A grinding machine for compression springs and its processing technology

Abstract

The present application relates to a spring grinding machine for compression springs and its processing technology, which includes a machine table, a first grinding wheel, a second grinding wheel, and a conveying track for conveying springs. The first grinding wheel and the second grinding wheel are both rotatably connected to the machine table. The conveying track is located between the first grinding wheel and the second grinding wheel. An outlet hole is provided at the center of the first grinding wheel. The feeding end of the conveying track extends outside the first grinding wheel, and the discharging end of the conveying track is communicated with the outlet hole. It also includes a spring box, a sleeve box, and a feeding component. A plurality of sleeves are provided in the sleeve box. The sleeves are sleeved on the springs and are conveyed to the feeding end of the conveying track through the feeding component. The present application has the following effects: The spring grinding machine can always be in the working state of grinding springs, thereby improving the working efficiency of the spring grinding machine.

Description

Technical Field

[0001] The present application relates to the field of spring processing equipment, and particularly relates to a spring grinding machine for compression springs and its processing technology. Background Art

[0002] A compression spring is a helical spring that bears compressive force. Its cross-section is mostly circular, and the spring generally has equal pitch. The shapes of compression springs include: cylindrical, conical, and a small number of non-circular shapes, etc. There is a certain gap between the coils of the compression spring. When subjected to an external load, the spring contracts and deforms.

[0003] Chinese Utility Model Patent No. CN201920395182.5 discloses a spring grinding machine, which includes a machine frame, a mounting disk rotatably connected to the machine frame, a driving motor arranged on the machine frame for driving the mounting disk to rotate, and a spring grinding device arranged on the machine frame for grinding the end of the spring flat. The mounting disk is evenly distributed with a number of mounting grooves for placing springs along the rotation axis; a chip blowing device is also arranged on the machine frame. The chip blowing device includes a blower arranged on the machine frame, an air duct connected to the air outlet of the blower, and a blowing air pipe arranged at the end of the air duct far from the blower. The air outlet of the blowing air pipe is arranged between the spring grinding device and the mounting disk. This utility model can reduce the accumulation of waste chips at the end of the spring.

[0004] However, before spring grinding, the springs need to be placed on the mounting disk one by one, and then ground by a grinding wheel. After spring grinding, the ground springs need to be removed from the mounting disk, and then the springs to be ground are placed on it. The installation and disassembly of the mounting disk make the operation of grinding springs cumbersome and the work efficiency is not high. Summary of the Invention

[0005] In order to improve the working efficiency of the spring grinding machine, the present application provides a spring grinding machine for compression springs and its processing technology.

[0006] In the first aspect, a spring grinding machine for compression springs provided by the present application adopts the following technical solutions:

[0007] A spring grinding machine for compression springs includes a machine table, a first grinding wheel, a second grinding wheel, and a conveying track for conveying springs. The first grinding wheel and the second grinding wheel are both rotatably connected to the machine table. The conveying track is located between the first grinding wheel and the second grinding wheel. The first grinding wheel is located below the second grinding wheel. An outlet hole is opened at the center of the first grinding wheel. The feeding end of the conveying track extends outside the first grinding wheel, and the discharging end of the conveying track is communicated with the outlet hole;

[0008] It further includes a spring box, a sleeve box, and a feeding component. The spring box is used for loading springs. The sleeve box is provided with a plurality of sleeves. The inner diameter of the sleeve is larger than the outer diameter of the spring. The sleeve is sleeved on the spring and is conveyed to the feeding end of the conveying track through the feeding component.

[0009] By adopting the above technical scheme, the spring is first put on the sleeve, and the spring with the sleeve is input into the feed end of the conveying track in a vertical state through the feeding assembly. The first grinding wheel and the second grinding wheel can grind the two ends of the spring. When the springs with the sleeve enter the conveying track one by one, the spring that enters later can push the spring that enters earlier through the sleeve, so that the spring can be transported to the discharge end of the conveying track, and the spring and the sleeve are output from the conveying track together through the discharge hole. During the feeding and discharging process of the spring, the spring grinding machine can always be in the working state of grinding the spring, so as to improve the working efficiency of the spring grinding machine.

