Chain saw sharpener

Abstract

The utility model belongs to the technical field of chain grinding equipment, and particularly relates to a chain grinding machine which comprises a base, a fixing device and a chain grinding device. The fixing device comprises a rotating seat rotationally arranged at the upper end of the base; the clamping mechanism is mounted on the rotating seat; the limiting mechanism is mounted on the rotating seat, movably arranged above the clamping mechanism and used for abutting against the saw chain; the limiting mechanism comprises a limiting piece, a clamping mechanism and a driving mechanism, wherein the limiting piece is rotationally arranged on the rotating seat and movably arranged above the clamping mechanism; limiting parts are arranged on the two sides of the front end of the limiting piece, and a limiting groove is formed between the two limiting parts. After the limiting piece rotates and abuts against the saw chain, the upper end of the saw chain is arranged in the limiting groove, and the limiting part abuts against the side end of the saw chain, so that shaking of the upper end of the saw chain is limited, shaking of the upper end of the saw chain in the left-right direction during polishing is avoided, the saw chain is kept at the preset position in the polishing process, and deviation of the contact angle of the saw chain and a grinding wheel is avoided; and the grinding accuracy and stability of the saw chain are ensured.

Description

TECHNICAL FIELD

[0001] The technical scheme relates to the technical field of chain grinding equipment, in particular to a chain grinding machine. BACKGROUND

[0002] A saw chain is a cutting tool of a chainsaw, which will become blunt after long-term use, resulting in increased cutting resistance or even inability to cut. Therefore, the chain grinding machine is needed to polish the saw chain to restore its performance.

[0003] For example, a desktop chain grinding machine is disclosed in Chinese Patent CN202320353913.6, which comprises a base, a scale disc and a turntable. A clamping plate is arranged inside the turntable. Limiting knobs are threadedly connected to the front and both sides of the outer wall of the turntable. A guide rod is fixedly connected inside the turntable below the limiting knobs. A telescopic spring is slidingly connected to the outer wall of the guide rod. Supports are slidingly connected to the outer wall of the guide rod on both sides of the telescopic spring. A chain plate is fixedly connected to the outer wall of the support. The chain plate can limit the saw chain and prevent the saw chain from moving along the length direction of the clamping plate, i.e., the forward and backward movement of the saw chain can be avoided.

[0004] However, the chain plate can only constrain the forward and backward movement of the saw chain. When the grinding wheel of the chain grinding device polishes the saw chain, the rotation of the grinding wheel will cause the upper end of the saw chain to sway left and right, resulting in a deviation of the polishing position and a deviation of the polishing angle, and finally causing the problem of incomplete polishing or damage to the saw chain. Content of the utility model

[0005] The purpose of the technical scheme is to provide a chain grinding machine. By arranging a limiting part on both sides of the front end of the limiting member, a limiting groove is formed. The upper end of the saw chain is placed in the limiting groove, and the limiting part abuts against both sides of the saw chain, thereby limiting the upper end of the saw chain. The problem of easy left and right swaying of the upper end of the saw chain during polishing of the chain grinding machine, unstable limiting, deviation of the polishing position or damage to the saw chain is improved.

[0006] The purpose of the technical scheme is achieved as follows:

[0007] A chain grinding machine comprises:

[0008] a base;

[0009] a fixing device mounted on the base for clamping and fixing the saw chain;

[0010] a chain grinding device rotationally arranged at the upper end of the base, which is used for polishing the saw chain on the fixing device;

[0011] The fixing device comprises:

[0012] a rotating seat rotationally arranged at the upper end of the base;

[0013] A clamping mechanism is installed on the rotating seat and used to clamp the saw chain;

[0014] A limiting mechanism is installed on the rotating seat and movably arranged above the clamping mechanism, and used to abut the saw chain on the upper end of the clamping mechanism;

[0015] The limiting mechanism comprises:

[0016] A limiting member is rotatably arranged on the rotating seat and movably arranged above the clamping mechanism. The front end of the limiting member is provided with limiting portions on both sides, and a limiting groove is formed between the two limiting portions.

[0017] When the limiting member rotates and abuts the saw chain, the upper end of the saw chain is arranged in the limiting groove, and the limiting portions abut the side end of the saw chain, thereby limiting the shaking of the upper end of the saw chain.

[0018] Preferably, the groove width of the limiting groove gradually decreases from the rear end to the front end of the limiting member.

