CN220482302U - Sulfur-adding forming machine - Google Patents
Sulfur-adding forming machine Download PDFInfo
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- CN220482302U CN220482302U CN202322252288.9U CN202322252288U CN220482302U CN 220482302 U CN220482302 U CN 220482302U CN 202322252288 U CN202322252288 U CN 202322252288U CN 220482302 U CN220482302 U CN 220482302U
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- vulcanizing
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- panel
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- 230000007246 mechanism Effects 0.000 claims abstract description 94
- 238000010438 heat treatment Methods 0.000 claims abstract description 33
- 238000001816 cooling Methods 0.000 claims abstract description 31
- 230000001681 protective effect Effects 0.000 claims abstract description 15
- 239000002994 raw material Substances 0.000 claims abstract description 12
- 238000013459 approach Methods 0.000 claims abstract description 6
- 238000000465 moulding Methods 0.000 claims description 16
- 238000009413 insulation Methods 0.000 claims description 12
- 238000009423 ventilation Methods 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 8
- 238000004073 vulcanization Methods 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 238000012360 testing method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000005485 electric heating Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 206010053615 Thermal burn Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
Abstract
The utility model belongs to the technical field of mechanical equipment, and particularly relates to a vulcanizing forming machine, which comprises a rack, and an electric cabinet, a vulcanizing mechanism, a driving mechanism and a protective structure which are all arranged on a working table surface of the rack; the vulcanizing mechanism is arranged on one side of the electric cabinet and used for heating or cooling the raw materials; the driving mechanism is arranged at one side of the vulcanizing mechanism, which is far away from the electric cabinet, and the movable end of the driving mechanism is connected with the protective structure; the protection structure is connected to the frame in a sliding way, and is driven by the driving mechanism to approach the electric cabinet and separate the vulcanizing mechanism from the outside; the moving stroke of the protective structure is more than twice the width of the vulcanizing mechanism; the vulcanizing mechanism and the driving mechanism are electrically connected with the electric cabinet. Through the protective structure, the normal work of the vulcanizing mechanism is not affected, the effect of protecting the user can be achieved, the movement of the protective structure can be controlled through the electric cabinet, and the vulcanizing mechanism is simple to operate, safe and reliable.
Description
Technical Field
The utility model belongs to the technical field of mechanical equipment, and particularly relates to a vulcanization molding machine.
Background
The vulcanizing and forming machine is used for forming samples in various chemical enterprises. At present, an electric vulcanizing forming machine used in a laboratory mainly comprises a heating plate, a cooling plate, an electric cabinet, an oil pressure system and a refrigerating system. The electric heating plate is made of copper with high temperature in the inlet, and the surface is treated by deep carbonization hard chromium plating and other processes, so that the electric heating plate has the characteristics of high heat transfer speed, corrosion resistance, high hardness, no deformation and the like, and the back built-in heater and the temperature sensor have the characteristics of high power, high temperature rise speed, sensitive and uniform temperature measurement, small temperature error range and the like. The raw materials are placed in a casting mould, clamped between two heating plates, subjected to pressure and temperature for a certain time and pressure, and then placed between two lower cooling plates for cooling, so as to be used as the basis for mass production of ingredients in factories.
The utility model provides a vulcanization molding machine, its main uses is that test raw materials is after the mould pressing, research its physical properties's change and contrast, traditional vulcanization molding machine adopts manual mode, waste time and energy, because upper and lower mould adopts the mode of heating, touch on the hot plate by mistake easily when operating personnel pressurizes hydraulic system and cause the scald, and traditional vulcanization molding machine does not have protection device, and the operational environment of vulcanization molding machine is high pressure high temperature, causes the injury to operating personnel easily when carrying out the operation.
Disclosure of Invention
The utility model aims to provide a vulcanizing forming machine, which aims to solve the technical problems that the vulcanizing forming machine in the prior art has no protection device, the working environment of the vulcanizing forming machine is high pressure and high temperature, and the operating personnel are easy to be injured during operation.
