New type split material blocking plate for laboratory proofing machine
Patent Information
- Application Number
- CN202522527695.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-28
- Publication Date
- 2026-10-09
- Estimated Expiration
- 2035-11-28
AI Technical Summary
2）.漏出的料落在接料盘内形成冷料，重新送入打样机混炼，会延长打样时间
1）前挡板上部一体的前连接板通过螺栓固定在与前辊中心轴端部的前轴承座连接的第一耳板上，后挡板上部一体的后连接板通过螺栓固定在与后辊中心轴端部的后轴承座连接的第二耳板上，这样前挡板可随着前辊在使用过程中由于前轴承座的间隙变化而移动，后挡板可随着前辊在使用过程中由于后轴承座的间隙变化而移动，从而使前挡板下部的前圆弧边缘与前辊之间的密封性基本不变，后挡板下部的后圆弧边缘与后辊之间的密封性基本不变，解决了前辊和后辊在旋转过程中挡料板与辊面间隙的变化而产生漏料的问题。
Smart Images
Figure CN224827331U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of PVC calendering production laboratory equipment, specifically relating to a new type of split baffle for laboratory sample making machines. Background Technology
[0002] Before PVC calendering production, to facilitate formula determination and pigment proportion determination, a simulation experiment is required in the laboratory using a two-roll open mill (also called a prototyping machine). To ensure the experimental data is relevant to calendering production, the prototyping machine must strictly adhere to the temperature, formula, and pigment addition ratio required for actual calendering production. A typical laboratory prototyping machine, such as... Figure 1 As shown, the assembly includes a front roller 1 (packing roller) and a rear roller 2 (translation roller). The left and right ends of the front roller 1 and the rear roller 2 are rotatably connected to the left machine wall 3 and the right machine wall 4 respectively via bearing seats. The right end of the central shaft of the front roller 1 is connected to a front heating rotary joint 5, and the right end of the central shaft of the rear roller 2 is connected to a rear heating rotary joint 6. The left ends of the central shafts of both the front roller 1 and the rear roller 2 are equipped with meshing gears. A motor for driving one gear is installed on the frame below the left machine wall 3. Under the drive of the motor, the front roller 1 and the rear roller 2 can rotate in opposite directions. During operation, heat transfer oil is used to heat the front roller 1 and the rear roller 2. The mixture composed of the components of the designed formula and pigment ratio is plasticized under the hot state of the front roller 1 and the rear roller 2, calendered into a thin sheet, and then rolled into a roll. The film is fed into the tiny (5-10 mil) gap formed by the front roller 1 and the rear roller 2, and this process is repeated until a uniformly plasticized film of the required thickness is calendered. Then, the foaming, color difference from the sealed sample, and feel are compared in a laboratory oven. If there are deviations, the addition ratio is adjusted promptly. Traditional sample-making machines have two sets of identical and symmetrical baffle plates 13. On the right side of the left machine wall 3, there are a left front ear plate 7 and a left rear ear plate 8. The left baffle plate 9 is bolted to the right side of the left front ear plate 7 and the left rear ear plate 8. On the left side of the right machine wall 4, there are a right front ear plate 11 and a right rear ear plate 12. The right baffle plate 10 is bolted to the left side of the right front ear plate 11 and the right rear ear plate 12. The left baffle plate 9 and the right baffle plate 10 have the same structure. Figure 2As shown, this is an integral structure. This design is flawed, leading to material leakage during the plasticizing process. This leakage occurs through the gap between the lower arc edge and the rear roller surface, causing several problems: 1) The leaked strips of material fall into the receiving tray below the two rollers, requiring immediate re-feeding into the sample-making machine for mixing, increasing labor intensity. 2) The leaked material forms cold material in the receiving tray, requiring re-feeding into the sample-making machine, prolonging sample-making time. 3) When sampling transparent or white materials, the leaked material risks contamination. Re-feeding affects transparency and whiteness; not re-feeding may affect the proportion of added components, misleading production. Therefore, a good sample-making machine should not allow material leakage at the end baffles of the two rollers, and traditional integral baffles cannot completely prevent leakage. Utility Model Content
[0003] In order to solve the above-mentioned technical problems in the prior art, this utility model provides a new type of split baffle for laboratory sample making machine with good sealing performance, adjustable according to the position of the rear roller, and ensuring sealing performance.