[0019] Preferably, the limiting mechanism further comprises:

[0020] A limiting frame is hingedly connected to the rotating seat, and the upper end of the limiting frame is hingedly connected to the limiting member.

[0021] An elastic member is installed at the hinge connection between the limiting frame and the rotating seat, and the elastic member causes the limiting frame to have a tendency to rotate towards the limiting rod one.

[0022] A limiting rod one is threadedly connected to the rotating seat, and the front end of the limiting rod one movably abuts the side end of the limiting frame.

[0023] By adjusting the position of the limiting rod one on the rotating seat, the limiting rod one drives the limiting frame to rotate on the rotating seat, thereby adjusting the position of the limiting member above the clamping mechanism.

[0024] Preferably, the clamping mechanism comprises:

[0025] A first clamping plate is installed on the upper end of the rotating seat.

[0026] A second clamping plate is movably arranged on the upper end of the rotating seat, and the second clamping plate and the first clamping plate are used to clamp the saw chain.

[0027] A locking assembly is connected between the first clamping plate and the second clamping plate, and used to limit the second clamping plate from moving away from the first clamping plate.

[0028] Preferably, the fixing device further comprises a rotation limiting mechanism connected between the rotating seat and the base for limiting rotation of the rotating seat on the base.

[0029] The rotation limiting mechanism comprises:

[0030] A rotation limiting bolt is installed in the middle of the rotating seat, and a lower end of the rotation limiting bolt penetrates through the rotating seat and the base;

[0031] A rotation limiting member is threadedly connected to the lower end of the rotation limiting bolt, and an upper end of the rotation limiting member abuts against a lower end of the base for limiting rotation of the rotating seat.

[0032] Preferably, the rotation limiting mechanism further comprises:

[0033] A rotation limiting arc-shaped hole is formed in an upper end of the base;

[0034] A rotation limiting column is arranged at a lower end of the rotating seat and located beside the rotation limiting bolt, and the rotation limiting column is movably arranged in the rotation limiting arc-shaped hole.

[0035] Preferably, a pointer part is arranged on the rotating seat, and a scale line is arranged on the base and located at a side of the rotating seat.

[0036] Preferably, the chain grinding device comprises:

[0037] A rotating arm is hingedly connected to the base at a lower end, and a hinge connection part between the rotating arm and the base is provided with a return torsion spring;

[0038] A driving member is installed at an upper end of the rotating arm;

[0039] A grinding wheel piece is installed at a driving end of the driving member for grinding the saw chain;

[0040] A second rotation limiting rod is threadedly connected to the rotating arm, and a lower end of the second rotation limiting rod extends out of a lower end of the rotating arm;

[0041] The base is provided with a rotation limiting boss, and when the rotating arm is rotated towards the fixing device, the lower end of the second rotation limiting rod movably abuts against an upper end of the rotation limiting boss to limit a rotation range of the rotating arm.

[0042] The technical scheme has the following prominent and beneficial technical effects compared with the prior art:

[0043] 1、The technical scheme is characterized in that limiting parts are arranged on both sides of the front end of the limiting piece to form a limiting groove; in use, the upper end of the saw chain is arranged in the limiting groove, and the limiting parts abut against both sides of the saw chain, so as to limit the upper end of the saw chain, avoid the left and right direction shaking of the upper end of the saw chain during polishing, make the saw chain keep the preset position during polishing, avoid the deviation of the contact angle of the saw chain and the grinding wheel, and ensure the accuracy and stability of the saw chain polishing.

[0044] 2、The technical scheme is characterized in that a limiting rotation arc-shaped hole is arranged at the upper end of the base, a limiting rotation column is arranged at the lower end of the rotating seat, the limiting rotation column is arranged in the limiting rotation arc-shaped hole and can slide in the limiting rotation arc-shaped hole, and the limiting rotation column and the two ends of the limiting rotation arc-shaped hole abut against each other, so as to limit the rotation range of the rotating seat, ensure the angle controllability and operation safety of the rotating seat during rotation, and ensure the controllability of the chain polishing device on the polishing angle of the saw chain. BRIEF DESCRIPTION OF DRAWINGS

[0045] Figure 1 It is one of the structural schematic diagrams of the technical scheme.

[0046] Figure 2 It is the second structural schematic diagram of the technical scheme.