In order to achieve the above purpose, the embodiment of the utility model provides a vulcanizing forming machine, which comprises a rack, and an electric cabinet, a vulcanizing mechanism, a driving mechanism and a protection structure which are all arranged on a working table surface of the rack; the vulcanizing mechanism is arranged on one side of the electric cabinet and is used for heating or cooling raw materials; the driving mechanism is arranged on one side, far away from the electric cabinet, of the vulcanizing mechanism, and the moving end of the driving mechanism is connected with the protection structure; the protection structure is connected to the frame in a sliding way, and is driven by the driving mechanism to approach the electric cabinet and separate the vulcanizing mechanism from the outside; the moving stroke of the protective structure is more than twice the width of the vulcanizing mechanism; the vulcanizing mechanism and the driving mechanism are electrically connected with the electric cabinet.
Optionally, a temperature sensor is installed in the protection structure, and the temperature sensor is in signal connection with the electric cabinet.
Optionally, two parallel and spaced sliding rails are arranged on the workbench surface of the rack, and the vulcanizing mechanism is arranged between the two sliding rails; the bottom of the protective structure is provided with sliding grooves corresponding to the two sliding rails, and the sliding rails are arranged in the sliding grooves.
Optionally, the anti-slip structure comprises a top plate, a side plate, a panel and a rear plate, wherein the panel and the rear plate are parallel and oppositely arranged, the top plate and the side plate are respectively connected with the panel and the rear plate, the top plate is connected with the tops of the panel and the rear plate, and the side plate is connected with one side of the panel and the rear plate, which is opposite to the vulcanizing mechanism; the bottom of the rear plate of the panel is provided with the sliding grooves; the top plate, the side plates, the panel and the rear plate enclose a space for accommodating the vulcanizing mechanism.
Optionally, a plurality of ventilation grooves are formed in the rear plate, and each ventilation groove penetrates through the rear plate.
Optionally, an observation window is arranged on the panel, and the observation window is used for observing the working condition of the vulcanizing mechanism.
Optionally, the bottom of curb plate is unsettled, the bottom of curb plate is greater than the height of slide rail from the table surface of frame.
Optionally, the vulcanizing mechanism comprises a first driving cylinder, a fixed plate, a first heating plate, a second heating plate, a heat insulation plate, a first cooling plate, a second driving cylinder and four guide posts; the first driving cylinder, the fixed plate, the first heating plate, the second heating plate, the heat insulation plate, the first cooling plate, the second cooling plate and the second driving cylinder are sequentially arranged downwards along the vertical direction; the four guide posts are arranged in a rectangular shape, and the fixing plate is fixed at the tops of the four guide posts; the first driving cylinder is fixed on the fixed plate; the first heating plate is connected with the four guide posts in a sliding manner and is connected with the moving end of the first driving cylinder; the heat insulation plate is connected with the second heating plate and the first cooling plate, and the second heating plate, the first cooling plate and the heat insulation plate are fixedly connected with the four guide posts; the second cooling plate is connected with the four guide posts in a sliding manner and is connected with the moving end of the second driving cylinder.
Optionally, a control panel is arranged on the electric cabinet.
Optionally, the actuating mechanism includes driving motor and drive assembly, driving motor's output with drive assembly is connected, drive assembly with the protection structure is connected, and is used for driving the horizontal migration of protection structure.
The above technical solutions in the vulcanizing and forming machine provided by the embodiments of the present utility model have at least one of the following technical effects: when the device is used, the protection structure is located away from the vulcanizing mechanism, the vulcanizing mechanism is exposed so as to be convenient for placing raw materials in the vulcanizing mechanism, then the driving mechanism is controlled by the electric cabinet to drive the protection structure to move towards the direction close to the electric cabinet until the protection structure accommodates the vulcanizing mechanism, and then the vulcanizing mechanism is started by the electric cabinet to start testing. Therefore, the normal work of the vulcanizing mechanism is not affected through the protective structure, the effect of protecting the user can be achieved, the movement of the protective structure can be controlled through the electric cabinet, and the vulcanizing machine is simple in operation, safe and reliable.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of a protection structure accommodating vulcanizing mechanism of a vulcanizing and forming machine according to an embodiment of the present utility model.
Fig. 2 is a schematic structural diagram of a protection structure of a vulcanizing molding machine far away from a vulcanizing mechanism according to an embodiment of the present utility model.
Fig. 3 is a schematic structural diagram of a vulcanizing machine according to another embodiment of the present utility model.
