A polishing mechanism for a rubber strip PE welding machine

Abstract

The utility model discloses a kind of rubber strip PE welding machines with polishing mechanism, it is related to rubber sealing strip welding butt joint equipment field, to solve the angle deviation, cross section excess or defect, 3M glue retraction and other adverse conditions that can appear to rubber strip without being pretreated before existing PE butt joint is carried out. The utility model includes polishing component, positioning fine adjustment component and lifting drive component, polishing component is rotated synchronously by single motor drive coaxial double polishing saw blade, realize both sides rubber strip synchronous efficient polishing, make the effect of both sides rubber strip polished consistent;Positioning fine adjustment component adopts screw linkage double moving plate, expand or shrink by inclined guide groove drive parallel push plate, accurately abutting different size rubber strip inner end, cooperate range board visual adjustment to improve positioning accuracy;Lifting drive component is realized stable lifting by chain transmission and slide rail cooperation;Polishing saw blade outside is provided with bottom dust extraction's protective cover, combined with inclined blade edge airflow auxiliary cleaning, effectively collect chippings. The utility model has the advantages of efficient polishing, self-adapting adjustment, stable lifting and environmental protection dust removal, significantly improve rubber strip PE welding quality and production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of rubber sealing strip welding and butt welding equipment, and in particular to a grinding mechanism for a PE rubber strip welding machine. Background Technology

[0002] Currently, the process of welding rubber strips to PE films mainly involves heating the ends to be welded to the PE film using an IR lamp. This heats the rubber strip and PE film to a suitable temperature for welding. Then, the mechanical structure of the equipment presses the two ends of the rubber strip and the PE film together, bonding them into a single unit. While this welding machine has a relatively simple structure and is easy to manufacture, it also has several drawbacks. First, the angle of the rubber strip product mating mold is fixed, which places high demands on the cutting angle of the rubber strip. The angle of the rubber strip is pre-processed before the PE film is pasted. If the cutting angle is too large or too small, the result will be that the angle of the pasted product does not match the required angle of the mating product, which can easily lead to poor adhesion and cracking after mating, resulting in poor quality. Second, during the pre-cutting of the rubber strip, due to factors such as tooling fixtures and cutting tools, some parts of the cut surface may not be removed or may be missing even if the cutting angle is correct, which will result in poor quality of the mated product. Third, most products that are mated with PE film have 3M tape pasted on the rubber strip. Because 3M tape is elastic, it will automatically retract towards the side with tape after cutting. This will cause the 3M tape to be shorter than the body of the rubber strip. The mated products will not be able to stick together at the 3M tape area, resulting in gaps. When installed in automobiles or other places that require airtightness, the gaps where the 3M tape is not properly joined will lead to water or air leakage, ultimately affecting the quality of the product.

[0003] In order to effectively solve the above-mentioned problems, this utility model proposes a grinding mechanism for a rubber strip PE welding machine, which grinds the joint part of the rubber strip before PE jointing. Utility Model Content

[0004] (1) Technical problems to be solved

[0005] To address the aforementioned problems in the prior art and to overcome its shortcomings, this utility model provides a grinding mechanism for a PE rubber strip welding machine that can be reasonably manufactured and used.

[0006] (2) Technical solution

[0007] To address the problems of the aforementioned welding machines and the shortcomings of the manufactured products, our company has designed and developed a mechanism that grinds the joint portion of the rubber strips before PE bonding. This process removes defects such as pre-cut angle deviations, excess or missing sections, and 3M tape shrinkage from the rubber strips. A grinding saw blade smooths the joint surface, ensuring complete alignment and a perfect fit with the bonding mold. This results in a product that is not only aesthetically pleasing and strong but also free from leaks, completely resolving and improving upon the aforementioned issues. Therefore, to solve the above technical problems, this utility model provides a grinding mechanism for a rubber strip PE welding machine, including a grinding component. A positioning fine-adjustment component is fixed to the top of the grinding component, and the grinding component is driven to rise and fall by a lifting drive component.

[0008] The grinding assembly includes a first grinding saw blade and a second grinding saw blade that are synchronously driven by a grinding motor. After the first grinding saw blade and the second grinding saw blade rise, they synchronously grind the rubber strips on both sides of the positioning and fine-tuning assembly.

