then the driving motor is started to realize the rotation of the driving gear, and the inner gear ring on the linkage ring is matched to drive the linkage ring to rotate, and then under the action of the outer gear ring on the linkage ring, the adjusting gear on each group of blocking components rotates, and the blocking screw tube is lowered under the action of torque and guidance. After the blocking screw tube is completely lowered, the bottom of the exhaust hole on the outer pressure ring is completely blocked, and the bottom of the overall inner pressure ring and the outer pressure ring are completely flush, thereby avoiding the phenomenon of material surge, and ensuring the flatness of the top surface of the molded part in the subsequent hot pressing molding process;
[0023] S5. Final pressing: When the bottom of the inner and outer pressing rings are completely flattened by the sealing screw, the pressing and heat-sealing process is restarted. At this time, there is no air in the raw materials below. During the pressing process, the overall distribution is more uniform. Since the bottom surfaces of the inner and outer pressing rings are flat, the exhaust holes are blocked synchronously, making the top surface of the pressed molded part flatter. The need to correct the top surface during the heat-sealing process of the molded part is eliminated, ensuring the homogenization of the interior of the finished product and the flatness of the surface of the finished product, thereby effectively improving the quality of the finished product.
[0024] The beneficial effects of the present invention are:
[0025] 1. Through the setting of the external heating module outside the device and the internal heating module inside, a high-temperature melting environment is effectively provided for the old sealing packing ring fragments and masterbatch materials entering, which accelerates the melting and provides the prerequisite guarantee for the discharge of air in the middle of the material and the homogeneity of the subsequent finished product;
[0026] 2. Through the arrangement of the inner and outer compression rings on the upper mold and the plugging assembly, the opening and closing of the exhaust hole on the outer compression ring is effectively controlled, which provides an effective guarantee for controlling the discharge of the internal raw material gas, so that the sealing packing ring pressed below can achieve the purpose of homogeneity, and can ensure the flatness of the bottom of the inner and outer compression rings, thereby ensuring the flatness of the top surface of the sealing packing ring below, thereby improving the quality of the interior and surface of the finished product;
[0027] 3. Through the feed plugging part on the upper mold, the feed channel on the lower mold, the setting of the plugging ring and the guide cone, the entry of the raw materials is effectively controlled, which facilitates the feeding process.
[0028] In summary, the present application effectively and conveniently controls the filling process, can also provide effective guarantees for the discharge of internal air during the actual production process of sealing packing rings, and ensure the flatness of the top surface of the finished product, so that the finished product can achieve the purpose of internal homogeneity and the effect of surface flatness, avoiding the disadvantage that conventional operations still require finishing of the finished product, improving quality, and saving processes. BRIEF DESCRIPTION OF THE DRAWINGS
[0029] Figure 1 A schematic structural diagram of a production device and method for a sealing packing ring proposed by the present invention;
[0030] Figure 2 This is a schematic diagram of the main structure of a production device and method for a sealing packing ring proposed by the present invention;
[0031] Figure 3 A schematic structural diagram of a lower mold, an external heating module and an upper mold of a production device and method for a sealing packing ring proposed by the present invention;
[0032] Figure 4 It is a structural schematic diagram of a lower mold of a production device and method for a sealing packing ring proposed by the present invention;
[0033] Figure 5 It is a structural schematic diagram of an upper mold of a production device and method for a sealing packing ring proposed by the present invention;
[0034] Figure 6 It is a partial cross-sectional structural schematic diagram of an upper mold of a production device and method for a sealing packing ring proposed by the present invention;
[0035] Figure 7 A schematic structural diagram of a feed plugging member of a production device and method for a sealing packing ring proposed by the present invention;
[0036] Figure 8 The present invention provides a schematic cross-sectional structural diagram of a lower mold and an upper mold in a matching state for a production device and method for a sealing packing ring.
[0037] In the figure: 1. lower mold; 11. mold outer cavity; 12. center pile; 13. sealing ring; 14. guide cone; 15. internal heating module; 2. external heating module; 3. upper mold; 31. internal pressure ring; 32. external pressure ring; 33. sealing screw; 34. fixing plate; 35. adjusting gear; 36. adjusting screw; 37. linkage ring; 38. driving gear; 39. feed sealing piece; 391. sealing ring plate; 392. telescopic spring; 393. insertion rod; 394. erection ring; 4. support frame; 5. top plate; 6. connecting rod; 7. push rod motor. DETAILED DESCRIPTION
[0038] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.
