Melamine formaldehyde resin slicing machine

By introducing a conveyor belt and vacuum cleaner into a melamine formaldehyde resin slicer, the problem of difficulty in removing impurities on the surface of the resin in the prior art is solved, and the slice quality is significantly improved.

CN222609797UActive Publication Date: 2025-03-14SICHUAN BAOSHUNXIN BIOTECHNOLOGY CO LTD
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Patent Information

Application Number
CN202420600125.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-03-26
Publication Date
2025-03-14
Estimated Expiration
2034-03-26

AI Technical Summary

Technical Problem

The existing melamine formaldehyde resin slicers are difficult to effectively remove impurities on the resin surface during pretreatment, affecting the quality of the slice.

Method used

A slicer including a conveyor belt, a vacuum shell, a vacuum tube and a vacuum cleaner is designed to transport the resin through the conveyor belt and remove impurities from the resin surface using a vacuum cleaner system.

Benefits of technology

Effectively remove impurities from the resin surface, improving the slice quality and equipment pretreatment effect.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model belongs to the technical field of chemical machinery, and particularly relates to a melamine formaldehyde resin slicing machine which comprises a first supporting leg. A plurality of groups of first supporting legs are arranged; a conveyor belt is arranged between every two groups of first supporting legs; a first baffle is fixedly connected to the side wall of the first supporting leg. A through hole is formed in the middle of the first baffle; the inner side wall of the first baffle through hole is fixedly connected with a dust suction shell. A dust suction pipe penetrates through the side wall of the dust suction shell. The output end of the dust suction pipe is connected with the input end of the dust suction machine; melamine-formaldehyde resin to be slit conveyed at the top of the conveying belt can be subjected to dust collection pretreatment through a dust collection shell, a dust collection pipe and a dust collector, impurities attached to the surface of the melamine-formaldehyde resin are removed, and due to the fact that a placement plate is arranged below the conveying belt, the melamine-formaldehyde resin at the tail end of the conveying belt can be received; and the slicing machine pretreatment effect of the melamino-formaldehyde resin is further enhanced.
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Description

Technical Field

[0001] The utility model belongs to the technical field of chemical machinery, in particular to a melamine formaldehyde resin slicer. Background Art

[0002] Melamine formaldehyde resin, also known as melamine formaldehyde resin or melamine resin, is an important triazine ring compound. It is a product synthesized by the addition reaction of melamine and formaldehyde and then dehydration and condensation. It is widely used in the field of artificial boards because of its excellent water resistance, aging resistance, flame retardancy, heat resistance, chemical corrosion resistance and insulation properties.

[0003] In the prior art, when using melamine formaldehyde resin, it needs to be cut into slices for the subsequent use of artificial boards. At this time, a melamine formaldehyde resin slicer is needed.

[0004] During long-term use and observation, it is found that the existing melamine formaldehyde resin slicer has a relatively simple pretreatment before slicing, and is not good at processing impurities adhering to the surface of the melamine formaldehyde resin, which affects the slicing quality of the melamine formaldehyde resin.

[0005] To this end, the utility model provides a slicing machine for melamine formaldehyde resin. Utility Model Content

[0006] In order to make up for the deficiencies of the prior art and solve at least one problem raised in the background technology, a slicing machine for melamine formaldehyde resin is proposed.

[0007] The technical solution adopted by the utility model to solve its technical problems is: a melamine formaldehyde resin slicer described in the utility model comprises a first supporting leg; the first supporting leg is provided with a plurality of groups; a conveyor belt is provided in the middle of every two groups of first supporting legs; a first baffle is fixedly connected to the side wall of the first supporting leg; a through hole is provided in the middle of the first baffle; a dust collection shell is fixedly connected to the inner side wall of the through hole of the first baffle; a dust collection pipe passes through the side wall of the dust collection shell; the output end of the dust collection pipe is connected to the input end of a dust collector; a dust collector is fixedly connected to the side wall of the first supporting leg; a second supporting leg is provided along the direction of the first supporting leg; the second supporting leg is provided with a plurality of groups; the second A placing plate is fixedly connected to the top of the supporting leg; the placing plate is arranged below the conveyor belt; in this step, the melamine formaldehyde resin can be conveyed by the arrangement of the conveyor belt, and the melamine formaldehyde resin transported on the top of the conveyor belt can be prevented from deflecting by the arrangement of the first baffle plate. The melamine formaldehyde resin transported on the top of the conveyor belt waiting to be cut can be pre-treated by dust collection through the dust collection shell, the dust collection pipe and the dust collector, and impurities adhered to the surface of the melamine formaldehyde resin can be removed. Because the placing plate is arranged below the conveyor belt, the melamine formaldehyde resin at the end of the conveyor belt can be received, thereby further enhancing the slicer pretreatment effect of the melamine formaldehyde resin.

