Flexible trimming knife

Abstract

The utility model relates to the technical field of trimming knives, and discloses a flexible trimming knife which comprises a knife sleeve, a buffering mechanism is movably installed in the knife sleeve, and one end of the buffering mechanism penetrates through the knife sleeve and is connected with a knife head. The cutter sleeve comprises a grip arranged outside the buffer mechanism in a sleeving mode, a plurality of evenly-distributed limiting sliding strips are fixedly connected to the interior of the grip, and the left end and the right end of each limiting sliding strip are connected with a guiding positioning ring and a positioning ring respectively; the buffering mechanism comprises a connecting sliding rod movably arranged in the middle of the cutter sleeve in a penetrating mode, an adjusting mechanism is arranged at the end, away from the cutter head, of the connecting sliding rod, and a positioning assembly is arranged at the end, close to the adjusting mechanism, of the interior of the connecting sliding rod. Due to the arrangement of the positioning assembly, under the limitation of the cutter sleeve, the situation that a workpiece is excessively damaged due to factors such as misoperation when the cutting edge is subjected to excessive resistance can be avoided; and potential safety hazards to operators can be effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of trimming knives, and more specifically, to a flexible trimming knife. Background Art

[0002] Many machined products have burrs, which greatly reduce product quality. Many large products are designed with special burr repair machines, but many small products are difficult to repair using burr repair machines. Manual operation is usually required. However, the strength and angle of manual operation are difficult to control, and the operation requirements are high, which increases the difficulty of processing. Once an operation error occurs, it will not only directly lead to damage to the product, but also pose certain safety hazards to the operator. Therefore, it needs to be improved. Utility Model Content

[0003] In order to overcome the deficiencies of the prior art, the utility model provides a flexible trimming knife.

[0004] To achieve the above object, the present invention provides the following technical solution: a flexible trimming knife, comprising a knife sleeve, wherein a buffer mechanism is movably installed inside the knife sleeve, and one end of the buffer mechanism passes through the knife sleeve and is connected to a knife head;

[0005] The knife sheath includes a handle sleeved on the outside of the buffer mechanism, the interior of the handle is fixedly connected to a plurality of evenly distributed limiting slides, and the left and right ends of the limiting slides are respectively connected to a guide positioning ring and a positioning ring;

[0006] The buffer mechanism includes a connecting slide rod movably arranged in the middle of the knife sleeve, an adjustment mechanism is provided at the end of the connecting slide rod away from the knife head, and a positioning component is provided at the end of the connecting slide rod close to the adjustment mechanism. The positioning component is slidably engaged between the positioning ring, the guide positioning ring and a plurality of limit slides.

[0007] As an optimal technical solution of the present invention, a support ring is fixedly sleeved on one end of the handle close to the cutter head, the support ring is movably sleeved on the outside of the connecting slide rod, and an outer magnetic ring is embedded in the end of the handle away from the cutter head.

[0008] As a preferred technical solution of the present invention, the cutter head includes a cutter seat threadedly sleeved on one end of the connecting slide rod, and the other end of the cutter seat passes through the connecting slide rod and is fixedly connected to a cutting edge.

[0009] As an optimal technical solution of the present invention, the adjustment mechanism includes a sealed adjustment chamber opened inside the connecting slide rod, the internal sealing sleeve of the sealed adjustment chamber is connected to the adjustment piston, and the cross-sections of the inner wall of the sealed adjustment chamber and the outer surface of the adjustment piston are both polygonal.

[0010] As a preferred technical solution of the present invention, a second connecting groove is opened inside the connecting slide rod and is located between the positioning assembly and the sealing adjustment chamber. One side of the second connecting groove is connected to the sealing adjustment chamber, and the side surface of the second connecting groove is connected to the positioning assembly.

[0011] As an optimal technical solution of the present invention, the regulating piston is internally threaded with an regulating rod, one end of the regulating rod passes through the regulating piston and the sealed regulating cavity and extends to the outside of the connecting slide rod and is fixedly connected to a knob.

[0012] As a preferred technical solution of the present invention, the adjustment mechanism includes a plurality of sealed cavities opened inside the connecting slide rod and evenly distributed around the second communicating groove. The connecting slide rod further has a plurality of first communicating grooves evenly distributed around the sealed cavities. The plurality of first communicating grooves correspond to the sealed cavities one-to-one and are interconnected. The other end of the sealed cavity is interconnected with the second communicating groove.