[0010] Preferably, the conveying track is spiral-shaped, and a plurality of limit assemblies are connected to the inner wall of the conveying track, and the limit assemblies are evenly spaced along the extension direction of the conveying track, and the limit assemblies are used to prevent the spring in the conveying track from moving toward the feed end of the conveying track.

[0011] By adopting the above technical solution, the spring enters the conveying track from the feed end of the conveying track. With the input of the spring, the spring is gradually transported from the outer ring of the first grinding wheel and the second grinding wheel to the inner ring along the conveying track. When the first grinding wheel and the second grinding wheel rotate, the spring is subjected to centrifugal force. The limit assembly can prevent the spring from being thrown out from the feed end of the conveying track due to the centrifugal force. At the same time, the spring input first can only be gradually moved to the discharge end of the conveying track by the driving force of the spring input later, thereby extending the time for grinding the spring and improving the grinding effect.

[0012] Preferably, the limiting assembly includes a protrusion and an elastic member, a give way groove is opened on the inner wall of the conveying track, one end of the elastic member is connected to the bottom wall of the give way groove, and the other end of the elastic member is connected to the protrusion, the protrusion is slidingly connected to the inner wall of the give way groove, and an inclined surface is provided at one end of the protrusion away from the bottom wall of the give way groove, and the inclined surface is opposite to the conveying direction of the spring.

[0013] By adopting the above technical solution, when the spring of the later input conveying track pushes the spring of the earlier input conveying track, the sleeve pushes the inclined surface of the protrusion when moving, the elastic part is deformed, and the protrusion is pushed and slides into the give way groove. The sleeve can thus carry the spring for conveying. When the sleeve and the spring are subjected to centrifugal force, the protrusion can resist the sleeve, thereby preventing the spring from moving toward the feed end of the conveying track.

[0014] Preferably, the sleeve is provided with a guide ring, the guide ring is connected to the outer peripheral wall of the sleeve, a guide groove is opened on the inner wall of the conveying track, the length direction of the guide groove is distributed along the extension direction of the conveying track, the guide groove is connected to each of the give way grooves, the give way grooves on the two inner walls of the conveying track are staggered, when the sleeve is conveyed in the conveying track, one end of the guide ring is located in the guide groove and is slidably connected to the guide groove along the length direction of the guide groove, the top of the sleeve is spaced from the first grinding wheel to form a first gap, and the bottom of the sleeve is spaced from the second grinding wheel to form a second gap.

[0015] By adopting the above technical solution, when the sleeve is transported into the conveying track with the spring, one end of the guide ring is located in the guide groove, and the sleeve is transported along the guide groove, thereby limiting the height position of the sleeve in the conveying track and avoiding the end of the sleeve from being polished by the first grinding wheel or the second grinding wheel as much as possible, thereby reducing the loss of the sleeve.

[0016] Preferably, the feeding assembly includes a rotating disk, a first pushing member and a plurality of supporting plates, and the supporting plates are distributed at equal angles along the circumference of the rotating disk. The first pushing member is located above the rotating disk, and the supporting plate is used to place a spring on which the sleeve is sleeved, and the first pushing member is used to push the sleeve into the feed end of the conveying track.

[0017] By adopting the above technical solution, the spring is placed on each supporting plate after being covered with a sleeve. When the rotating disk rotates, each supporting plate approaches the feeding end of the conveying track in turn, and the first pushing member pushes the spring and sleeve on each supporting plate into the conveying track in turn, so that the springs can be conveyed into the conveying track one by one.

[0018] Preferably, a magnetic ring is embedded on the top of the supporting plate, and when the sleeve is placed on the top of the supporting plate, the bottom of the sleeve is adsorbed on the magnetic ring.