[0047] Figure 3 It is an explosion view of the limiting mechanism of the technical scheme.

[0048] Figure 4 It is a structural schematic diagram of the limiting piece of the technical scheme.

[0049] Figure 5 It is an explosion view of the clamping mechanism and the limiting rotation mechanism of the technical scheme.

[0050] Figure 6 It is a sectional view of the fixing device of the technical scheme.

[0051] The reference signs are as follows: 1, base; 11, scale line; 12, limiting rotation boss; 13, rotating hole;

[0052] 2, fixing device; 21, rotating seat; 22, pointer part; 23, cross beam; 24, hinged shaft; 25, fixing lug; 26, rotating shaft;

[0053] 3, chain polishing device; 31, rotating arm; 32, driving piece; 33, grinding wheel piece; 34, limiting rotation rod two; 35, return torsional spring;

[0054] 4, clamping mechanism; 41, clamping plate one; 42, clamping plate two; 43, locking assembly; 44, limiting ring; 45, adjusting piece; 46, fixing piece; 47, square block; 48, square hole;

[0055] 5, limiting mechanism; 51, limiting frame; 52, limiting piece; 521, limiting part; 522, limiting groove; 53, elastic piece; 54, limiting rotation rod I;

[0056] 6, rotation limiting mechanism; 61, rotation limiting bolt; 62, rotation limiting piece; 63, rotation limiting arc-shaped hole; 64, rotation limiting column;

[0057] 100, saw chain; 101, cutting part; 102, outer chain plate; 103, inner chain plate. DETAILED DESCRIPTION

[0058] The specific embodiments of the technical solutions will be further described in detail below with reference to the accompanying drawings.

[0059] As Figure 1 and Figure 2 A chain grinding machine, comprising:

[0060] A base 1 which can be placed on a workbench such as a desktop or fixed on a workbench by screws or bolts;

[0061] A fixing device 2 installed at the upper end of the front half of the base 1, used for clamping and fixing the saw chain 100 to avoid movement of the saw chain 100;

[0062] A chain grinding device 3 rotationally arranged at the upper end of the rear half of the base 1, used for grinding the front end of the cutting part 101 of the saw chain 100 on the fixing device 2;

[0063] The fixing device 2 comprises:

[0064] A rotating seat 21 rotationally arranged at the upper end of the base 1;

[0065] A clamping mechanism 4 installed on the cross beam 23 of the rotating seat 21, used for clamping the saw chain 100, and the clamping mechanism 4 clamps the lower half of the inner chain plate 103;

[0066] A limiting mechanism 5 installed on the rotating seat 21 and movably arranged above the clamping mechanism 4, used for abutting against the saw chain 100 at the upper end of the clamping mechanism 4, specifically, the limiting mechanism 5 abuts against the rear end of the cutting part 101 of the saw chain 100;

[0067] The limiting mechanism 5 comprises: Figure 3 and Figure 4 The limiting mechanism 5 comprises:

[0068] A limiting piece 52 rotationally arranged on the rotating seat 21 and movably arranged above the clamping mechanism 4, the front end of the limiting piece 52 used for abutting against the rear end of the cutting part 101 of the saw chain 100; limiting parts 521 are arranged on both sides of the front end of the limiting piece 52, and a limiting groove 522 is formed between the two limiting parts 521;

[0069] When the limiting piece 52 rotates and abuts against the rear end of the cutting part 101 of the saw chain 100, the upper end of the saw chain 100 is placed in the limiting groove 522, and the two limiting parts 521 abut against the left and right two side ends of the saw chain 100 respectively, so as to limit the shaking of the upper end of the saw chain 100, and ensure that the upper end of the saw chain 100 does not shake during the operation of the chain grinding device 3, that is, to reduce the shaking of the cutting part 101 of the saw chain 100, and ensure the accuracy of grinding the saw chain 100.

[0070] During the grinding of the chain grinding machine, the lower end of the inner chain plate 103 of the saw chain 100 is placed in the clamping mechanism 4, the front end of the limiting piece 52 moves to the upper end of the saw chain 100 under its own gravity, and then the saw chain 100 is pulled to move towards the rear end of the limiting piece 52, so that the front end of the limiting piece 52 abuts against the rear end of the cutting part 101, and the two limiting parts 521 abut against the left and right sides of the saw chain 100 respectively. Finally, the chain grinding device 3 is close to the front end of the cutting part 101 and grinds the front end of the cutting part 101, and the two limiting parts 521 can reduce the left and right shaking of the saw chain 100 during grinding.