Fig. 4 is a schematic structural diagram of a vulcanizing mechanism according to an embodiment of the present utility model.
Fig. 5 is a schematic structural diagram of a protection structure according to an embodiment of the present utility model.
Wherein, each reference sign in the figure:
10-frame 11-slide rail 20-electric cabinet
21-control panel 30-vulcanizing mechanism 31-first driving cylinder
32-fixing plate 33-first heating plate 34-second heating plate
35-heat insulation board 36-first cooling board 37-second cooling board
38-second driving cylinder 39-guide post 40-driving mechanism
50-protective structure 51-chute 52-roof
53-side plate 54-face plate 55-back plate
56-ventilation slots 57-viewing windows.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to fig. 1 to 5 are exemplary and intended to illustrate embodiments of the present utility model and should not be construed as limiting the utility model.
In the description of the embodiments of the present utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the embodiments of the present utility model and simplify description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the embodiments of the present utility model, the meaning of "plurality" is two or more, unless explicitly defined otherwise.
In the embodiments of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like are to be construed broadly and include, for example, either permanently connected, removably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present utility model will be understood by those of ordinary skill in the art according to specific circumstances.
In one embodiment of the present utility model, as shown in fig. 1 to 5, there is provided a vulcanizing molding machine including a frame 10, and an electric cabinet 20, a vulcanizing mechanism 30, a driving mechanism 40, and a protective structure 50 all disposed on a table surface of the frame 10; the vulcanizing mechanism 30 is arranged at one side of the electric cabinet 20 and is used for heating or cooling raw materials; the driving mechanism 40 is arranged at one side of the vulcanizing mechanism 30 far away from the electric cabinet 20, and the moving end of the driving mechanism 40 is connected with the protective structure 50 so as to control the protective structure 50 to horizontally move on the frame 10 to approach or be far away from the vulcanizing mechanism 30; the protection structure 50 is slidably connected to the frame 10, and is driven by the driving mechanism 40 to approach the electric cabinet 20 and separate the vulcanizing mechanism 30 from the outside, so as to avoid scalding caused by touching the vulcanizing mechanism 30 when the vulcanizing mechanism 30 works; the moving stroke of the protection structure 50 is larger than twice the width of the vulcanizing mechanism 30, so that the protection structure 50 can be driven by the driving mechanism 40 to completely expose the vulcanizing mechanism 30, and the normal use of the vulcanizing mechanism 30 is prevented from being influenced; the vulcanizing mechanism 30 and the driving mechanism 40 are electrically connected with the electric cabinet 20.
Specifically, in use, the protection structure 50 is located away from the vulcanizing mechanism 30, and exposes the vulcanizing mechanism 30 to facilitate the placement of the raw materials into the vulcanizing mechanism 30, and then the driving mechanism 40 is controlled by the electric cabinet 20 to drive the protection structure 50 to move in a direction close to the electric cabinet 20 until the protection structure 50 accommodates the vulcanizing mechanism 30, and then the vulcanizing mechanism 30 is started by the electric cabinet 20 to start the test. Thus, the protection structure 50 does not influence the normal work of the vulcanizing mechanism 30, but also has the effect of protecting the user, and the electric cabinet 20 can control the movement of the protection structure 50, so that the operation is simple, safe and reliable.
In this embodiment, a temperature sensor (not shown) is installed in the protection structure 50, and the temperature sensor is in signal connection with the electric cabinet 20. Specifically, the temperature sensor may detect the temperature of the curing mechanism 30 during operation.
In this embodiment, as shown in fig. 1 to 3, two parallel spaced slide rails 11 are provided on the table surface of the frame 10, and the vulcanizing mechanism 30 is disposed between the two slide rails 11; the bottom of the protection structure 50 is provided with a sliding groove 51 corresponding to the two sliding rails 11, and the sliding rails 11 are arranged in the sliding groove 51. Specifically, the sliding rail 11 can limit the movement of the protection structure 50, so that the protection structure 50 keeps moving horizontally during the movement.