[0019] By adopting the above technical solution, when the spring with the sleeve is placed on the top of the supporting plate, the bottom of the sleeve is adsorbed on the magnetic ring, which can minimize the possibility that the sleeve and the spring will be thrown off the supporting plate when the rotating disk drives the supporting plates to rotate. The stability of the spring with the sleeve on the supporting plate can be improved. At the same time, when the first pushing member pushes the sleeve, it is convenient to separate the sleeve from the supporting plate.

[0020] Preferably, the first grinding wheel comprises a first rough portion and a first fine portion, the first rough portion is ring-shaped, the first fine portion is disc-shaped, the first rough portion is sleeved on the first fine portion and the two are integrally formed;

[0021] The second grinding wheel includes a second rough part and a second fine part. The second rough part is annular, and the second fine part is disc-shaped. The second rough part is sleeved on the second fine part and the two are integrally formed.

[0022] By adopting the above technical solution, the spring is gradually conveyed from the outer ring to the inner ring of the first grinding wheel along the spiral conveying track. The two ends of the spring pass through the first rough part and the second rough part for grinding respectively, which can accelerate the speed of grinding the ends of the spring. The two ends of the spring then pass through the first fine part and the second fine part for grinding respectively, which can improve the flatness of the spring ends after grinding.

[0023] Preferably, a first discharge pipe is connected to the bottom of the machine table. One end of the first discharge pipe is communicated with the discharge hole. A second discharge pipe is arranged below the first discharge pipe. The length directions of the first discharge pipe and the second discharge pipe are both distributed along the vertical direction. The central axis of the second discharge pipe is collinear with the central axis of the first discharge pipe. The inner diameter of the second discharge pipe is larger than the outer diameter of the spring and smaller than the outer diameter of the sleeve. The outer diameter of the second discharge pipe is larger than the inner diameter of the sleeve. A discharge gap is formed at an interval between the top end of the second discharge pipe and the bottom end of the first discharge pipe. A second pushing member is arranged at the bottom of the machine table, and the second pushing member is used to push the sleeve horizontally in the discharge gap.

[0024] By adopting the above technical solution, after the spring sleeved with the sleeve is output from the discharge end of the conveying track, it falls into the first discharge pipe through the discharge hole. The spring sleeved with the sleeve falls into the discharge gap from the first discharge pipe. The sleeve falls onto the top of the second discharge pipe, and the spring continues to fall into the second discharge pipe. The second pushing member pushes the sleeve, so that the sleeve can be output, and the spring falls out of the second discharge pipe. In this way, the sleeve and the spring can be discharged separately, and then the sleeve and the spring can be separated, which is convenient for the separate collection of the sleeve and the spring.

[0025] Preferably, a first gear, a second gear and a motor are arranged at the bottom of the first grinding wheel. The first gear is connected to the bottom of the first grinding wheel and a hole is opened in the middle of the first gear and communicated with the discharge hole. The second gear meshes with the first gear, and the output shaft of the motor is connected to the second gear. The motor is used to drive the second gear to rotate.

[0026] By adopting the above technical solution, the motor drives the second gear to rotate. The second gear drives the first grinding wheel to rotate through the first gear. The first grinding wheel can grind the ends of the spring in this way. At the same time, the spring can be discharged through the discharge hole.

[0027] In a second aspect, the present application provides a compression spring processing process, adopting the following technical solution:

[0028] A compression spring processing process includes the following steps:

[0029] S1. Use a spring coiling machine to make a spring from the spring wire;

[0030] S2, collect the springs in S1 in the spring box;

[0031] S3, placing the springs one by one in the sleeves on each bearing plate;

[0032] S4, pushing the spring with the sleeve into the conveying track through the first pushing member;

[0033] S5, grinding the two ends of the spring by using the first grinding wheel and the second grinding wheel;

[0034] S6. Separate the sleeve and the polished spring, and collect the polished spring.

[0035] By adopting the above technical solution, the spring wire is made into a spring through a spring winding machine and collected in a spring box. After the spring is sleeved, it is successively input into the conveying track through the first pushing member for grinding. The polished spring is output from the conveying track and the sleeve and the spring are separated. The sleeve and the polished spring are collected, thereby completing the grinding of the spring end.