[0071] The groove width of the limiting groove 522 gradually decreases along the direction from the rear end to the front end of the limiting piece 52. After the chain grinding device 3 grinds the front end of the previous cutting part 101, it is necessary to replace the next cutting part 101 for grinding. At this time, the saw chain 100 needs to be pulled to move away from the front end of the limiting piece 52 (the specific direction is from the rear end to the front end of the limiting piece 52), at this time, the next cutting part 101 will push the front end of the limiting piece 52 to move upwards, and then the next cutting part 101 is moved forward and placed in the grinding position of the chain grinding device 3. At this time, the front end of the limiting piece 52 will fall under its own gravity and abut against the rear end of the cutting part 101, and the groove width of the limiting groove 522 gradually decreases along the direction from the rear end to the front end of the limiting piece 52, which can guide the cutting part 101 to move at the lower end of the limiting piece 52, and avoid the collision between the front end of the cutting part 101 and the limiting part 521, so as to make the saw chain 100 move smoothly.

[0072] In addition, the gradually decreasing groove width of the limiting groove 522 along the direction from the rear end to the front end of the limiting piece 52 can also ensure the stability and firmness of the abutment between the front end of the limiting piece 52 and the saw chain 100, improve the structural strength of the front end of the limiting piece 52, and avoid the bending and deformation of the limiting piece 52.

[0073] As shown in Figure 2 and Figure 3 , the limiting mechanism 5 further comprises:

[0074] The limiting frame 51 is hinged at the side end of the cross beam 23 of the rotating seat 21, that is, the side end of the cross beam 23 is provided with a hinge shaft 24, and the lower end of the limiting frame 51 is hinged on the hinge shaft 24, and the upper end of the limiting frame 51 is hinged with the rear end of the limiting piece 52.

[0075] a resilient member 53 is installed at the hinge between the limiting frame 51 and the rotating seat 21, the middle part of the resilient member 53 is sleeved on the hinge shaft 24, one end of the resilient member 53 is inserted into the side wall of the cross beam 23, the other end of the resilient member 53 abuts against the limiting frame 51, the resilient member 53 makes the limiting frame 51 have a tendency to rotate towards the limiting lever 54, and the resilient member 53 is a torsion spring;

[0076] a limiting lever 54 is threadedly connected to the side end of the cross beam 23 of the rotating seat 21, that is, the side end of the cross beam 23 protrudes a fixing lug 25, the fixing lug 25 has a threaded hole, the limiting lever 54 is threadedly connected with the threaded hole of the fixing lug 25, and the front end of the limiting lever 54 movably abuts against the side end of the limiting frame 51, and the limiting lever 54 is a screw rod or a bolt;

[0077] By adjusting the position of the limiting lever 54 on the rotating seat 21, the limiting lever 54 drives the limiting frame 51 to rotate on the rotating seat 21, that is, the limiting frame 51 rotates on the side wall of the cross beam 23 after overcoming the elastic force of the resilient member 53, so that the upper end of the limiting frame 51 moves above the clamping mechanism 4, the position of the limiting member 52 above the clamping mechanism 4 is adjusted, and then the limiting operation of the cutting part 101 with different lengths is adapted, for example, when the length of the cutting part 101 of the saw chain 100 is small, the limiting lever 54 needs to be moved towards the limiting frame 51, so that the front end of the limiting member 52 can be close to and abut against the rear end of the cutting part 101.

[0078] In combination with Figures 1-2 , Figures 5-6 , the clamping mechanism 4 comprises:

[0079] a clamping plate one 41 is installed on the side end of the cross beam 23 at the upper end of the rotating seat 21;

[0080] a clamping plate two 42 is movably arranged on the side end of the cross beam 23 at the upper end of the rotating seat 21, and a space for clamping the saw chain 100 is arranged between the clamping plate two 42 and the clamping plate one 41;

[0081] a locking assembly 43 is connected to the middle part of the clamping plate one 41 and the clamping plate two 42, and is used to limit the clamping plate two 42 from moving away from the clamping plate one 41, so as to ensure that the clamping plate one 41 and the clamping plate two 42 can clamp the inner link plate 103 of the saw chain 100.