[0008] Preferably, a second baffle is fixedly connected to the top of the placement plate; a first electric push rod is fixedly connected to the side wall of the second baffle; a push plate is connected to the output end of the first electric push rod; a telescopic baffle is fixedly connected to the side wall of the push plate; a third support leg is arranged along the direction of the second support leg; a plurality of groups of the third support legs are arranged; the top of the third support leg is fixedly connected to the cutting box shell; the end of the telescopic baffle is fixedly connected to a sliding rod; the sliding rods are evenly distributed at the end of the telescopic baffle; each group of the sliding rods passes through the middle of the side wall of the cutting box shell; the sliding rod and the side wall of the cutting box shell are slidably matched; the side wall of the end of the sliding rod is fixedly connected to a limiting block; a sliding groove is provided in the middle of the placement plate; the side wall of the cutting box shell is slidably matched with a sliding plate; The telescopic baffle and the side walls of the limit block are fixedly connected to the sliding plate with a fixed rod; in this step, the melamine formaldehyde resin transported to the top of the placement plate by the conveyor belt can be intercepted by the setting of the push plate and the telescopic baffle, and the melamine formaldehyde resin can be pushed by the setting of the second baffle and the first electric push rod, and the sliding plate can be erected and the telescopic baffle can be moved synchronously by the setting of the fixed rod, so that the melamine formaldehyde resin entering the inner shell of the cutting box can be received by the sliding plate for subsequent cutting, and the second baffle and the telescopic baffle can be reset when the first electric push rod is retracted by the sliding rod and the limit block, thereby further enhancing the pushing stability effect of the slicing machine of the melamine formaldehyde resin.

[0009] Preferably, a slide frame is fixedly connected to the inner side wall of the cutting box shell; a second electric push rod is slidably fitted in the middle of the slide frame; a cutting knife is installed at the end of the second electric push rod; in this step, the height of the cutting knife can be adjusted through the setting of the second electric push rod, so as to cut the melamine formaldehyde resin placed on the top of the sliding plate, thereby further enhancing the portability of cutting the melamine formaldehyde resin.

[0010] Preferably, a storage box is fixedly connected to the side wall of the slitting box shell; a water pump is fixedly connected to the side wall of the storage box; the water pumps are evenly distributed on the side wall of the storage box; a delivery pipe is connected to the output end of each group of the water pumps; the delivery pipe passes through the side wall of the slitting box shell; in this step, the cleaning liquid inside the storage box can be driven by the setting of the water pump to flush the slitting knife through the delivery pipe, thereby further enhancing the flushing effect of the melamine formaldehyde resin.

[0011] Preferably, a dust cover is fixedly connected to the side wall of the slitting box shell; the dust cover is evenly distributed on the side wall of the slitting box shell; a motor is fixedly connected to the inner wall of each group of dust covers; a connecting rod is connected to the output end of the motor; fan blades are fixedly connected to the side wall of the connecting rod; the fan blades are evenly distributed on the side wall of the connecting rod; in this step, the fan blades can be rotated by the setting of the motor to generate air flow to dry the slitting knife, thereby further enhancing the drying effect of the melamine formaldehyde resin.

[0012] Preferably, a guide plate is fixedly connected to the inner side wall of the first electric push rod; the guide plates are evenly distributed on the inner side wall of the first electric push rod; this step can guide the cleaning liquid after flushing through the setting of the guide plate, further enhancing the guiding effect of the melamine formaldehyde resin.