[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a novel split baffle for a laboratory sample making machine, comprising a front baffle and a rear baffle, wherein the rear side of the front baffle is connected to the front side of the rear baffle, the lower side of the front baffle is provided with a front arc edge that mates with the upper rear part of the outer circle of the front roller, and the lower side of the rear baffle is provided with a rear arc edge that mates with the upper front part of the outer circle of the rear roller, the upper part of the front baffle is connected to the front bearing seat at the end of the central shaft of the front roller through a first ear plate, and the upper part of the rear baffle is connected to the rear bearing seat at the end of the central shaft of the rear roller through a second ear plate.
[0005] The upper part of the front baffle is provided with an outwardly bent front connecting plate. The front connecting plate has two front elongated holes that connect to the first ear plate. The two front elongated holes are arranged at intervals, and the length direction of the front elongated holes is the height direction.
[0006] The upper part of the rear baffle is provided with an outwardly bent rear connecting plate. The rear connecting plate has two rear elongated holes that connect to the second ear plate. The two rear elongated holes are arranged at intervals, and the length direction of the rear elongated holes is the height direction.
[0007] The inner side of the front baffle has a guide protrusion that covers the vertical gap at the joint between the front baffle and the rear baffle. The outer contour of the horizontal cross section of the guide protrusion is an arc segment. The lower front part of the guide protrusion has a front arc edge corresponding to the front arc edge of the front baffle, and the lower rear part of the guide protrusion has a rear arc edge corresponding to the rear arc edge of the rear baffle.
[0008] The front and inner sides of the front baffle are provided with a front guide arc transition structure.
[0009] The rear side and inner side of the rear baffle are provided with a rear guide arc transition structure.
[0010] By adopting the above technical solution, compared with the prior art, this utility model has the following technical effects: 1) The upper part of the front baffle is integrally connected to the front connecting plate, which is bolted to the first ear plate connected to the front bearing seat at the end of the front roller's central shaft. The upper part of the rear baffle is integrally connected to the rear connecting plate, which is bolted to the second ear plate connected to the rear bearing seat at the end of the rear roller's central shaft. In this way, the front baffle can move as the gap of the front bearing seat changes during the use of the front roller, and the rear baffle can move as the gap of the rear bearing seat changes during the use of the front roller. This ensures that the sealing between the lower front arc edge of the front baffle and the front roller remains basically unchanged, and the sealing between the lower rear arc edge of the rear baffle and the rear roller remains basically unchanged. This solves the problem of material leakage caused by the change in the gap between the baffle plate and the roller surface during the rotation of the front and rear rollers.
[0011] 2) Both the front and rear baffles are made of Teflon material, which is resistant to high temperatures, does not deform at high temperatures, and is easy to clean. Even if the front baffle contacts the front roller and the rear baffle contacts the rear roller, the roller surface will not be damaged.
[0012] 3) The front arc edge at the bottom of the front baffle and the front arc edge at the lower front side of the guide protrusion jointly seal the front roller surface, while the rear arc edge at the bottom of the rear baffle and the rear arc edge at the lower rear side of the guide protrusion jointly seal the rear roller surface. The front baffle and the guide protrusion are an integral structure, and their front arc edges will not move relative to each other. The inner front side of the rear baffle and the outer rear half of the guide protrusion fit together to form a planar seal. The rear baffle and the guide protrusion are not an integral structure. When the rear roller moves in the opposite direction (rearward) to the front roller, the rear baffle moves synchronously with the rear roller, increasing the gap between the rear arc edge at the lower rear side of the guide protrusion and the rear roller surface. However, material leakage is still prevented by the rear baffle. At the same time, the guide protrusion blocks the vertical gap at the joint between the front and rear baffles, also achieving a good sealing effect.
[0013] 4) During the sampling process, the guide protrusion plays a good guiding role for the mixture on the left and right sides. Under the guidance of the inner arc surface of the guide protrusion, the mixture rolls from the edge of the front roller and the rear roller towards the middle, thereby reducing the pressure of the mixture on the baffle plates on the left and right sides, and improving the mixing efficiency and effect.
[0014] 5) The upper elongated hole on the front connecting plate and the lower elongated hole on the rear connecting plate: After the front arc edge of the lower part of the front baffle and the rear arc edge of the lower part of the rear baffle are worn, the bolts passing through the upper elongated hole and the lower elongated hole can be loosened, and the front baffle and the rear baffle can be moved downward to reduce the gap with the roller surface. Zero material leakage can still be achieved, thereby extending the service life of the baffle plate.
[0015] 6) The circular arc transition structure of the front guide and the circular arc transition structure of the rear guide serve to roll the mixture from the edges of the front and rear rollers towards the center during the sampling process, reducing the pressure of the material on the baffle plate and improving the mixing efficiency and effect.