[0082] the two ends of the clamping plate one 41 and the clamping plate two 42 are respectively connected to the side wall of the cross beam 23 through screws, the clamping plate two 42 can slide on the screws, a limiting ring 44 is sleeved on each screw, and the limiting ring 44 is arranged between the clamping plate one 41 and the clamping plate two 42, so as to avoid that the distance between the clamping plate one 41 and the clamping plate two 42 is too close and it is not convenient to separate them.

[0083] The locking assembly comprises an adjusting member 45 and a fixing member 46, the fixing member 46 is provided with a square block 47, the middle part of the first clamping plate 41 and the second clamping plate 42 are provided with square holes 48 matched with the square block 47, the fixing member 46 is inserted into the square holes 48, and the square block 47 is arranged in the square holes 48 to limit the rotation of the fixing member 46 on the first clamping plate 41 and the second clamping plate 42, the adjusting member 45 is provided with a threaded hole, the adjusting member 45 is screwed with the threaded part at the front end of the fixing member 46 through the threaded hole in the adjusting member 45, the fixing member 46 and the adjusting member 45 are close to each other by rotating the adjusting member 45, the adjusting member 45 and the fixing member 46 make the first clamping plate 41 and the second clamping plate 42 close to each other to clamp the saw chain 100, and a handle member is connected to the outside of the adjusting member 45 to facilitate the rotation of the adjusting member 45 by the user, and the handle member and the adjusting member 45 are connected through spline connection to ensure the synchronous rotation of the two.

[0084] In combination Figure 5 And Figure 6 The fixing device 2 further comprises a rotation limiting mechanism 6 connected between the rotating seat 21 and the base 1, for limiting the rotation of the rotating seat 21 on the base 1.

[0085] The rotation limiting mechanism 6 comprises:

[0086] A rotation limiting bolt 61 is installed in the middle part of the rotating seat 21, and the lower end of the rotation limiting bolt 61 penetrates through the lower end of the rotating seat 21 and the base 1, the rotation limiting bolt 61 is a hexagonal bolt, and a hexagonal hole is formed in the middle part of the rotating seat 21 to match the hexagonal bolt, so that the rotation limiting bolt 61 and the rotating seat 21 rotate synchronously.

[0087] A rotation limiting member 62 is threadedly connected to the lower end of the rotation limiting bolt 61, and the upper end of the rotation limiting member 62 abuts against the lower end of the base 1, for limiting the rotation of the rotating seat 21 on the upper end of the base 1, the rotation of the rotating seat 21 on the base 1 is limited by the friction force generated between the abutting portion of the rotation limiting member 62 and the lower end of the base 1 and the friction force generated between the abutting portion of the lower end of the rotating seat 21 and the upper end of the base 1, and the lower end of the rotation limiting bolt 61 penetrates through the rotating seat 21 and the base 1 and is connected to the rotation limiting member 62.

[0088] The rotation limiting mechanism 6 further comprises:

[0089] A rotation limiting arc-shaped hole 63 is formed in the upper end of the base 1, and the rotation limiting arc-shaped hole 63 is located on the side of the rotation center of the rotating seat 21;

[0090] A rotation limiting column 64 is arranged at the lower end of the rotating seat 21 and located on the side of the rotation limiting bolt 61, and the rotation limiting column 64 is movably arranged in the rotation limiting arc-shaped hole 63, the stability of the rotating seat 21 during the rotation on the upper end of the base 1 is ensured by the sliding of the rotation limiting column 64 in the rotation limiting arc-shaped hole 63, and the rotation range of the rotating seat 21 is limited by the abutting of the rotation limiting column 64 and the inner walls of the two ends of the rotation limiting arc-shaped hole 63.

[0091] The rotating seat 21 is provided with a pointer part 22, and the base 1 is provided with a plurality of scale lines 11, which are distributed in a fan shape on one side of the base 1 and located at the side of the rotating seat 21. When the pointer part 22 points to different scale lines 11, it represents the corresponding angle of the rotating seat 21 rotating on the base 1.

[0092] By adjusting the angle of the rotating seat 21 rotating on the base 1, the grinding of the cutting part 101 with different inclination angles can be realized. Since the inclination angles of different cutting parts 101 of the saw chain 100 are different, the angle of the rotating seat 21 on the base 1 needs to be adjusted to adapt the inclination angle of the cutting part 101 to the grinding wheel sheet 33 of the grinding device 3.