[0009] The positioning fine-tuning component includes a first push plate and a second push plate, which are parallel to each other and move inward or outward synchronously; after adjustment, the first push plate and the second push plate respectively abut against the inner ends of the rubber strips on both sides.

[0010] Preferably, the polishing assembly includes a movable frame, a polishing motor is mounted on the bottom of the movable frame, and a pulley is mounted on the output end of the polishing motor;

[0011] The first and second grinding saw blades are coaxially mounted on the movable frame. A pulley is also mounted on the coaxial connection between the first and second grinding saw blades. This pulley is connected to the pulley at the output end of the grinding motor via a belt.

[0012] Preferably, a pressure plate is added to the outer side of the first and second grinding saw blades;

[0013] The movable frame has a movable side plate on the side facing the lifting drive assembly, and the movable side plate has a first slider that matches the lifting drive assembly.

[0014] Preferably, the movable frame is provided with protective covers on both outward sides, the top of the protective cover is open and the bottom is sealed, and the bottom of the protective cover is connected to a dust extraction pipe.

[0015] The protective covers on both sides are respectively located on the outside of the pressure plate of the first grinding saw blade and the outside of the pressure plate of the second grinding saw blade.

[0016] Preferably, the positioning fine-tuning component includes a mounting plate, which is reinforced on the top of the movable frame of the grinding component;

[0017] A mounting base is installed above the mounting plate. The mounting base includes a screw placement groove, in which a screw is assembled. The front end of the screw is limited by a pressure block at the front end of the mounting base. After assembly, by rotating the screw, the first push plate and the second push plate move inward or outward synchronously.

[0018] Preferably, the mounting base is provided with a first movable plate that cooperates with a first push plate and a second movable plate that cooperates with a second push plate, and the first movable plate and the second movable plate are stacked on top of each other and move in the movable plate placement groove of the mounting base;

[0019] The first movable plate has a first guide groove in the middle that is inclined toward the second push plate, and the first movable plate has a lower step on the side facing the first push plate.

[0020] The second movable plate has a second guide groove in the middle that is inclined toward the first push plate, and the second movable plate has an upper step on the side facing the second push plate.

[0021] The first movable plate is pressed onto the second movable plate, and the first movable plate and the second movable plate have the same thickness;

[0022] The screw is provided with a second slider that moves along the screw. The second slider is adapted to be installed in the screw placement groove. The second slider is vertically provided with a moving column facing upward. The moving column is set upward and passes through the second guide groove and the first guide groove at the same time.

[0023] When not in use, the side of the first movable plate away from the lower step is abutted against the upper step, and the side of the second movable plate away from the upper step is abutted against the lower step.

[0024] Preferably, a first insert block is installed on the side of the first movable plate facing the first push plate, and a second insert block is installed on the side of the second movable plate facing the second push plate.

[0025] Preferably, a sliding head is sleeved on the top of the moving column, the sliding head moves on the measuring plate on the top of the mounting seat, the measuring plate is provided with a moving groove in the middle that matches the moving direction of the moving column, and the measuring range is provided on the outer side of the moving groove.

[0026] A baffle plate is sleeved in the middle of the sliding head. The length of the baffle plate is greater than the length of the marked range. The baffle plate covers the range plate and moves.

[0027] Preferably, the bottom of the mounting base is provided with a downwardly inclined pressure plate, and a blade is threadedly installed on the pressure plate, with the airflow direction of the blade facing the direction of the first grinding saw blade and the second grinding saw blade, respectively.

[0028] Preferably, the lifting drive assembly includes a fixed frame installed on one side of the grinding assembly. A chain is provided inside the frame of the fixed frame. The two ends of the chain are respectively sleeved on the driving sprocket and the driven sprocket. The driving sprocket is connected to the output end of the lifting motor, and the driven sprocket is installed at the top of the fixed frame through a rotating shaft.

[0029] At the bottom end of one side of the chain, an L-shaped link with ears is installed. The link with ears is connected to the chain fixing plate by bolts. The rear of the chain fixing plate is locked to the L-shaped clamping plate by bolts. The lower end of the clamping plate is fixedly connected to the moving side plate of the grinding assembly.

[0030] A slide rail is provided on one side of the fixed frame facing the moving side plate, and a first slider matching it is provided on the moving side plate.