[0013] The beneficial effects of the utility model are as follows:

[0014] 1. The utility model discloses a melamine formaldehyde resin slicer, which can convey melamine formaldehyde resin by means of a conveyor belt, and can prevent the melamine formaldehyde resin transported on the top of the conveyor belt from deflecting by means of a first baffle plate. The melamine formaldehyde resin transported on the top of the conveyor belt waiting for cutting can be pre-treated by dust collection by means of a dust collection shell, a dust collection pipe and a dust collector, and impurities adhering to the surface of the melamine formaldehyde resin can be removed. Because the placement plate is arranged below the conveyor belt, the melamine formaldehyde resin at the end of the conveyor belt can be received, and the pre-treatment effect of the melamine formaldehyde resin slicer is further enhanced.

[0015] 2. The utility model discloses a melamine formaldehyde resin slicer, which can intercept the melamine formaldehyde resin transported to the top of the placement plate by the conveyor belt through the setting of the push plate and the telescopic baffle plate, and can push the push plate to push the melamine formaldehyde resin through the setting of the second baffle plate and the first electric push rod, and can make the sliding plate stand up and the telescopic baffle plate move synchronously through the setting of the fixed rod, so that the melamine formaldehyde resin entering the inner shell of the cutting box can be received by the sliding plate for subsequent cutting, and can reset the second baffle plate and the telescopic baffle plate when the first electric push rod is retracted through the sliding rod and the limit block, thereby further enhancing the pushing stability effect of the melamine formaldehyde resin slicer. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model will be further described below in conjunction with the accompanying drawings.

[0017] Figure 1 It is a stereogram in the utility model;

[0018] Figure 2 It is a side view of the utility model;

[0019] Figure 3 It is a cross-sectional view of the outer shell of the slitting box in the utility model;

[0020] Figure 4 It is a schematic diagram of the internal structure of the dust cover in the utility model;

[0021] Legend:

[0022] 1. First supporting leg; 11. Conveyor belt; 12. First baffle; 13. Dust shell; 14. Dust pipe; 15. Vacuum cleaner; 16. Second supporting leg; 17. Placement plate; 2. Second baffle; 21. First electric push rod; 22. Push plate; 23. Telescopic baffle; 24. Cutting box shell; 25. Slide rod; 26. Limit block; 27. Slide groove; 28. Sliding plate; 29. ​​Fixed rod; 201. Third supporting leg; 3. Slide rack; 31. Second electric push rod; 32. Cutting knife; 4. Saving box; 41. Water pump; 42. Delivery pipe; 5. Dust cover; 51. Motor; 52. Connecting rod; 53. Fan blade; 6. Guide plate; 7. Filter plate. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Specific examples are given below.

[0025] like Figure 1 to Figure 2 As shown, a melamine formaldehyde resin slicer described in an embodiment of the utility model comprises a first support leg 1; the first support leg 1 is provided with a plurality of groups; a conveyor belt 11 is provided in the middle of every two groups of first support legs 1; a first baffle 12 is fixedly connected to the side wall of the first support leg 1; a through hole is provided in the middle of the first baffle 12; a dust collection shell 13 is fixedly connected to the inner side wall of the through hole of the first baffle 12; a dust collection pipe 14 passes through the side wall of the dust collection shell 13; the output end of the dust collection pipe 14 is connected to the input end of a dust collector 15; a dust collector 15 is fixedly connected to the side wall of the first support leg 1; a second support leg 16 is provided along the direction of the first support leg 1; the second support leg 16 is provided with a plurality of groups; a placement plate 17 is fixedly connected to the top of the second support leg 16; the placement plate 17 is provided below the conveyor belt 11; when working, the melamine formaldehyde resin can be conveyed by the conveyor belt 11, and the melamine formaldehyde resin transported on the top of the conveyor belt 11 can be prevented from deflecting by the first baffle 12 The melamine formaldehyde resin transported on the top of the conveyor belt 11 waiting for cutting can be pre-treated by dust suction through the dust suction shell 13, the dust suction pipe 14 and the dust collector 15, and the impurities adhering to the surface of the melamine formaldehyde resin can be removed. Because the placement plate 17 is arranged below the conveyor belt 11, the melamine formaldehyde resin at the end of the conveyor belt 11 can be received. In this step, the melamine formaldehyde resin can be transported by the arrangement of the conveyor belt 11, and the melamine formaldehyde resin transported on the top of the conveyor belt 11 can be prevented from deflecting through the arrangement of the first baffle plate 12. The melamine formaldehyde resin transported on the top of the conveyor belt 11 waiting for cutting can be pre-treated by dust suction through the dust suction shell 13, the dust suction pipe 14 and the dust collector 15, and the impurities adhering to the surface of the melamine formaldehyde resin can be removed. Because the placement plate 17 is arranged below the conveyor belt 11, the melamine formaldehyde resin at the end of the conveyor belt 11 can be received, which further enhances the pre-treatment effect of the slicer of the melamine formaldehyde resin.