[0093] The lower end of the rotating seat 21 is provided with a rotating shaft 26, which is inserted into the rotating hole 13 on the base 1. The lower end of the limiting rotation bolt 61 passes through the rotating shaft 26 and the rotating hole 13, and the axis of the limiting rotation bolt 61 coincides with that of the rotating shaft 26.

[0094] In combination with Figure 1 and Figure 2 , the grinding device 3 comprises:

[0095] A rotating arm 31, the lower end of which is hinged to the base 1, and a reset torsion spring 35 is arranged at the hinge between the rotating arm 31 and the base 1. The two ends of the reset torsion spring 35 are respectively abutted on the rotating arm 31 and the base 1, and the reset torsion spring 35 makes the rotating arm 31 have a movement tendency away from the fixing device 2.

[0096] A driving part 32, which is a motor, is installed at the upper end of the rotating arm 31.

[0097] A grinding wheel sheet 33 is installed at the driving end of the driving part 32, which is used for grinding the saw chain 100.

[0098] A limiting rotation rod two 34 is threadedly connected to the rotating arm 31, and the lower end of the limiting rotation rod two 34 extends out of the lower end of the rotating arm 31.

[0099] A limiting rotation boss 12 is arranged on the base 1. When the rotating arm 31 rotates towards the fixing device 2, the lower end of the limiting rotation rod two 34 movably abuts against the upper end of the limiting rotation boss 12, which limits the rotating range of the rotating arm 31, so as to avoid the moving distance of the grinding wheel sheet 33 from the saw chain 100 on the fixing device 2 exceeding the set distance and causing the saw chain 100 to be ground excessively. When the lower end of the limiting rotation rod two 34 abuts against the limiting rotation boss 12, it indicates that the grinding depth of the grinding wheel sheet 33 reaches the set value, which avoids the saw chain 100 from being ground excessively by the grinding wheel sheet 33 and being broken or damaged.

[0100] The grinding chain device 3 further comprises a battery and a switch, the battery provides power for the driving member 32, the battery and the switch are prior art, and the battery can be replaced by a power line.

[0101] The saw chain 100 comprises a cutting part 101, an outer chain plate 102 and an inner chain plate 103, and the specific structure of the saw chain 100 is referred to Chinese patent CN201920366217.2, and the inner chain plate 103 is the inner chain link described in the patent, and details are not repeated here.

[0102] The basic principle and main features of the technical solution and the advantages of the technical solution are shown and described above. Those skilled in the art should understand that the technical solution is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principle of the technical solution. Without departing from the spirit and scope of the technical solution, the technical solution can be variously changed and improved, and these changes and improvements all fall within the scope of the claimed technical solution. The scope of protection of the technical solution is defined by the appended claims and their equivalents.

[0103] It should be understood that the structures, proportions, sizes, etc. shown in the drawings of the specification are only used to cooperate with the content disclosed in the specification for understanding and reading by those skilled in the art, and do not define the limiting conditions for implementing the technical solution, so they do not have technical substantive significance. Any modification of structure, change of proportion relationship or adjustment of size, without affecting the effect and purpose that the technical solution can produce, should still fall within the scope of the technical content disclosed by the technical solution. At the same time, the terms such as "up", "down", "left", "right", "middle" and "one" in the specification are only for clear description, and not to limit the scope of implementation of the technical solution, the change or adjustment of the relative relationship, without substantial change of technical content, is also regarded as the scope of implementation of the technical solution.

[0104] It should also be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or can have a middle element. When an element is referred to as "connected" to another element, it can be directly connected to the other element or indirectly connected to the other element through a middle element.

[0105] In addition, the descriptions in the present application involving "first", "second", etc. are only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it, when the combination of technical solutions appears contradictory or cannot be realized, it should be considered that the combination of such technical solutions does not exist, nor within the protection scope required by the present application.