[0016] In summary, this utility model improves the overall structure of the baffle plate into a split structure of a front baffle and a rear baffle, and sets up a material guiding protrusion to cover the vertical gap between the front baffle and the rear baffle, which has a good sealing effect and also serves as a middle material guide. At the same time, the gap can be adjusted by the wear of the sealing surface, which basically eliminates the problem of material leakage. Attached Figure Description
[0017] Figure 1 A top view of the structure of a laboratory prototyping machine with traditional baffles installed on both sides; Figure 2 A schematic diagram of the elevation structure of a laboratory prototyping machine with a traditional baffle plate and front and rear rollers. Figure 3 This is a schematic diagram of the overall structure of this utility model; Figure 4 for Figure 3 Three views of the front center panel; Figure 5 for Figure 3 Three views of the middle and rear baffle; Figure 6 This is a top view of the structure of the present invention installed on the left and right sides of the laboratory sample making machine; Figure 7 This is a schematic diagram of the elevation structure of the present invention installed on a laboratory sample making machine and in conjunction with the front and rear rollers. Figure 8 This is a schematic diagram of the elevation structure of the present invention when the rear roller of the laboratory prototyping machine moves backward. Detailed Implementation
[0018] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0019] like Figures 3-8As shown, the novel split-type baffle for laboratory sample making machine of this utility model includes a front baffle 20 and a rear baffle 21. The rear side of the front baffle 20 is connected to the front side of the rear baffle 21. The lower side of the front baffle 20 is provided with a front arc edge 22 that mates with the upper rear part of the outer circle of the front roller 1. The lower side of the rear baffle 21 is provided with a rear arc edge 23 that mates with the upper front part of the outer circle of the rear roller 2. The upper part of the front baffle 20 is connected to the front bearing seat at the end of the central shaft of the front roller 1 through a first ear plate 24. The upper part of the rear baffle 21 is connected to the rear bearing seat at the end of the central shaft of the rear roller 2 through a second ear plate 25.
[0020] The upper part of the front baffle 20 is provided with an outwardly bent front connecting plate 26. The front connecting plate 26 has two front elongated holes 27 that are connected to the first ear plate 24. The two front elongated holes 27 are arranged at intervals, and the length direction of the front elongated holes 27 is the height direction.
[0021] The upper part of the rear baffle 21 is provided with an outwardly bent rear connecting plate 28. The rear connecting plate 28 has two rear elongated holes 29 that are connected to the second ear plate 25. The two rear elongated holes 29 are arranged at intervals, and the length direction of the rear elongated holes 29 is the height direction.
[0022] A material guide protrusion 30 is provided on the inner side of the front baffle 20 to cover the vertical gap at the joint between the front baffle 20 and the rear baffle 21. The outer contour of the horizontal cross section of the material guide protrusion 30 is an arc segment. The lower front part of the material guide protrusion 30 is provided with a front arc edge 31 corresponding to the front arc edge 22 of the front baffle 20, and the lower rear part of the material guide protrusion 30 is provided with a rear arc edge 32 corresponding to the rear arc edge 23 of the rear baffle 21.
[0023] The front baffle 20 has a front guide arc transition structure 33 at the corner of the front side and the inner side.
[0024] The rear baffle 21 has a rear guide arc transition structure 34 at the corner of the rear side and the inner side.
[0025] The working principle and technical effects of this utility model are as follows: 1) The front connecting plate 26 integrally formed on the upper part of the front baffle 20 is fixed to the first ear plate 24 connected to the front bearing seat at the end of the central shaft of the front roller 1 by bolts. The rear connecting plate 28 integrally formed on the upper part of the rear baffle 21 is fixed to the second ear plate 25 connected to the rear bearing seat at the end of the central shaft of the rear roller 2 by bolts. In this way, the front baffle 20 can move as the gap of the front bearing seat changes during the use of the front roller 1, and the rear baffle 21 can move as the gap of the rear bearing seat changes during the use of the front roller 1. This makes the sealing between the front arc edge 22 at the lower part of the front baffle 20 and the front roller 1 basically unchanged, and the sealing between the rear arc edge 23 at the lower part of the rear baffle 21 and the rear roller 2 basically unchanged. This solves the problem of material leakage caused by the change of the gap between the baffle plate and the roller surface during the rotation of the front roller 1 and the rear roller 2.
[0026] 2) Both the front baffle 20 and the rear baffle 21 are made of Teflon material, which is resistant to high temperature, does not deform at high temperature, and is easy to clean. Even if the front material plate is in contact with the front roller 1 and the rear baffle 21 is in contact with the rear roller 2, the roller surface will not be damaged.