[0031] An accordion cover is further provided between the clamping plate and the grinding assembly. The accordion cover is arranged in a "冂" shape facing the fixed frame. During lifting, the two ends of the accordion cover overlap on the front and rear sides of the fixed frame.

[0032] Preferably, the first guide groove and the second guide groove are stacked in space to form a "person" - shaped different - plane structure.

[0033] Preferably, the driving sprocket and the driven sprocket are respectively installed on the fixed frame through rotating shafts. The driven sprocket is installed at the top of the fixed frame by hanging through a rotating shaft, and the driving sprocket is installed at the bottom of the fixed frame by hanging through a rotating shaft and is connected to the output end of the lifting motor.

[0034] Preferably, the range is marked numerically. According to actual processing, the distance that the sliding head moves towards the range can be made equal to the distance that the first push plate and the second push plate expand outwards, which is convenient for better and more intuitive control.

[0035] Preferably, the screw rod and the second slider are in threaded fit. The moving column is inserted and fixed at the top of the second slider. The width of the screw rod placement groove matches the second slider and limits the second slider in the horizontal direction. During movement, the top of the second slider presses against the bottom of the second moving plate and is limited in the vertical direction by the screw rod placement groove and the second moving plate.

[0036] (3) Beneficial effects

[0037] This invention replaces the existing PE butt welding machine with a PE butt welding machine with a grinding structure, reducing the requirements for the rubber pre-cutting angle and cross-sectional quality, and reducing defective products caused by angle and cross-sectional quality problems due to pre-cutting. This improves the pre-cutting processing speed, and at the same time, greatly improves the stability and yield of the bonded products, thus greatly enhancing the overall performance and quality of the products and optimizing the quality of the final product.

[0038] Specifically, this utility model has the following effects:

[0039] 1. By driving the dual saw blades synchronously with a single motor, the rubber strips on both sides of the positioning and fine-tuning component can be polished simultaneously, which significantly improves processing efficiency, achieves the effect of pre-polishing, facilitates the effective alignment of the rubber strips on both sides, improves the end face quality of the rubber strips on both sides, and reduces defective products caused by angle and cross-sectional quality problems during pre-cutting.

[0040] 2. The positioning and fine-tuning component is designed with a double push plate. The screw drives the inclined guide grooves of the first and second moving plates to achieve parallel movement of the first and second push plates and synchronous expansion or retraction. This ensures that the inner ends of the rubber strips on both sides are evenly pressed together, adapting to workpieces of different sizes and achieving effective positioning and fine-tuning.

[0041] 3. The range plate and the sliding head baffle work together to enable visual adjustment of the range, improve fine-tuning accuracy, and reduce manual trial and error;

[0042] 4. The chain drive combined with the bellows cover protection can achieve smooth lifting and prevent debris from entering, thus extending the equipment's lifespan. In addition, the integrated design of the protective cover and the dust extraction pipe facilitates real-time collection of debris, improving the working environment.

[0043] 5. By placing the pulleys inside the mobile frame, the pulley assembly is compactly arranged, reducing space occupation. The directional air blowing setting of the blade edge can achieve directional cleaning of the surface of the saw blade, reducing the frequency of downtime maintenance and extending the service life of the equipment. Attached Figure Description

[0044] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0045] Figure 2 for Figure 1 A schematic diagram of the back structure;

[0046] Figure 3 for Figure 1 Internal structure diagram;

[0047] Figure 4 for Figure 2Internal structure diagram;

[0048] Figure 5 for Figure 3 Another structural diagram from a different perspective;

[0049] Figure 6 for Figure 5 Side view;

[0050] Figure 7 for Figure 1 Top view;

[0051] Figure 8 A structural breakdown diagram of the positioning fine-tuning component;

[0052] Figure 9 A top-down view showing the structural breakdown of the positioning fine-tuning components;

[0053] Figure 10 A schematic diagram of the overall structure after adding a baffle to the positioning fine-tuning component.

[0054] Figure label:

[0055] Grinding assembly (1), grinding motor (11), pulley (12), belt (13), first grinding saw blade (14), second grinding saw blade (15), moving frame (16), moving side plate (161), first slider (162), pressure plate (17).