[0039] Reference Figure 1-Figure 8 , a production device for sealing packing rings, characterized in that it comprises:
[0040] The lower mold 1 includes a mold outer cavity 11, the top of the mold outer cavity 11 is open, and a center pile 12 is fixedly installed at the center of the inner cavity. The annular space enclosed by the mold outer cavity 11 and the center pile 12 is used to provide a molding space for hot pressing of the packing ring. The upper outer portion of the center pile 12 is provided with an annular step, and a feed channel obliquely penetrating to the top thereof is provided at the step;
[0041] The upper mold 3 is inserted into the inner upper part of the lower mold 1, and includes an inner compression ring 31 and an outer compression ring 32 that cooperate with the enclosed area of the upper mold outer cavity 11 and the center pile 12 of the lower mold 1 below. A plurality of exhaust holes are evenly arranged on the outer compression ring 32, and a plugging component corresponding to the exhaust holes is arranged on the outer upper part of the inner compression ring 31. A groove corresponding to the annular step on the center pile 12 is arranged on the inner lower part of the inner compression ring 31, and a feed plugging member 39 for controlling the opening and closing of the feed channel on the center pile 12 is installed at the groove to control the introduction of the masterbatch material produced by the sealing packing ring;
[0042] The top plate 5 is installed above the lower mold 1, and a plurality of support frames 4 are connected to the lower mold 1 to achieve stable installation of the top plate 5;
[0043] The push rod motor 7 is fixedly installed at the bottom center of the lower mold 1, and the output shaft of the push rod motor 7 is vertically downward, and is fixedly connected to the top of the upper mold 3 by several groups of connecting rods 6, which are used to realize the lifting and lowering of the upper mold 3, thereby realizing the stable progress of the subsequent hot pressing process.
[0044] Reference Figure 1-Figure 2 and Figure 8 An external heating module 2 is arranged around the lower outer part of the lower mold 1, and a cavity is arranged inside the center pile 12, and an internal heating module 15 is arranged in the cavity. With the arrangement of the external heating module 2 and the internal heating module 15, the master batch material entering between the outer cavity 11 of the mold and the center pile 12 is effectively heated and melted, which preliminarily reduces the generation of voids, provides temperature guarantee for the subsequent production of packing rings, and provides initial conditions.
[0045] Reference Figure 4 and Figure 8 A guide cone 14 is provided at the top of the center pile 12 on the inner side of the enclosed area of the feed channel, and a blocking ring 13 is installed on the outer side of the enclosed area of the feed channel. The coordinated operation of the blocking ring 13 and the guide cone 14 effectively ensures the stable introduction of the masterbatch material to avoid spillage.
[0046] Reference Figure 5-Figure 6 and Figure 8 The bottom end of the outer compression ring 32 is flush with the bottom end of the inner compression ring 31, and the coverage area of the inner compression ring 31 and the outer compression ring 32 coincides with the molding space between the mold outer cavity 11 and the center pile 12, ensuring the effective sealing of the lower space during the hot pressing molding process and ensuring the hot pressing effect.
[0047] The plugging assembly includes a fixing plate 34 fixedly mounted on the upper side of the inner pressure-locking ring 31, an adjusting screw 36 is rotatably arranged on the fixing plate 34, a sealing screw 33 is threadedly sleeved on the outer side of the bottom end of the adjusting screw 36, and a guide block is fixedly mounted on the side of the sealing screw 33, and a limiting slide groove for the sliding of the guide block is vertically opened on the outer side of the inner pressure-locking ring 31, and the vertical movement of the sealing screw 33 is achieved by the torque action between the adjusting screw 36 and the sealing screw 33 and the guiding action of the guide block, and when the sealing screw 33 moves to the bottom, the sealing The plugging screw 33 is fully extended into the exhaust hole on the outer compression ring 32, and the plugging screw 33 is completely consistent with the exhaust hole on the outer compression ring 32, thereby ensuring that during the hot pressing process, when the masterbatch below is completely melted and exhausted, the lower part is effectively closed to avoid the intervention of external air. At this time, the plugging screw 33 cooperates with the outer compression ring 32 and the bottom end of the inner compression ring 31 to make the molding space between the outer cavity 11 of the mold and the center pile 12 completely flat and pressed, ensuring the pressing effect and the flatness of the surface of the molded sealing filler ring.