[0036] In summary, the present application includes at least one of the following beneficial technical effects:

[0037] 1. The spring is first sleeved, and the spring sleeved is input into the feeding end of the conveying track in a vertical state through the feeding assembly. The first grinding wheel and the second grinding wheel can grind the two ends of the spring. When the spring sleeved enters the conveying track one by one, the spring that enters later can push the spring that enters earlier through the sleeve, so that the spring can be transported to the discharging end of the conveying track. The spring and the sleeve are output from the conveying track together through the discharging hole. During the feeding and discharging process of the spring, the spring grinding machine can always be in the working state of grinding the spring, so as to improve the working efficiency of the spring grinding machine;

[0038] 2. The spring enters the conveying track from the feeding end of the conveying track. With the input of the spring, the spring is gradually transported from the outer ring of the first grinding wheel and the second grinding wheel to the inner ring along the conveying track. When the first grinding wheel and the second grinding wheel rotate, the spring is subjected to centrifugal force. The limit assembly can prevent the spring from being thrown out from the feeding end of the conveying track due to the centrifugal force. At the same time, the first input spring can only be gradually moved to the discharging end of the conveying track by the driving force of the later input spring, so that the grinding time of the spring can be extended, thereby improving the grinding effect;

[0039] 3. When the spring of the rear input conveying track pushes the spring of the first input conveying track, the sleeve pushes the inclined surface of the protrusion when moving, the elastic part is deformed, the protrusion is pushed and slides into the give way groove, and the sleeve can be transported with the spring. When the sleeve and the spring are subjected to centrifugal force, the protrusion can resist the sleeve, thereby preventing the spring from moving to the feed end of the conveying track. Brief Description of the Drawings

[0040] Figure 1 is a schematic diagram of the overall structure of a spring grinding machine for compression springs according to an embodiment of the present application.

[0041] Figure 2 is an exploded schematic diagram of a partial structure of a spring grinding machine for compression springs according to an embodiment of the present application, used to show the conveying track.

[0042] Figure 3 is Figure 1 a partial enlarged schematic diagram at position A in

[0043] Figure 4 is a front view of a spring grinding machine for compression springs according to an embodiment of the present application.

[0044] Figure 5 is along Figure 4 a sectional structure schematic diagram along line A-A in

[0045] Figure 6 is Figure 5 a partial enlarged schematic diagram at position B in

[0046] Description of the Reference Numerals:

[0047] 100, machine table; 101, first grinding wheel; 102, second grinding wheel; 103, discharge hole; 104, first rough part; 105, first fine part; 106, second rough part; 107, second fine part; 108, first discharge pipe; 109, second discharge pipe; 110, discharge gap; 111, second pushing member; 112, first gear; 113, second gear; 114, motor;

[0048] 200, conveying track; 201, relief groove; 202, guide groove;

[0049] 300, spring box;

[0050] 400, sleeve box; 401, sleeve; 402, guide ring;

[0051] 500, feeding assembly; 501, rotating disk; 502, first pushing member; 503, bearing plate; 504, magnetic ring;

[0052] 600, limiting assembly; 601, convex block; 602, elastic member; 603, inclined surface. Detailed Description of the Embodiment

[0053] The present application will be further described in detail below with reference to all the drawings.

[0054] An embodiment of the present application discloses a spring grinding machine for compression springs. Referring to Figure 1 AndFigure 2 For a spring grinding machine for a compression spring, it includes a machine table 100, a first grinding wheel 101, a second grinding wheel 102 and a conveying track 200. The first grinding wheel 101 and the second grinding wheel 102 are both rotatably connected to the machine table 100. The conveying track 200 is used for conveying springs and is located between the first grinding wheel 101 and the second grinding wheel 102. The first grinding wheel 101 and the second grinding wheel 102 are used for grinding the two ends of the spring. An outlet hole 103 is provided at the center of the first grinding wheel 101. The spring is input into the conveying track 200 for grinding, and the ground spring is output through the outlet hole 103, which can improve the working efficiency of the spring grinding machine.