[0013] The internal sealing sleeve of the sealing chamber is connected to two linked pistons, and a knob is connected between the two linked pistons. The internal sliding of the first connecting groove is clamped with a positioning spring, and the outer end of the positioning spring extends to the outside of the connecting slide rod. The left and right sides of the positioning spring are respectively clamped with the guide positioning ring and the positioning ring. The front and rear sides of the positioning spring are fitted with two adjacent limit slides. The other end of the positioning spring is fixedly connected to a connecting rod, and the other end of the connecting rod extends to the interior of the sealing chamber and is fixedly connected to a nearby linked piston.

[0014] As a preferred technical solution of the present invention, an inner magnetic ring is fixedly sleeved on one end of the outer surface of the connecting slide rod away from the cutter head, and the inner magnetic ring and the outer magnetic ring attract each other.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1. Due to the setting of the positioning component, the utility model can avoid the situation where the blade is subjected to excessive resistance and the workpiece is excessively damaged due to factors such as misoperation under the restriction of the tool sleeve; and can effectively reduce the safety hazards caused to the operator.

[0017] 2. Due to the setting of the knife holder, the utility model can facilitate the staff to replace the blade with the cooperation of the connecting slide rod, that is, the overall application range of the knife sleeve and the buffer mechanism can be improved. Moreover, when the knife blade is damaged alone, it is not necessary to replace the knife sleeve and the buffer mechanism at the same time, which greatly improves the service life of the knife sleeve and the buffer mechanism.

[0018] 3. Due to the setting of the adjustment mechanism of the utility model, the initial position of the buffer spring can be adjusted with the cooperation of the connecting slide rod, so that the positioning component can pass through the guide positioning ring to make the resistance it encounters different sizes, thereby achieving the effect of trimming the burrs of workpieces with different hardness. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the utility model;

[0020] Figure 2 It is a cross-sectional view of the front side of the utility model;

[0021] Figure 3 It is a partial schematic diagram of the front cross-section of the present invention;

[0022] Figure 4 It is a partial schematic diagram of a side cross-section of the positioning spring of the utility model.

[0023] In the figure: 1. Knife sheath; 11. Handle; 12. Positioning ring; 13. Guide positioning ring; 14. Support ring; 15. Outer magnetic ring; 16. Limit slide; 2. Buffer mechanism; 21. Connecting slide bar; 22. Positioning assembly; 221. Sealing chamber; 222. First connecting groove; 223. Connecting rod; 224. Positioning spring; 225. Buffer spring; 226. Linking piston; 23. Adjusting mechanism; 231. Sealing adjusting chamber; 232. Second connecting groove; 233. Adjusting piston; 234. Adjusting rod; 235. Knob; 24. Inner magnetic ring; 3. Knife head; 31. Knife seat; 32. Blade. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] like Figures 1 to 4 As shown, the utility model provides a flexible trimming knife, comprising a knife sleeve 1, a buffer mechanism 2 is movably installed inside the knife sleeve 1, one end of the buffer mechanism 2 passes through the knife sleeve 1 and is connected to a knife head 3;

[0026] The knife sheath 1 includes a handle 11 that is sleeved on the outside of the buffer mechanism 2. The interior of the handle 11 is fixedly connected to a number of evenly distributed limiting slides 16. The left and right ends of the limiting slides 16 are respectively connected to a guide positioning ring 13 and a positioning ring 12;

[0027] The buffer mechanism 2 includes a connecting slide rod 21 movably arranged in the middle of the tool sleeve 1, and an adjusting mechanism 23 is provided at the end of the connecting slide rod 21 away from the cutter head 3, and a positioning component 22 is provided at the end of the connecting slide rod 21 close to the adjusting mechanism 23. The positioning component 22 is slidably engaged between the positioning ring 12, the guide positioning ring 13 and a plurality of limiting slides 16; due to the setting of the positioning component 22, under the restriction of the tool sleeve 1, it can avoid the situation where the blade 32 is subjected to excessive resistance and causes excessive damage to the workpiece due to factors such as misoperation; and it can effectively reduce the safety hazards caused to the operator.

[0028] Among them, the end of the handle 11 close to the cutter head 3 is fixedly sleeved with a support ring 14, the support ring 14 is movably sleeved on the outside of the connecting slide rod 21, and the end of the handle 11 away from the cutter head 3 is embedded with an outer magnetic ring 15.

[0029] Among them, the cutter head 3 includes a cutter seat 31 threadedly sleeved on one end of the connecting slide rod 21, and the other end of the cutter seat 31 passes through the connecting slide rod 21 and is fixedly connected to the blade 32; due to the setting of the cutter seat 31, the staff can conveniently replace the blade 32 with the cooperation of the connecting slide rod 21, that is, the overall applicability of the cutter sleeve 1 and the buffer mechanism 2 can be improved, and when the blade 32 is damaged alone, it can be replaced without replacing the cutter sleeve 1 and the buffer mechanism 2 at the same time, which greatly improves the service life of the cutter sleeve 1 and the buffer mechanism 2.