[0026] Further, such as Figures 1 to 3As shown, the top of the placing plate 17 is fixedly connected to a second baffle plate 2; the side wall of the second baffle plate 2 is fixedly connected to a first electric push rod 21; the output end of the first electric push rod 21 is connected to a push plate 22; the side wall of the push plate 22 is fixedly connected to a telescopic baffle plate 23; a third support leg 201 is arranged along the direction of the second support leg 16; the third support leg 201 is provided with multiple groups; the top of the third support leg 201 is fixedly connected to a cutting box shell 24; the end of the telescopic baffle plate 23 is fixedly connected to a slide rod 25; the slide rods 25 are evenly distributed at the end of the telescopic baffle plate 23; each group of the slide rods 25 is connected from The middle of the side wall of the cutting box shell 24 passes through; the sliding rod 25 and the side wall of the cutting box shell 24 are slidably matched; the side wall of the end of the sliding rod 25 is fixedly connected to the limit block 26; the middle of the placement plate 17 is provided with a slide groove 27; the side wall of the cutting box shell 24 is slidably matched with a sliding plate 28; the telescopic baffle 23 and the side wall of the limit block 26 and the sliding plate 28 are all fixedly connected with a fixing rod 29; when working, the melamine formaldehyde resin transported to the top of the placement plate 17 by the conveyor belt 11 can be intercepted by the push plate 22 and the telescopic baffle 23, and the second baffle 2 and the first electric push rod The push plate 21 can push the push plate 22 to push the melamine formaldehyde resin, and the fixed rod 29 can make the sliding plate 28 stand up and move the telescopic baffle 23 synchronously, so that the melamine formaldehyde resin entering the inner part of the cutting box shell 24 can be received by the sliding plate 28 for subsequent cutting, and the second baffle 2 and the telescopic baffle 23 can be reset when the first electric push rod 21 is retracted through the sliding rod 25 and the limit block 26; in this step, the melamine formaldehyde resin transported to the top of the placement plate 17 by the conveyor belt 11 can be cut. Interception, through the setting of the second baffle 2 and the first electric push rod 21, the push plate 22 can be pushed to push the melamine formaldehyde resin, and through the setting of the fixed rod 29, the sliding plate 28 can be erected and the telescopic baffle 23 can be moved synchronously, so that the melamine formaldehyde resin entering the inside of the cutting box shell 24 can be received by the sliding plate 28 for subsequent cutting, and the second baffle 2 and the telescopic baffle 23 can be reset when the first electric push rod 21 is retracted through the sliding rod 25 and the limit block 26, further enhancing the pushing stability effect of the slicing machine of melamine formaldehyde resin.

[0027] Further, such as Figures 1 to 3 As shown, the inner wall of the cutting box shell 24 is fixedly connected to a slide frame 3; a second electric push rod 31 is slidably matched in the middle of the slide frame 3; a cutting knife 32 is installed at the end of the second electric push rod 31; when working, the second electric push rod 31 can adjust the depth of the cutting knife 32 to cut the melamine formaldehyde resin placed on the top of the sliding plate 28; in this step, the height of the cutting knife 32 can be adjusted by the setting of the second electric push rod 31, so as to cut the melamine formaldehyde resin placed on the top of the sliding plate 28, thereby further enhancing the portability of cutting the melamine formaldehyde resin.