[0027] 3) The front arc edge 22 at the bottom of the front baffle 20 and the front arc edge 31 at the lower front side of the guide protrusion 30 together seal the surface of the front roller 1. The rear arc edge 23 at the bottom of the rear baffle 21 and the rear arc edge 32 at the lower rear side of the guide protrusion 30 together seal the surface of the rear roller 2. The front baffle 20 and the guide protrusion 30 are an integral structure, and the front arc edge 22 and the front arc edge 31 will not move relative to each other. The inner front side of the rear baffle 21 and the outer rear half of the guide protrusion 30 are fitted together to form a planar seal. The rear baffle 21 and the guide protrusion 30 are not an integral structure. When the rear roller 2 moves in the opposite direction (backward) to the front roller 1, the rear baffle 21 moves synchronously with the rear roller 2. The gap between the rear arc-shaped edge 32 of the lower rear side of the guide protrusion 30 and the roller surface of the rear roller 2 increases, but there will still be no leakage of material under the obstruction of the rear baffle 21. At the same time, the guide protrusion 30 covers the vertical gap 35 at the joint between the front baffle 20 and the rear baffle 21, which also plays a good sealing role.
[0028] 4) During the sampling process, the guide protrusion 30 plays a good guiding role for the mixture on the left and right sides. Under the guidance of the inner arc surface of the guide protrusion 30, the mixture rolls from the edge of the front roller 1 and the rear roller 2 towards the middle, thereby reducing the pressure of the mixture on the baffle plates on the left and right sides, and improving the mixing efficiency and effect.
[0029] 5) The upper elongated hole on the front connecting plate 26 and the lower elongated hole on the rear connecting plate 28, after the front arc edge 22 of the lower part of the front baffle 20 and the rear arc edge 23 of the lower part of the rear baffle 21 are worn, the bolts passing through the upper elongated hole and the lower elongated hole can be loosened, and the front baffle 20 and the rear baffle 21 can be moved downward to reduce the gap with the roller surface. Zero material leakage can still be achieved, thereby extending the service life of the baffle plate.
[0030] 6) The front guide arc transition structure 33 and the rear guide arc transition structure 34 play a role in rolling the mixture from the edges of the front roller 1 and the rear roller 2 towards the middle during the sampling process, reducing the pressure of the material on the baffle plate, and improving the mixing efficiency and effect.
[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solution of this utility model, and these modifications or equivalent substitutions cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of this utility model.
Claims
1. A novel split-type baffle for laboratory prototyping machines, characterized in that: It includes a front baffle and a rear baffle. The rear side of the front baffle is connected to the front side of the rear baffle. The lower side of the front baffle is provided with a front arc edge that matches the upper rear part of the outer circle of the front roller. The lower side of the rear baffle is provided with a rear arc edge that matches the upper front part of the outer circle of the rear roller. The upper part of the front baffle is connected to the front bearing seat at the end of the central shaft of the front roller through a first ear plate. The upper part of the rear baffle is connected to the rear bearing seat at the end of the central shaft of the rear roller through a second ear plate.
2. The novel split-type baffle for laboratory sample making machine according to claim 1, characterized in that: The upper part of the front baffle is provided with an outwardly bent front connecting plate. The front connecting plate has two front elongated holes that connect to the first ear plate. The two front elongated holes are arranged at intervals, and the length direction of the front elongated holes is the height direction.
3. The novel split-type baffle for laboratory sample making machine according to claim 1, characterized in that: The upper part of the rear baffle is provided with an outwardly bent rear connecting plate. The rear connecting plate has two rear elongated holes that connect to the second ear plate. The two rear elongated holes are arranged at intervals, and the length direction of the rear elongated holes is the height direction.
4. The novel split-type baffle for a laboratory sample making machine according to any one of claims 1-3, characterized in that: The inner side of the front baffle has a guide protrusion that covers the vertical gap at the joint between the front baffle and the rear baffle. The outer contour of the horizontal cross section of the guide protrusion is an arc segment. The lower front part of the guide protrusion has a front arc edge corresponding to the front arc edge of the front baffle, and the lower rear part of the guide protrusion has a rear arc edge corresponding to the rear arc edge of the rear baffle.
5. The novel split-type baffle for a laboratory sample making machine according to claim 2, characterized in that: The front and inner sides of the front baffle are provided with a front guide arc transition structure.
6. The novel split-type baffle for a laboratory sample making machine according to claim 3, characterized in that: The rear side and inner side of the rear baffle are provided with a rear guide arc transition structure.