[0048] The top of the adjusting screw 36 is coaxially connected with the adjusting gear 35, and the top of the inner compression ring 31 is provided with an annular groove, and a linkage ring 37 is rotatably arranged in the annular groove, the outer side of the linkage ring 37 is provided with an outer gear ring, and the outer gear ring is meshed with the adjusting gear 35, the inner side of the linkage ring 37 is provided with an inner gear ring, and a driving motor is fixedly installed on the top of the inner compression ring 31, and the top of the output shaft of the driving motor is coaxially connected with a driving gear 38, and the driving gear 38 is meshed with the inner gear ring on the linkage ring 37, and then under the action of the driving gear 38, the linkage ring 37 is effectively driven to rotate, so that the adjusting gears 35 on each group of blocking components are driven to rotate synchronously, so as to realize the stable vertical adjustment of the blocking screw tubes 33 on each group of blocking components, and realize the effective blocking treatment of the outer compression ring 32 below.
[0049] Reference Figure 7 The feed plugging member 39 includes a telescopic spring 392 connected to the bottom of the inner groove, and a plugging ring plate 391 that fits the step on the center pile 12 is bonded to the bottom end of the telescopic spring 392, and an insertion rod 393 that is fixedly connected to the inner wall of the top of the inner pressure ring 31 at the top of the groove is penetrated on the inner side of the telescopic spring 392, and a limiting groove corresponding to the insertion rod 393 is provided on the top of the plugging ring plate 391, thereby effectively ensuring that the plugging ring plate 391 manages the opening and closing of the feed channel on the center pile 12, which is convenient for effectively controlling the feeding process during the entire hot pressing process;
[0050] A mounting ring 394 is fixedly installed on the inner middle part of the sealing ring plate 391, and the distance between the mounting ring 394 and the bottom end of the sealing ring plate 391 is consistent with the height of the step on the center pile 12, which effectively ensures that the sealing ring plate 391 will descend during the overall downward pressing process of the upper mold 3. When the mounting ring 394 fits with the top of the center pile 12, the feed channel is first sealed, and then during the process of the inner pressure ring 31 descending for hot pressing, the sealing ring plate 391 will not descend accordingly, and the cooperation of the telescopic spring 392, the insertion rod 393 and the upper limit groove of the sealing ring plate 391 effectively avoids the influence of the feed sealing component 39 on the overall descent of the upper mold 3 to realize hot pressing, thereby ensuring the stable progress of the hot pressing process.
[0051] A method for producing a sealing packing ring production device comprises the following steps:
[0052] S1, material introduction: first, the old sealing filler ring fragments and master batch materials used for hot pressing molding are poured into the gap between the sealing ring 13 and the top of the guide cone 14, so that the old sealing filler ring fragments and the master batch materials are guided to the molding space enclosed between the mold outer cavity 11 and the center pile 12 at the feed channel;
[0053] S2, heating and exhausting: by energizing the external heating module 2 and the internal heating module 15, the temperature of the inner and outer sides of the molding space is controlled to rise, so that the old sealing packing ring fragments and the master batch material inside are melted under the action of high temperature, so that in this process, the melted materials are effectively fused, and the gaps between the previous materials are continuously stacked with the melted materials, so that the air in the gaps is continuously discharged under the action of the molten raw material precipitation, and is discharged at the outer compression ring 32;
[0054] S3, preliminary pressing: first start the push rod motor 7, so that the connecting rod 6 drives the upper mold 3 to press down as a whole, until the bottom ends of the inner pressing ring 31 and the outer pressing ring 32 are in contact with the top surface of the molten raw material below, and the pressing is continuously performed in this process, so that the molten raw material below is continuously discharged from the exhaust hole on the outer pressing ring 32 under the pressure from above;
[0055] S4, complete blocking: when no bubbles are generated in each group of exhaust holes, and the molten raw material below has a tendency to surge from the exhaust holes, the downward pressure heat sealing is stopped, and then the driving motor is started to realize the rotation of the driving gear 38, and the inner gear ring on the linkage ring 37 is matched to drive the linkage ring 37 to rotate, and then under the action of the outer gear ring on the linkage ring 37, the adjusting gear 35 on each group of blocking components is rotated, and the blocking screw 33 is lowered under the action of torque and guidance. After the blocking screw 33 is completely lowered, the bottom of the exhaust hole on the outer pressure ring 32 is completely blocked, and the bottom of the inner pressure ring 31 and the outer pressure ring 32 are completely flush, thereby avoiding the phenomenon of material surge, and ensuring the flatness of the top surface of the molded part in the subsequent hot pressing molding process;
[0056] S5. Final pressing: After the bottom of the inner and outer pressing rings 31 and 32 are completely flattened by the sealing screw 33, the pressing and heat-sealing process is restarted. At this time, there is no air in the raw materials below. During the pressing process, the overall distribution is more uniform. Since the bottom surfaces of the inner and outer pressing rings 31 and 32 are flat, the exhaust holes are blocked synchronously, so that the top surface of the pressed molded part is flatter, eliminating the need to correct the top surface during the heat-sealing process of the molded part, ensuring the homogenization of the inside of the finished product, and effectively ensuring the flatness of the surface of the finished product, thereby effectively improving the quality of the finished product.