[0030] The regulating mechanism 23 includes a sealed regulating chamber 231 provided inside the connecting slide rod 21 , and a regulating piston 233 is sealedly sleeved inside the sealed regulating chamber 231 . The cross-sections of the inner wall of the sealed regulating chamber 231 and the outer surface of the regulating piston 233 are both polygonal.

[0031] Among them, a second connecting groove 232 is opened inside the connecting slide rod 21 and is located between the positioning component 22 and the sealing adjustment cavity 231. One side of the second connecting groove 232 is connected to the sealing adjustment cavity 231, and the side surface of the second connecting groove 232 is connected to the positioning component 22.

[0032] Among them, the internal thread of the adjusting piston 233 is connected with an adjusting rod 234, one end of the adjusting rod 234 passes through the adjusting piston 233 and the sealed adjusting chamber 231 and extends to the outside of the connecting slide rod 21 and is fixedly connected with a knob 235; due to the setting of the adjusting mechanism 23, the initial position of the buffer spring 225 can be adjusted with the cooperation of the connecting slide rod 21, so that the positioning component 22 can pass over the guide positioning ring 13 to make the resistance it encounters different sizes, thereby achieving the effect of trimming the burrs of workpieces with different hardness.

[0033] The adjustment mechanism 23 includes a plurality of sealed cavities 221 formed inside the connecting slide 21 and evenly distributed around the second communicating groove 232. The connecting slide 21 further includes a plurality of first communicating grooves 222 evenly distributed around the sealed cavities 221. The plurality of first communicating grooves 222 correspond to the sealed cavities 221 one-to-one and communicate with each other. The other end of the sealed cavities 221 communicates with the second communicating groove 232.

[0034] The internal sealing sleeve of the sealing chamber 221 is connected to two linked pistons 226, and a knob 235 is connected between the two linked pistons 226. The internal sliding card of the first connecting groove 222 is connected to the positioning spring 224, and the outer end of the positioning spring 224 extends to the outside of the connecting slide rod 21. The left and right sides of the positioning spring 224 are respectively engaged with the guide positioning ring 13 and the positioning ring 12. The front and rear sides of the positioning spring 224 are fitted with two adjacent limit slides 16. The other end of the positioning spring 224 is fixedly connected to the connecting rod 223. The other end of the connecting rod 223 extends to the interior of the sealing chamber 221 and is fixedly connected to a nearby linked piston 226.

[0035] Among them, an inner magnetic ring 24 is fixedly connected to the end of the outer surface of the connecting slide rod 21 away from the cutter head 3, and the inner magnetic ring 24 and the outer magnetic ring 15 attract each other; due to the cooperation between the outer magnetic ring 15 and the inner magnetic ring 24, the positioning spring 224 loses its restriction after passing over the guide positioning ring 13, causing the buffer mechanism 2 to swing freely in the handle 11. The insufficient stability will increase the damage rate. Therefore, under the mutual attraction of the outer magnetic ring 15 and the inner magnetic ring 24, the buffer mechanism 2 can be kept fixed, and at the same time, the cutter head 3 can be accommodated inside the handle 11 for protection.

[0036] The working principle and use process of this utility model:

[0037] Assemble the equipment as shown in the figure, replace and install the appropriate blade 32 through the blade holder 31 as needed, and then move the handle 11. Under the restriction of the positioning ring 12, the guide positioning ring 13 and the positioning assembly 22 of the guide positioning ring 13, the handle 11 controls the movement of the blade 32 by connecting the slide rod 21 and the blade holder 31, thereby achieving the purpose of trimming burrs;

[0038] When the operation is wrong or the deburring force is too great, the resistance to the blade 32 increases. As the resistance increases, the blade 32 pushes the blade 32 and the connecting slide 21 in the opposite direction. Then, under the restriction of the limit slide 16, the connecting slide 21 drives the positioning assembly 22 to squeeze the guide positioning ring 13 and deform the positioning spring 224 until the positioning spring 224 deforms and passes over the guide positioning ring 13. At this time, the handle 11 cannot move the blade 32 left and right due to the restriction of the guide positioning ring 13 and the support ring 14, nor can it rotate the blade 32 due to the restriction of the limit slide 16.