[0056] Positioning fine-tuning component (2), first push plate (21), second push plate (22), screw (23), second slider (231), knife edge (24), mounting plate (25), first moving plate (26), first guide groove (261), lower step (262), first insert block (263), second moving plate (27), second guide groove (271), upper step (272), second insert block (273), range plate (28), moving groove (281), range (282), mounting seat (29), pressure block (291), screw placement groove (292), moving plate placement groove (293);

[0057] Lifting drive assembly (3), lifting motor (31), chain (32), chain fixing plate (33), clamping plate (34), bellows cover (35), slide rail (36), fixing frame (37);

[0058] Protective cover (4), dust extraction pipe (41). Detailed Implementation

[0059] The present invention will be further described in conjunction with the accompanying drawings and embodiments.

[0060] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "vertical", "horizontal", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0061] Example 1

[0062] like Figure 1-10 As shown, this utility model provides a first embodiment of a grinding mechanism for a PE rubber strip welding machine, including a grinding component 1, a positioning fine-adjustment component 2 fixedly connected to the top of the grinding component 1, and the grinding component 1 being driven to rise and fall by a lifting drive component 3.

[0063] The grinding assembly 1 includes a first grinding saw blade 14 and a second grinding saw blade 15 that are synchronously driven by a grinding motor 11. After the first grinding saw blade 14 and the second grinding saw blade 15 rise, they synchronously grind the rubber strips on both sides of the positioning fine-tuning assembly 2.

[0064] The grinding assembly 1 includes a movable frame 16, with a grinding motor 11 mounted at the bottom of the movable frame 16. A pulley 12 is mounted on the output end of the grinding motor 11. A first grinding saw blade 14 and a second grinding saw blade 15 are coaxially mounted on the movable frame 16. A pulley is also mounted on the coaxial connection between the first grinding saw blade 14 and the second grinding saw blade 15. This pulley is connected to the pulley 12 at the output end of the grinding motor 11 via a belt 13. For added safety, pressure plates 17 are added to the outer sides of the first grinding saw blade 14 and the second grinding saw blade 15. A movable side plate 161 is provided on the side of the movable frame 16 facing the lifting drive assembly 3. The movable side plate 161 is provided with a first slider 162 that matches the lifting drive assembly 3. During the grinding process, additional debris is generated. Therefore, in order to facilitate effective collection, protective covers 4 are provided on both outward sides of the movable frame 16. The top of the protective cover 4 is open and the bottom is sealed. The bottom of the protective cover 4 is connected to a dust extraction pipe 41. The dust extraction pipe 41 is connected to the dust extraction mechanism in the prior art to facilitate dust extraction and reduce the accumulation and splashing of debris. In order to effectively reduce the splashing of debris, the protective covers 4 on both sides are respectively located on the outside of the pressure plate of the first grinding saw blade 14 and the outside of the pressure plate of the second grinding saw blade 15.