[0028] Further, such as Figures 1 to 3 As shown, the side wall of the slitting box shell 24 is fixedly connected to a storage box 4; the side wall of the storage box 4 is fixedly connected to a water pump 41; the water pumps 41 are evenly distributed on the side wall of the storage box 4; the output end of each group of the water pumps 41 is connected to a delivery pipe 42; the delivery pipe 42 passes through the side wall of the slitting box shell 24; when working, in a non-working state, the water pump 41 can drive the cleaning liquid inside the storage box 4 to use the delivery pipe 42 to flush the impurities adhered to the slitting knife 32; this step can drive the cleaning liquid inside the storage box 4 to use the delivery pipe 42 to flush the slitting knife 32 through the setting of the water pump 41, thereby further enhancing the flushing effect of the melamine formaldehyde resin.

[0029] Further, such as Figures 1 to 4 As shown, the side wall of the slitting box shell 24 is fixedly connected with a dust cover 5; the dust cover 5 is evenly distributed on the side wall of the slitting box shell 24; the inner wall of each group of dust covers 5 is fixedly connected with a motor 51; the output end of the motor 51 is connected with a connecting rod 52; the side wall of the connecting rod 52 is fixedly connected with a fan blade 53; the fan blade 53 is evenly distributed on the side wall of the connecting rod 52; when working, the motor 51 can rotate the connecting rod 52 and then drive the fan blade 53 to generate air flow, so that the slitting knife 32 is dried, and the dust cover 5 can reduce the entry of external impurities into the air flow; this step can rotate the fan blade 53 to generate air flow to dry the slitting knife 32 through the setting of the motor 51, thereby further enhancing the drying effect of the melamine formaldehyde resin.

[0030] Further, such as Figure 3 As shown, a guide plate 6 is fixedly connected to the inner wall of the first electric push rod 21; the guide plates 6 are evenly distributed on the inner wall of the first electric push rod 21; during operation, the cleaning liquid after flushing can be guided by the guide plates 6 so that the cleaning liquid will not adhere to the side wall of the cutting box shell 24; this step can guide the cleaning liquid after flushing through the setting of the guide plates 6, further enhancing the guiding effect of the melamine formaldehyde resin.

[0031] Further, such as Figure 3 As shown, the inner wall of the cutting box shell 24 is provided with a filter plate 7; the filter plate 7 is arranged below the guide plate 6; when working, the cleaning liquid guided by the guide plate 6 can be filtered through the filter plate 7; this step can filter the cleaning liquid through the setting of the filter plate 7, further enhancing the filtering effect of the tricyanamide formaldehyde resin.

[0032] Working principle: During operation, the melamine formaldehyde resin can be conveyed by the conveyor belt 11, and the melamine formaldehyde resin transported on the top of the conveyor belt 11 can be prevented from deflecting by the first baffle plate 12. The melamine formaldehyde resin transported on the top of the conveyor belt 11 and waiting for cutting can be pre-treated by dust collection by the dust collection shell 13, the dust collection tube 14 and the dust collector 15, and impurities adhering to the surface of the melamine formaldehyde resin can be removed. Because the placement plate 17 is arranged under the conveyor belt 11, the melamine formaldehyde resin at the end of the conveyor belt 11 can be received, and the melamine formaldehyde resin transported by the conveyor belt 11 to the top of the placement plate 17 can be intercepted by the push plate 22 and the telescopic baffle plate 23, and the push plate 22 can be pushed by the second baffle plate 2 and the first electric push rod 21 to push the melamine formaldehyde resin, and the sliding plate 28 can be erected by the fixed rod 29 and the telescopic baffle plate 23 can be moved synchronously. The melamine formaldehyde resin that enters the slitting box shell 24 can be received by the sliding plate 28 for subsequent cutting. The sliding rod 25 and the limit block 26 can reset the second baffle 2 and the telescopic baffle 23 when the first electric push rod 21 is retracted. The second electric push rod 31 can cut the melamine formaldehyde resin placed on the top of the sliding plate 28 according to the depth of the slitting knife 32. In the non-working state, the cleaning liquid inside the storage box 4 can be driven by the water pump 41 to use the conveying pipe 42 to flush the impurities adhered to the slitting knife 32. The motor 51 can rotate the connecting rod 52 and then drive the fan blades 53 to generate air flow, so that the slitting knife 32 can be dried. The dust cover 5 can reduce the entry of external impurities into the air flow. The guide plate 6 can guide the flushed cleaning liquid so that the cleaning liquid will not adhere to the side wall of the slitting box shell 24.