In this embodiment, as shown in fig. 5, the anti-slip structure includes a top plate 52, a side plate 53, a panel 57 and a rear plate 55, where the panel 57 and the rear plate 55 are parallel and opposite, the top plate 52 and the side plate 53 are respectively connected to the panel 57 and the rear plate 55, the top plate 52 is connected to the top of the panel 57 and the rear plate 55, and the side plate 53 is connected to the side of the panel 57 and the rear plate 55 facing away from the vulcanizing mechanism 30; the bottom of the rear plate 55 of the panel 57 is provided with a chute 51; the top plate 52, the side plates 53, the face plate 57, and the rear plate 55 enclose a space for accommodating the vulcanizing mechanism 30. Specifically, the top plate 52, the side plates 53, the face plate 57 and the rear plate 55 are connected in a square shape to form a space for accommodating the vulcanizing mechanism 30, and the distance from the top plate 52 to the table of the frame 10 is greater than the height of the vulcanizing mechanism 30. The top plate 52, the side plates 53, the face plate 57 and the rear plate 55 may be a metal plate or a metal fence structure.
In this embodiment, as shown in fig. 3, a plurality of ventilation grooves 56 are provided in the rear plate 55, and each ventilation groove 56 is provided to penetrate the rear plate 55. Specifically, ventilation and heat exchange may be achieved through ventilation slots 56.
In the present embodiment, as shown in fig. 1 to 3 and 5, an observation window 57 is provided on the panel 57, and the observation window 57 is used for observing the operation of the vulcanizing mechanism 30. Specifically, the user can observe the test condition conveniently through the observation window 57.
In this embodiment, as shown in fig. 5, the bottom of the side plate 53 is suspended, and the distance between the bottom of the side plate 53 and the table top of the frame 10 is greater than the height of the slide rail 11. Specifically, the bottom of the side plate 53 is suspended to realize the function of the clearance slide rail 11, so as to avoid affecting the movement of the protection structure 50.
In the present embodiment, as shown in fig. 2 to 4, the vulcanizing mechanism 30 includes a first driving cylinder 31, a fixing plate 32, a first heating plate 33, a second heating plate 34, a heat insulating plate 35, a first cooling plate 36, a second cooling plate 37, a second driving cylinder 38, and four guide posts 39; the first driving cylinder 31, the fixing plate 32, the first heating plate 33, the second heating plate 34, the heat insulation plate 35, the first cooling plate 36, the second cooling plate 37, and the second driving cylinder 38 are sequentially arranged downward in the vertical direction; the four guide posts 39 are arranged in a rectangular shape, and the fixing plate 32 is fixed on the top of the four guide posts 39; the first driving cylinder 31 is fixed to the fixed plate 32; the first heating plate 33 is in sliding connection with the four guide posts 39 and is connected with the moving end of the first driving cylinder 31; the heat insulation plate 35 is connected with the second heating plate 34 and the first cooling plate 36, and the second heating plate 34, the first cooling plate 36 and the heat insulation plate 35 are fixedly connected with four guide posts 39; the second cooling plate 37 is slidably connected to the four guide posts 39 and to the moving end of the second drive cylinder 38. Specifically, in use, the raw material is placed on the second heating plate 34, the first driving cylinder 31 drives the first heating plate 33 to approach the second heating plate 34 and tests the raw material, the heated raw material is placed on the second cooling plate 37, and the second cooling plate 37 drives the first cooling plate 36 to cool the raw material through the second driving cylinder 38.
In the present embodiment, as shown in fig. 1 to 2, a control panel 21 is provided on the electric cabinet 20. Specifically, the driving mechanism 40 and the vulcanizing mechanism 30 can be controlled to perform corresponding operations by the control panel 21.
In this embodiment, the driving mechanism 40 includes a driving motor and a transmission assembly, an output end of the driving motor is connected with the transmission assembly, and the transmission assembly is connected with the protection structure 50 and is used for driving the protection structure 50 to move horizontally. Specifically, the transmission assembly may be a belt transmission structure, and a fixing block is connected to the belt, and the fixing block is connected to the protection structure 50, and the belt rotates to drive the fixing block to move so as to realize the movement of the protection structure 50.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (10)
1. A vulcanizing and forming machine, which is characterized in that: comprises a frame, an electric cabinet, a vulcanizing mechanism, a driving mechanism and a protective structure which are all arranged on a working table surface of the frame; the vulcanizing mechanism is arranged on one side of the electric cabinet and is used for heating or cooling raw materials; the driving mechanism is arranged on one side, far away from the electric cabinet, of the vulcanizing mechanism, and the moving end of the driving mechanism is connected with the protection structure; the protection structure is connected to the frame in a sliding way, and is driven by the driving mechanism to approach the electric cabinet and separate the vulcanizing mechanism from the outside; the moving stroke of the protective structure is more than twice the width of the vulcanizing mechanism; the vulcanizing mechanism and the driving mechanism are electrically connected with the electric cabinet.