[0039] When the cam 234 is in the closed position, the cam 235 is in the closed position, and the cam 236 is in the closed position, so that the cam 236 is in the closed position, and the cam 236 is in the closed position, so that the cam 236 is in the closed position, and the cam 236 is in the closed position, so that the cam 236 is in the closed position, so that the cam 236 is in the closed position, so that the cam 236 is in the closed position, so that the cam 236 is in the closed position, so that the cam 236 is in the closed position, so that the cam 236 is in the closed position, so that the cam 236 is in the closed position, so that the cam 236 is in the closed position, so that the cam 236 is in the closed position, so that the cam 236 is in the closed position, so that the cam 236 is in the closed position,

[0040] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0041] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A flexible trimming knife, comprising a knife sleeve (1), characterized in that: A buffer mechanism (2) is movably installed inside the knife sleeve (1), and one end of the buffer mechanism (2) passes through the knife sleeve (1) and is connected to the knife head (3); The knife sheath (1) comprises a handle (11) sleeved on the outside of the buffer mechanism (2); a plurality of evenly distributed limiting slides (16) are fixedly connected to the inside of the handle (11); the left and right ends of the limiting slides (16) are respectively connected to a guide positioning ring (13) and a positioning ring (12); The buffer mechanism (2) includes a connecting slide rod (21) movably arranged in the middle of the knife sleeve (1), an adjusting mechanism (23) is provided at one end of the connecting slide rod (21) away from the knife head (3), and a positioning component (22) is provided at one end of the connecting slide rod (21) close to the adjusting mechanism (23), and the positioning component (22) is slidably engaged between the positioning ring (12), the guide positioning ring (13) and a plurality of limiting slide bars (16).

2. The flexible trimming knife according to claim 1, characterized in that: A support ring (14) is fixedly sleeved on one end of the handle (11) close to the cutter head (3), and the support ring (14) is movably sleeved on the outside of the connecting slide rod (21). An outer magnetic ring (15) is embedded in one end of the handle (11) away from the cutter head (3).

3. The flexible trimming knife according to claim 1, characterized in that: The cutter head (3) comprises a cutter seat (31) threadedly sleeved on one end of the connecting slide rod (21); the other end of the cutter seat (31) passes through the connecting slide rod (21) and is fixedly connected to a cutting edge (32).

4. The flexible trimming knife according to claim 1, characterized in that: The regulating mechanism (23) includes a sealed regulating chamber (231) provided inside the connecting slide rod (21), an regulating piston (233) being sealed and sleeved inside the sealed regulating chamber (231), and the cross-sections of the inner wall of the sealed regulating chamber (231) and the outer surface of the regulating piston (233) are both polygonal.

5. The flexible trimming knife according to claim 4, characterized in that: A second communicating groove (232) is provided inside the connecting slide rod (21) and is located between the positioning assembly (22) and the sealing adjustment cavity (231). One side of the second communicating groove (232) is in communication with the sealing adjustment cavity (231), and a side surface of the second communicating groove (232) is in communication with the positioning assembly (22).

6. The flexible trimming knife according to claim 5, characterized in that: The regulating piston (233) is internally threaded with an regulating rod (234), one end of which passes through the regulating piston (233) and the sealed regulating cavity (231) and extends to the outside of the connecting slide rod (21) and is fixedly connected to a knob (235).

7. The flexible trimming knife according to claim 6, characterized in that: The regulating mechanism (23) includes a plurality of sealed cavities (221) opened inside the connecting slide bar (21) and evenly distributed around the second communicating groove (232), and the interior of the connecting slide bar (21) further includes a plurality of first communicating grooves (222) evenly distributed around the sealed cavities (221), the plurality of first communicating grooves (222) corresponding to the sealed cavities (221) one by one and communicating with each other, and the other end of the sealed cavities (221) is communicated with the second communicating groove (232); The sealing cavity (221) is internally sealed with two linked pistons (226), and a knob (235) is connected between the two linked pistons (226). The first connecting groove (222) is internally slidably engaged with a positioning spring (224), and the outer end of the positioning spring (224) extends to the outside of the connecting slide rod (21). The left and right sides of the positioning spring (224) are respectively engaged with the guide positioning ring (13) and the positioning ring (12). The front and rear sides of the positioning spring (224) are fitted with two adjacent limiting slide bars (16). The other end of the positioning spring (224) is fixedly connected to a connecting rod (223), and the other end of the connecting rod (223) extends to the inside of the sealing cavity (221) and is fixedly connected to a nearby linked piston (226).

8. The flexible trimming knife according to claim 1, characterized in that: An inner magnetic ring (24) is fixedly sleeved on one end of the outer surface of the connecting slide rod (21) away from the cutter head (3), and the inner magnetic ring (24) and the outer magnetic ring (15) attract each other.

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