[0055] Refer to Figure 2 and Figure 3 As shown in the figure, the first grinding wheel 101 is located directly below the second grinding wheel 102. Both the first grinding wheel 101 and the second grinding wheel 102 are in the shape of a disc. The first grinding wheel 101 includes a first rough part 104 and a first fine part 105, and the second grinding wheel 102 includes a second rough part 106 and a second fine part 107. Both the first rough part 104 and the second rough part 106 are in the shape of a ring, and the first fine part 105 and the second fine part 107 are in the shape of a disc. The first rough part 104 is sleeved on the first fine part 105 and the two are integrally formed. The second rough part 106 is sleeved on the second fine part 107 and the two are integrally formed. The outlet hole 103 is provided at the center of the first fine part 105.

[0056] Refer to Figure 4 and Figure 5 As shown in the figure, a first gear 112 is connected to the bottom of the first grinding wheel 101. A hole is provided in the middle of the first gear 112 and is communicated with the outlet hole 103. The first gear 112 meshes with a second gear 113. The second gear 113 is connected to a motor 114 for driving. The output shaft of the motor 114 is connected to the second gear 113. The motor 114 drives the first grinding wheel 101 to rotate through the second gear 113 and the first gear 112.

[0057] Refer to Figure 1 and Figure 2 As shown in the figure, the conveying track 200 is in a spiral shape. The top and bottom of the conveying track 200 are respectively spaced from the second grinding wheel 102 and the first grinding wheel 101. The feeding end of the conveying track 200 extends outside the first grinding wheel 101 and is located on the machine table 100. The discharging end of the conveying track 200 is communicated with the outlet hole 103.

[0058] The machine 100 is connected with a spring box 300 and a sleeve box 400 for holding springs to be polished. A plurality of sleeves 401 are arranged in the sleeve box 400. The inner diameter of the sleeve 401 is larger than the outer diameter of the spring. A feeding assembly 500 is also arranged on the machine 100. The sleeve 401 is sleeved on the spring and transported to the feeding end of the conveying track 200 through the feeding assembly 500. The sleeve 401 is sleeved with a guide ring 402. The guide ring 402 is located at half the height of the sleeve 401 and is integrally formed with the outer peripheral wall of the sleeve 401.

[0059] The feeding assembly 500 includes a rotating disk 501, a bearing plate 503 and a first pusher 502. The first pusher 502 is a cylinder. The machine 100 is connected with a round rod, which is arranged in a vertical direction. The rotating disk 501 is a disk and is sleeved on the round rod and is rotatably connected to the round rod. There are multiple bearing plates 503, and each bearing plate 503 is distributed at equal angles along the periphery of the rotating disk 501. A magnetic ring 504 is embedded on the top of each bearing plate 503, and the magnetic ring 504 is used to adsorb the bottom of the sleeve 401. The cylinder housing is connected to the top of the round rod, and the length direction of the cylinder piston rod is consistent with the radial direction of the rotating disk 501, and one end faces the feeding end of the conveying track 200.

[0060] Reference Figure 2 and Figure 6 The inner wall of the conveying track 200 is connected with a plurality of limit assemblies 600, each of which is evenly spaced along the extending direction of the conveying track 200, and the limit assemblies 600 on the two inner walls of the conveying track 200 are staggered. The limit assemblies 600 include a protrusion 601 and an elastic member 602, and the elastic member 602 is a spring. A plurality of clearance grooves 201 are provided on the two inner walls of the conveying track 200, each of which is evenly spaced along the extending direction of the conveying track 200, and each of which is staggered on the two inner walls of the conveying track 200. The elastic member 602 is located in the give way groove 201, one end of the elastic member 602 is connected to the bottom wall of the give way groove 201, and the other end of the elastic member 602 is connected to the protrusion 601. When the elastic member 602 is deformed, the protrusion 601 is slidingly connected to the give way groove 201, and an inclined surface 603 is provided at one end of the protrusion 601 away from the bottom wall of the give way groove 201, and the inclined surface 603 is opposite to the conveying direction of the spring.