[0065] The positioning fine-tuning component 2 includes a first push plate 21 and a second push plate 22. The first push plate 21 and the second push plate 22 are parallel to each other and move inward or outward synchronously. After adjustment, the first push plate 21 and the second push plate 22 respectively abut against the inner ends of the rubber strips on both sides. The positioning fine-tuning component 2 also includes a mounting plate 25, which is reinforced on the top of the movable frame 16 of the grinding component 1. A mounting seat 29 is installed above the mounting plate 25. The mounting seat 29 includes a screw placement groove 292, in which a screw 23 is assembled. The front end of the screw 23 passes through the pressure block 2 at the front end of the mounting seat 29. 91 Limit; After assembly, by rotating screw 23, the first push plate 21 and the second push plate 22 move inward or outward synchronously; Specifically: the mounting base 29 is provided with a first moving plate 26 that cooperates with the first push plate 21 and a second moving plate 27 that cooperates with the second push plate 22. The first moving plate 26 and the second moving plate 27 are stacked on top of each other and move in the moving plate placement groove 293 of the mounting base 29. The middle part of the first moving plate 26 is provided with a first guide groove 261 that is inclined towards the second push plate 22. The side of the first moving plate 26 facing the first push plate 21 is provided with a lower step 262. The second moving plate 26... The middle of the second movable plate 27 is provided with a second guide groove 271 inclined towards the first push plate 21. The side of the second movable plate 27 facing the second push plate 22 is provided with an upper step 272. The first movable plate 26 is pressed onto the second movable plate 27. The thickness of the first movable plate 26 and the second movable plate 27 is the same. The screw 23 is provided with a second slider 231 that moves along the screw 23. The second slider 231 is adapted to be installed in the screw placement groove 292. The second slider 231 is vertically provided with a moving column facing upward. The moving column is set upward and passes through both the second guide groove 271 and the first guide groove 261. When not in use, the first movable plate The side of the first moving plate 26 away from the lower step 262 abuts against the upper step 272, and the side of the second moving plate 27 away from the upper step 272 abuts against the lower step 262. It should be noted that the first push plate 21 and the first moving plate 26 are connected by a plug-in connection, and the second push plate 22 and the second moving plate 27 are also connected by a plug-in connection. Therefore, the first moving plate 26 facing the first push plate 21 has a first plug 263 installed on it, and the second moving plate 27 facing the second push plate 22 has a second plug 273 installed on it. Of course, the method listed in this solution can be equivalently replaced by other methods such as snap-fit ​​or threaded connection in the prior art.In order to more intuitively obtain the distance between the first push plate 21 and the second push plate 22 during the movement, during processing, the distance between the two push plates facing outward is made into the movement distance of the second slider 231 according to a ratio of 1:1, making it more visual. A sliding head is sleeved on the top of the moving column, and the sliding head moves on the range plate 28 on the top of the mounting seat 29. For this reason, a moving groove 281 matching the moving direction of the moving column is provided in the middle of the range plate 28, and a range 282 is provided outside the moving groove 281. In order to reduce dust falling into the moving groove when not in use, see; Figure 10 A retaining piece is sleeved in the middle of the sliding head. The length of the retaining piece is greater than the length of the marked range 282. The retaining piece covers and moves on the range plate 28. In order to guide the debris to be concentrated and blown into the interior of the protective cover 4, a downwardly inclined lower pressing plate is provided at the bottom of the mounting seat 29. A cutting edge 24 is threadedly installed on the lower pressing plate. The air flow directions of the cutting edge 24 are respectively towards the directions of the first grinding saw blade 14 and the second grinding saw blade 15. When the grinding is completed, when the cutting edge moves downward, the cutting edge 24 opens, blowing the debris on the polished rubber strip into the protective cover 4, and then discharging the debris outward through the dust extraction pipe 41. It should be noted that in addition to ensuring that the first grinding saw blade 14 and the second grinding saw blade 15 will not fly out under special circumstances, the bottom of the protective cover 4 can also play a role in dust collection;

[0066] The lifting drive component 3 includes a fixed frame 37 installed on one side of the grinding component 1. A chain 32 is provided inside the frame of the fixed frame 37. The two ends of the chain 32 are respectively sleeved on the driving sprocket and the driven sprocket. The driving sprocket is fixed in position through a rotating shaft at the bottom. The driving sprocket is connected to the output end of the lifting motor 31. The driven sprocket is installed at the top of the fixed frame 37 through a rotating shaft. In order to achieve the effect of driving the moving frame 16, an L-shaped link with an ear is installed at the bottom end of one side of the chain 32. The link with an ear is connected to the chain fixing plate 33 through a bolt. The rear of the chain fixing plate 33 is locked with an L-shaped clamping plate 34 through a bolt. The lower end of the clamping plate 34 is fixedly connected to the moving side plate 161 of the grinding component 1. A slide rail 36 is provided on one side of the fixed frame 37 facing the moving side plate 161. A first slider 162 matching it is provided on the moving side plate 161 to facilitate matching sliding. An accordion cover 35 is further provided between the clamping plate 34 and the grinding component 1. The accordion cover 35 is arranged in a "冂" shape facing the direction of the fixed frame 37; during lifting, the two ends of the accordion cover 35 overlap on the front and rear sides of the fixed frame 37. By setting the accordion cover 35, the protection effect is enhanced, and it is possible to avoid debris intrusion during the lifting process and extend the service life of the equipment.