[0057] Finally, it should be noted that in the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.
[0058] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of 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.
[0059] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A production device for sealing packing rings, characterized in that: include: The lower mold (1) comprises an outer mold cavity (11), the top of the outer mold cavity (11) is open, and a center pile (12) is fixedly installed at the center of the inner part, the annular space enclosed by the outer mold cavity (11) and the center pile (12) is used to provide a molding space for hot pressing the filler ring, and an annular step is provided on the upper outer side of the center pile (12), and a feed channel is provided at the step that is inclined and penetrates to the top of the center pile (12); The upper mold (3) is inserted into the upper inner part of the lower mold (1), and comprises an inner compression ring (31) and an outer compression ring (32) which cooperate with the enclosed area of the upper mold outer cavity (11) and the center pile (12) of the lower mold (1). The outer compression ring (32) is evenly provided with a plurality of exhaust holes, and the upper outer part of the inner compression ring (31) is provided with a plugging component corresponding to the exhaust holes. The lower inner part of the inner compression ring (31) is provided with a groove corresponding to the annular step on the center pile (12), and a feed plugging member (39) for controlling the opening and closing of the feed channel on the center pile (12) is installed at the groove. A top plate (5) is installed above the lower mold (1) and is connected to the lower mold (1) via a plurality of support frames (4); A push rod motor (7) is fixedly mounted at the center of the bottom end of the lower mold (1), and the output shaft of the push rod motor (7) is vertically downward, and is fixedly connected to the top end of the upper mold (3) by a plurality of connecting rods (6); The top end of the central pile (12) is provided with a guide cone (14) on the inner side of the enclosed area of the feed channel, and a blocking ring (13) is installed on the outer side of the enclosed area of the feed channel; The plugging assembly comprises a fixing plate (34) fixedly mounted on the upper side of the inner compression ring (31), an adjusting screw (36) rotatably extending through the fixing plate (34), a sealing screw tube (33) being threadedly sleeved on the outer side of the bottom end of the adjusting screw (36), a guide block being fixedly mounted on the side of the sealing screw tube (33), and a limiting slide groove for sliding the guide block is vertically opened on the outer side of the inner compression ring (31), the sealing screw tube (33) is vertically moved by the torque action between the adjusting screw (36) and the sealing screw tube (33) in coordination with the guiding action of the guide block, and when the sealing screw tube (33) moves to the bottom, the sealing screw tube (33) is completely extended into the exhaust hole on the outer compression ring (32), and the sealing screw tube (33) is completely matched with the exhaust hole on the outer compression ring (32); The top end of the adjusting screw rod (36) is coaxially connected to the adjusting gear (35), and the top end of the inner compression ring (31) is provided with an annular groove, and a linkage ring (37) is rotatably arranged in the annular groove, an outer gear ring is provided on the outer side of the linkage ring (37), and the outer gear ring meshes with the adjusting gear (35), an inner gear ring is provided on the inner side of the linkage ring (37), and a driving motor is fixedly installed on the top end of the inner compression ring (31), and a driving gear (38) is coaxially connected to the top end of the output shaft of the driving motor, and the driving gear (38) meshes with the inner gear ring on the linkage ring (37); The feed plugging member (39) comprises a telescopic spring (392) connected below the inner groove, a plugging ring plate (391) which is bonded to the bottom end of the telescopic spring (392) and fits the step on the center pile (12), and an insertion rod (393) is passed through the inner side of the telescopic spring (392) and is fixedly connected to the inner wall of the top end of the inner pressure ring (31) at the top end of the groove, and a limiting groove is formed at the top end of the plugging ring plate (391) and is inserted corresponding to the insertion rod (393); A mounting ring (394) is fixedly mounted on the middle portion of the inner side of the blocking ring plate (391), and the distance between the mounting ring (394) and the bottom end of the blocking ring plate (391) matches the height of the upper step of the center pile (12).