[0033] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A melamine formaldehyde resin slicer, comprising a first support leg (1); characterized in that: The first supporting leg (1) is provided with a plurality of groups; a conveyor belt (11) is provided in the middle of every two groups of the first supporting legs (1); a first baffle (12) is fixedly connected to the side wall of the first supporting leg (1); a through hole is provided in the middle of the first baffle (12); a dust collection shell (13) is fixedly connected to the inner side wall of the through hole of the first baffle (12); a dust collection pipe (14) passes through the side wall of the dust collection shell (13); the output end of the dust collection pipe (14) is connected to the input end of a dust collector (15); a dust collector (15) is fixedly connected to the side wall of the first supporting leg (1); a second supporting leg (16) is provided along the direction of the first supporting leg (1); the second supporting leg (16) is provided with a plurality of groups; a placement plate (17) is fixedly connected to the top end of the second supporting leg (16); the placement plate (17) is provided below the conveyor belt (11).

2. The melamine formaldehyde resin slicer according to claim 1, characterized in that: The top of the placement plate (17) is fixedly connected to a second baffle plate (2); the side wall of the second baffle plate (2) is fixedly connected to a first electric push rod (21); the output end of the first electric push rod (21) is connected to a push plate (22); the side wall of the push plate (22) is fixedly connected to a telescopic baffle plate (23); a third support leg (201) is arranged along the direction of the second support leg (16); the third support leg (201) is provided with a plurality of groups; the top of the third support leg (201) is fixedly connected to a cutting box shell (24); the end of the telescopic baffle plate (23) is fixedly connected to a slide rod (25); The slide bars (25) are evenly distributed at the ends of the telescopic baffle (23); each group of the slide bars (25) passes through the middle of the side wall of the cutting box shell (24); the slide bars (25) and the side wall of the cutting box shell (24) are in sliding cooperation; the side wall at the end of the slide bar (25) is fixedly connected to a limiting block (26); a slide groove (27) is provided in the middle of the placement plate (17); the side wall of the cutting box shell (24) is in sliding cooperation with a sliding plate (28); the side walls of the telescopic baffle (23) and the limiting block (26) and the sliding plate (28) are all fixedly connected to a fixing rod (29).

3. A melamine formaldehyde resin slicer according to claim 2, characterized in that: The inner side wall of the cutting box housing (24) is fixedly connected with a slide frame (3); a second electric push rod (31) is slidably matched in the middle of the slide frame (3); and a cutting knife (32) is installed at the end of the second electric push rod (31).

4. The melamine formaldehyde resin slicer according to claim 3, characterized in that: The side wall of the slitting box housing (24) is fixedly connected to a storage box (4); the side wall of the storage box (4) is fixedly connected to a water pump (41); the water pumps (41) are evenly distributed on the side wall of the storage box (4); the output end of each group of the water pumps (41) is connected to a delivery pipe (42); the delivery pipe (42) passes through the side wall of the slitting box housing (24).

5. The melamine formaldehyde resin slicer according to claim 4, characterized in that: The side wall of the slitting box housing (24) is fixedly connected with a dust cover (5); the dust cover (5) is evenly distributed on the side wall of the slitting box housing (24); a motor (51) is fixedly connected to the inner side wall of each group of dust covers (5); a connecting rod (52) is connected to the output end of the motor (51); a fan blade (53) is fixedly connected to the side wall of the connecting rod (52); the fan blade (53) is evenly distributed on the side wall of the connecting rod (52).

6. The melamine formaldehyde resin slicer according to claim 5, characterized in that: A guide plate (6) is fixedly connected to the inner side wall of the first electric push rod (21); the guide plates (6) are evenly distributed on the inner side wall of the first electric push rod (21).