2. The vulcanizing molding machine as claimed in claim 1, wherein: the protection structure is internally provided with a temperature sensor which is in signal connection with the electric cabinet.
3. The vulcanizing molding machine as claimed in claim 1, wherein: the workbench surface of the rack is provided with two parallel and spaced sliding rails, and the vulcanizing mechanism is arranged between the two sliding rails; the bottom of the protective structure is provided with sliding grooves corresponding to the two sliding rails, and the sliding rails are arranged in the sliding grooves.
4. A vulcanization molding machine as set forth in claim 3, wherein: the protection structure comprises a top plate, side plates, a panel and a rear plate, wherein the panel and the rear plate are parallel and are oppositely arranged, the top plate and the side plates are respectively connected with the panel and the rear plate, the top plate is connected to the tops of the panel and the rear plate, and the side plates are connected to one sides of the panel and the rear plate, which are opposite to the vulcanizing mechanism; the bottom of the rear plate of the panel is provided with the sliding grooves; the top plate, the side plates, the panel and the rear plate enclose a space for accommodating the vulcanizing mechanism.
5. The vulcanizing molding machine as claimed in claim 4, wherein: the back plate is provided with a plurality of ventilation grooves, and each ventilation groove penetrates through the back plate.
6. The vulcanizing molding machine as claimed in claim 4, wherein: the panel is provided with an observation window which is used for observing the working condition of the vulcanizing mechanism.
7. The vulcanizing molding machine as claimed in claim 4, wherein: the bottom of the side plate is suspended, and the distance between the bottom of the side plate and the working table surface of the rack is greater than the height of the sliding rail.
8. The vulcanizing and molding machine according to any one of claims 1 to 7, wherein: the vulcanizing mechanism comprises a first driving cylinder, a fixed plate, a first heating plate, a second heating plate, a heat insulation plate, a first cooling plate, a second driving cylinder and four guide posts; the first driving cylinder, the fixed plate, the first heating plate, the second heating plate, the heat insulation plate, the first cooling plate, the second cooling plate and the second driving cylinder are sequentially arranged downwards along the vertical direction; the four guide posts are arranged in a rectangular shape, and the fixing plate is fixed at the tops of the four guide posts; the first driving cylinder is fixed on the fixed plate; the first heating plate is connected with the four guide posts in a sliding manner and is connected with the moving end of the first driving cylinder; the heat insulation plate is connected with the second heating plate and the first cooling plate, and the second heating plate, the first cooling plate and the heat insulation plate are fixedly connected with the four guide posts; the second cooling plate is connected with the four guide posts in a sliding manner and is connected with the moving end of the second driving cylinder.
9. The vulcanizing and molding machine according to any one of claims 1 to 7, wherein: and a control panel is arranged on the electric cabinet.
10. The vulcanizing and molding machine according to any one of claims 1 to 7, wherein: the driving mechanism comprises a driving motor and a transmission assembly, wherein the output end of the driving motor is connected with the transmission assembly, and the transmission assembly is connected with the protection structure and is used for driving the protection structure to horizontally move.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322252288.9U CN220482302U (en) | 2023-08-21 | 2023-08-21 | Sulfur-adding forming machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322252288.9U CN220482302U (en) | 2023-08-21 | 2023-08-21 | Sulfur-adding forming machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220482302U true CN220482302U (en) | 2024-02-13 |
Family
ID=89842429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322252288.9U Active CN220482302U (en) | 2023-08-21 | 2023-08-21 | Sulfur-adding forming machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220482302U (en) |
-
2023
- 2023-08-21 CN CN202322252288.9U patent/CN220482302U/en active Active
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