Claims

1. A chain grinding machine characterized by, It includes: Base (1); Fixing device (2) installed on the base (1) for clamping and fixing the saw chain; Chain grinding device (3) is rotationally arranged at the upper end of the base (1), and the chain grinding device (3) is used for grinding the saw chain on the fixing device (2); Wherein, the fixing device (2) comprises: Rotary seat (21) rotationally arranged on the upper end of the base (1); Clamping mechanism (4) is installed on the rotary seat (21), and the clamping mechanism (4) is used for clamping the saw chain; Limiting mechanism (5) is installed on the rotary seat (21), and the limiting mechanism (5) is movably arranged above the clamping mechanism (4), and the limiting mechanism (5) is used for abutting against the saw chain on the upper end of the clamping mechanism (4); Wherein, the limiting mechanism (5) comprises: Limiting piece (52) rotationally arranged on the rotary seat (21), and the limiting piece (52) is movably arranged above the clamping mechanism (4); The front end of the limiting piece (52) is provided with limiting portions (521) on both sides, and a limiting groove (522) is formed between the two limiting portions (521); When the limiting piece (52) rotates and abuts against the saw chain, the upper end of the saw chain is arranged in the limiting groove (522), and the limiting portion (521) abuts against the side end of the saw chain, so as to limit the shaking of the upper end of the saw chain.

2. The chain grinder according to claim 1, wherein: The groove width of the limiting groove (522) gradually decreases from the rear end to the front end of the limiting piece (52).

3. The chain grinder according to claim 1, wherein: The limiting mechanism (5) further comprises: Limiting frame (51) is hinged on the rotary seat (21), and the upper end of the limiting frame (51) is hinged with the limiting piece (52); Elastic member (53) is installed at the hinge between the limiting frame (51) and the rotary seat (21), and the elastic member (53) makes the limiting frame (51) have a tendency to rotate towards the limiting rod (54); Limiting rod (54) is threadedly connected to the rotary seat (21), and the front end of the limiting rod (54) movably abuts against the side end of the limiting frame (51); By adjusting the position of the limiting rod (54) on the rotary seat (21), the limiting rod (54) drives the limiting frame (51) to rotate on the rotary seat (21), so as to adjust the position of the limiting piece (52) above the clamping mechanism (4).

4. The chain grinder according to claim 1, wherein: The clamping mechanism (4) comprises: Clamping plate one (41) is installed on the upper end of the rotary seat (21); Clamping plate two (42) is movably arranged on the upper end of the rotary seat (21), and the clamping plate two (42) and the clamping plate one (41) are used for clamping the saw chain; Locking assembly (43) is connected between the clamping plate one (41) and the clamping plate two (42), and is used for limiting the clamping plate two (42) from moving away from the clamping plate one (41).

5. The chain grinding machine according to any one of claims 1-4, characterized in that: the fixing device (2) further comprises a rotation limiting mechanism (6) connected to the rotating seat (21) and the base (1) for limiting the rotation of the rotating seat (21) on the base (1); the rotation limiting mechanism (6) comprises: a rotation limiting bolt (61) installed in the middle of the rotating seat (21), and the lower end of the rotation limiting bolt (61) penetrates the rotating seat (21) and the base (1); a rotation limiting piece (62) threadedly connected to the lower end of the rotation limiting bolt (61), and the upper end of the rotation limiting piece (62) abuts against the lower end of the base (1) for limiting the rotation of the rotating seat (21).

6. The chain grinding machine according to claim 5, characterized in that: the rotation limiting mechanism (6) further comprises: a rotation limiting arc-shaped hole (63) formed in the upper end of the base (1); a rotation limiting column (64) arranged at the lower end of the rotating seat (21) and located beside the rotation limiting bolt (61), and the rotation limiting column (64) is movably arranged in the rotation limiting arc-shaped hole (63).

7. The chain grinding machine according to any one of claims 1-4 or 6, characterized in that: the rotating seat (21) is provided with a pointer part (22), the base (1) is provided with a scale line (11), and the scale line (11) is located beside the rotating seat (21).

8. The chain grinding machine according to any one of claims 1-4 or 6, characterized in that: the chain grinding device (3) comprises: a rotating arm (31) hingedly connected to the base (1) at the lower end, and a reset torsion spring is arranged at the hinge between the rotating arm (31) and the base (1); a driving piece (32) installed at the upper end of the rotating arm (31); a grinding wheel piece (33) installed at the driving end of the driving piece (32) for grinding the saw chain; a second rotation limiting rod (34) threadedly connected to the rotating arm (31), and the lower end of the second rotation limiting rod (34) extends out of the lower end of the rotating arm (31); a rotation limiting boss (12) is arranged on the base (1), and when the rotating arm (31) rotates towards the fixing device (2), the lower end of the second rotation limiting rod (34) movably abuts against the upper end of the rotation limiting boss (12) to limit the rotation range of the rotating arm (31).

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