[0067] Working principle:

[0068] In use, this invention operates the positioning fine-tuning component by pre-grinding the rubber strips to the required length. Before operation, two rubber strips are placed on either side of the first and second push plates, respectively. After adjusting to the required length, the first and second push plates abut against the inner sides of the two rubber strips. The adjustment dimensions for each batch of rubber strips are different, and only one adjustment is needed per batch. Specifically, the distance the screw rotates and drives the slider to move is converted into the distance the first and second push plates move outward or inward. Specifically: rotating the screw causes the second slider, which is threaded onto the screw, to move. The movement of the second slider drives the moving column along the first guide groove. Simultaneously sliding within the second guide groove, the first and second moving plates are pushed outwards in opposite directions. It should be noted that at this time, the sliding head connected to the moving column moves along the range line on the range plate, allowing the operator to clearly observe the distance the first and second push plates move outwards. This drives the first and second push plates to expand or contract in parallel, and the adjustment range can be intuitively judged through the range scale. After adjustment, the rubber strips on both sides are fixed to the outside of the two push plates by a fixing device. It should be noted that the structure for fixing the rubber strips is not shown in the figure because it is not an improvement point of this solution. Existing structures that can fix the rubber strips can be used.

[0069] Turn on the grinding motor to achieve synchronous processing on both sides. The grinding motor drives the pulley, and the pulley is connected to another pulley (coaxial) by a belt, which in turn drives the first and second grinding saw blades to rotate. During this process, the grinding motor drives the two saw blades to rotate at high speed through the belt, and the pressure plate reinforces the stability of the saw blades.

[0070] Turn on the lifting motor, and the chain driven by the lifting motor will move the chain fixing plate, clamping plate and moving side plate (i.e. moving frame) upward along the slide rail, so that the first grinding saw blade and the second grinding saw blade rise to the preset height, contact the rubber strip and perform grinding;

[0071] During the grinding process, the protective cover and the moving frame move together, so the protective cover can effectively collect dust and debris. As the moving frame descends, the airflow direction of the blade is downward along the grinding direction. The directional blowing helps to clean the debris on the surface of the saw blade and effectively blows the debris into the dust cover. Finally, the debris is extracted from the bottom through the dust extraction pipe, which facilitates the centralized treatment of debris and dust and reduces pollution of the factory environment.

[0072] The above embodiments only illustrate preferred embodiments of the present invention, and their descriptions are relatively specific and detailed. However, the present invention is not limited to these embodiments. It should be noted that for those skilled in the art, any modifications made without departing from the spirit of the present invention fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A grinding mechanism for a PE rubber strip welding machine, characterized in that: It includes a grinding component (1), and a positioning fine-tuning component (2) is fixedly connected to the top of the grinding component (1). The grinding component (1) is driven to rise and fall by a lifting drive component (3). The grinding assembly (1) includes a first grinding saw blade (14) and a second grinding saw blade (15) driven synchronously by a grinding motor (11). After the first grinding saw blade (14) and the second grinding saw blade (15) rise, they synchronously grind the rubber strips on both sides of the positioning fine adjustment assembly (2). The positioning fine-tuning component (2) includes a first push plate (21) and a second push plate (22). The first push plate (21) and the second push plate (22) move in parallel to each other and move inward or outward synchronously. After adjustment, the first push plate (21) and the second push plate (22) abut against the inner ends of the rubber strips on both sides in parallel.

2. The grinding mechanism for a PE rubber strip welding machine according to claim 1, characterized in that: The polishing assembly (1) includes a movable frame (16), a polishing motor (11) is installed at the bottom of the movable frame (16), and a pulley (12) is installed at the output end of the polishing motor (11). The first grinding saw blade (14) and the second grinding saw blade (15) are coaxially mounted on the movable frame (16). A pulley is also mounted on the coaxial connection between the first grinding saw blade (14) and the second grinding saw blade (15). The pulley is connected to the pulley (12) at the output end of the grinding motor (11) via a belt (13).

3. The grinding mechanism for a PE rubber strip welding machine according to claim 2, characterized in that: The outer sides of the first grinding saw blade (14) and the second grinding saw blade (15) are reinforced with pressure plates (17); The movable frame (16) has a movable side plate (161) on the side facing the lifting drive assembly (3), and the movable side plate (161) has a first slider (162) that matches the lifting drive assembly (3).

4. The grinding mechanism for a PE rubber strip welding machine according to claim 3, characterized in that: The mobile frame (16) is provided with protective covers (4) on both outward sides. The top of the protective cover (4) is open and the bottom is sealed. The bottom of the protective cover (4) is connected to a dust extraction pipe (41). The protective covers (4) on both sides are respectively located on the outside of the pressure plate of the first grinding saw blade (14) and the outside of the pressure plate of the second grinding saw blade (15).