2. A production device for sealing packing rings according to claim 1, characterized in that: An external heating module (2) is arranged around the lower part of the outer side of the lower mold (1), and a cavity is arranged inside the center pile (12), and an internal heating module (15) is arranged inside the cavity.
3. The production device of a sealing packing ring according to claim 1, characterized in that: The bottom end of the outer compression ring (32) is flush with the bottom end of the inner compression ring (31), and the areas covered by the inner compression ring (31) and the outer compression ring (32) coincide with the molding space between the outer cavity (11) of the mold and the center pile (12).
4. A method for producing a sealing packing ring according to any one of claims 1 to 3, characterized in that: The following steps are involved: S1, material introduction: first, the old sealing filler ring fragments and master batch materials used for hot pressing molding are poured into the gap between the sealing ring (13) and the top of the guide cone (14), so that the old sealing filler ring fragments and the master batch materials are guided into the molding space enclosed between the mold outer cavity (11) and the center pile (12) at the feed channel; S2, heating and exhaust: by energizing the external heating module (2) and the internal heating module (15), the temperature of the inner and outer sides of the molding space is controlled to rise, so that the old sealing filler ring fragments and the master batch material inside are melted under the action of high temperature, and in this process, the melted materials are effectively fused, and the gaps between the previous materials are continuously stacked with the melted materials, so that the air in the gaps is continuously discharged under the action of the molten raw material precipitation, and is discharged at the external compression ring (32); S3, preliminary pressing: first start the push rod motor (7) to enable the connecting rod (6) to drive the upper mold (3) to press down as a whole until the bottom ends of the inner pressing ring (31) and the outer pressing ring (32) are in contact with the top surface of the molten raw material below. In this process, the pressing is continuously performed, so that the molten raw material below is continuously discharged from the exhaust hole on the outer pressing ring (32) under the action of the pressure from above; S4, complete blocking: when no bubbles are generated in each group of exhaust holes, and the molten raw material below has a tendency to surge from the exhaust holes, the downward pressure heat sealing is stopped, and then the driving motor is started to realize the rotation of the driving gear (38), and cooperate with the inner gear ring on the linkage ring (37), thereby driving the linkage ring (37) to rotate, and then under the action of the outer gear ring on the linkage ring (37), the adjusting gear (35) on each group of blocking components rotates, and the blocking screw (33) is lowered under the action of torque and guidance. After the blocking screw (33) is completely lowered, the bottom of the exhaust hole on the outer pressure ring (32) is completely blocked, and the bottom of the inner pressure ring (31) and the outer pressure ring (32) are completely flush, thereby avoiding the phenomenon of material surge, and ensuring the flatness of the top surface of the molded part in the subsequent hot pressing molding process; S5, final pressing: After the bottom of the inner pressing ring (31) and the outer pressing ring (32) are completely flattened by the plugging screw (33), the pressing and heat-sealing process is restarted. At this time, there is no air in the raw material below. During the pressing process, the overall distribution is more uniform. In addition, since the bottom surfaces of the inner pressing ring (31) and the outer pressing ring (32) are flat, the exhaust holes are blocked synchronously, so that the top surface of the pressed molded part is flatter, eliminating the need to correct the top surface during the heat-sealing process of the molded part, ensuring the homogenization of the inside of the finished product, and effectively ensuring the flatness of the surface of the finished product, thereby effectively improving the quality of the finished product.