5. A grinding mechanism for a PE rubber strip welding machine according to any one of claims 1-4, characterized in that: The positioning fine-tuning component (2) includes a mounting plate (25), which is reinforced on the top of the movable frame (16) of the grinding component (1); A mounting base (29) is installed above the mounting plate (25). The mounting base (29) includes a screw placement groove (292). A screw (23) is assembled in the screw placement groove (292). The front end of the screw (23) is limited by the pressure block (291) at the front end of the mounting base (29). After assembly, by rotating the screw (23), the first push plate (21) and the second push plate (22) move inward or outward in sync.

6. The grinding mechanism for a PE rubber strip welding machine according to claim 5, characterized in that: The mounting base (29) is provided with a first movable plate (26) that cooperates with the first push plate (21) and a second movable plate (27) that cooperates with the second push plate (22). The first movable plate (26) and the second movable plate (27) are stacked on top of each other and move in the movable plate placement slot (293) of the mounting base (29). The first movable plate (26) has a first guide groove (261) in the middle that is inclined toward the second push plate (22), and the first movable plate (26) has a lower step (262) on the side facing the first push plate (21). The second movable plate (27) has a second guide groove (271) in the middle that is inclined toward the first push plate (21), and the second movable plate (27) has an upper step (272) on the side facing the second push plate (22); The first movable plate (26) is pressed onto the second movable plate (27), and the first movable plate (26) and the second movable plate (27) have the same thickness; The screw (23) is provided with a second slider (231) that moves along the screw (23). The second slider (231) is adapted to be installed in the screw placement groove (292). The second slider (231) is provided with a vertical moving column facing upward. The moving column is set upward and passes through the second guide groove (271) and the first guide groove (261) at the same time. When not in use, the side of the first movable plate (26) away from the lower step (262) rests against the upper step (272), and the side of the second movable plate (27) away from the upper step (272) rests against the lower step (262).

7. The grinding mechanism for a PE rubber strip welding machine according to claim 6, characterized in that: The first movable plate (26) has a first insert (263) mounted on the side facing the first push plate (21), and the second movable plate (27) has a second insert (273) mounted on the side facing the second push plate (22).

8. The grinding mechanism for a PE rubber strip welding machine according to claim 7, characterized in that: The top of the moving column is fitted with a sliding head, which moves on the range plate (28) on the top of the mounting base (29). The middle part of the range plate (28) is provided with a moving groove (281) that matches the moving direction of the moving column, and the outer side of the moving groove (281) is provided with a range (282). A baffle is fitted in the middle of the sliding head. The length of the baffle is greater than the length of the marked range (282). The baffle covers the range plate (28) and moves.

9. A grinding mechanism for a PE rubber strip welding machine according to claim 8, characterized in that: The bottom of the mounting base (29) is provided with a downwardly inclined pressure plate, and a blade (24) is threadedly installed on the pressure plate. The airflow direction of the blade (24) is respectively towards the first grinding saw blade (14) and the second grinding saw blade (15).

10. A grinding mechanism for a PE rubber strip welding machine according to claim 9, characterized in that: The lifting drive assembly (3) includes a fixed frame (37) installed on one side of the grinding assembly (1). The inner side of the frame of the fixed frame (37) is provided with a chain (32). The two ends of the chain (32) are respectively sleeved on the driving sprocket and the driven sprocket. The driving sprocket is connected to the output end of the lifting motor (31). The driven sprocket is installed on the top of the fixed frame (37) through a rotating shaft. An L-shaped lug-type outer link is installed at the bottom end of the chain (32) on one side. The lug-type outer link is connected to the chain fixing plate (33) by bolts. The rear of the chain fixing plate (33) is locked to the L-shaped clamping plate (34) by bolts. The lower end of the clamping plate (34) is fixed to the movable side plate (161) of the grinding assembly (1). One side of the fixing frame (37) facing the moving side plate (161) is provided with a slide rail (36), and a first slider (162) matching with it is arranged on the moving side plate (161); An accordion cover (35) is further arranged between the clamping plate (34) and the grinding assembly (1). The accordion cover (35) is arranged in a "冂" shape facing the fixing frame (37). When lifting, both ends of the accordion cover (35) are lapped on the front and back sides of the fixing frame (37).

Images