[0061] Reference Figure 2 and Figure 3 Guide grooves 202 are provided on both inner walls of the conveying track 200. The length direction of the guide grooves 202 is distributed along the extending direction of the conveying track 200. Each of the yield grooves 201 on the same inner wall of the conveying track 200 is connected to the guide grooves 202 on the same inner wall.

[0062] Reference Figure 2 and Figure 4When the sleeve 401 is transported into the transport track 200, the guide ring 402 is slidably connected with the two guide grooves 202 along the length direction of the guide grooves 202, and the top and bottom of the sleeve 401 are respectively spaced from the first grinding wheel 101 and the second grinding wheel 102 to form a first gap and a second gap.

[0063] Reference Figure 4 and Figure 5 A first discharge pipe 108 is connected to the bottom of the machine 100. The length direction of the first discharge pipe 108 is distributed in the vertical direction. The top of the first discharge pipe 108 is connected to the discharge hole 103. A second discharge pipe 109 is arranged below the first discharge pipe 108. The length direction of the second discharge pipe 109 is consistent with the length direction of the first discharge pipe 108, and the central axes of the second discharge pipe 109 and the first discharge pipe 108 are collinear.

[0064] The first discharge pipe 108 and the second discharge pipe 109 are both round pipes. The inner diameter of the first discharge pipe 108 is larger than the outer diameter of the guide ring 402, and the inner diameter of the second discharge pipe 109 is smaller than the outer diameter of the sleeve 401 and larger than the outer diameter of the spring. The bottom end of the first discharge pipe 108 and the top end of the second discharge pipe 109 are spaced to form a discharge gap 110. A second pusher 111 is connected to the bottom of the machine 100. The second pusher 111 is a cylinder, and the piston rod of the cylinder pushes the sleeve 401 in the discharge gap 110 in the horizontal direction.

[0065] The implementation principle of a spring grinding machine for a compression spring in the embodiment of the present application is as follows: a sleeve 401 is sleeved on a spring and placed on a bearing plate 503, the rotating disk 501 drives the bearing plate 503 to rotate, and the first pushing member 502 pushes the sleeve 401 into the feeding end of the conveying track 200. As the sleeves 401 are input into the conveying track 200 one by one, the sleeves 401 input later push the sleeves 401 input earlier. When the sleeves 401 move along the conveying track 200 toward the discharging end of the conveying track 200, the guide ring 402 is slidably connected with the guide groove 202, the first grinding wheel 101 and the second grinding wheel 102 grind the two ends of the spring respectively, the guide ring 402 pushes the protrusion 601 into the clearance groove 201, and after the elastic member 602 is reset, the protrusion 601 protrudes out of the clearance groove 201, which can prevent the sleeve 401 from moving in the opposite direction due to centrifugal force. As the number of sleeves 401 in the conveying track 200 increases, the first input sleeve 401 is pushed to the discharge end of the conveying track 200 and falls into the first discharge pipe 108 through the discharge hole 103. After the sleeve 401 falls out of the first discharge pipe 108, it falls to the top of the second discharge pipe 109 and is located in the discharge gap 110. At the same time, the spring falls into the second discharge pipe 109 through the discharge gap 110, and the second pushing member 111 pushes the sleeve 401 to be output from the discharge gap 110, thereby separating the sleeve 401 and the spring.

[0066] As the sleeve 401 is continuously fed into the conveying track 200, the first grinding wheel 101 and the second grinding wheel 102 can always grind the spring, and the spring grinding machine can always be in the working state of grinding the spring, thereby improving the working efficiency of the spring grinding machine.

[0067] The embodiment of the present application also discloses a compression spring processing technology.

[0068] A compression spring processing technology includes the following steps:

[0069] S1. Use a spring coiling machine to make a spring wire into a spring;

[0070] S2. Collect the spring in step S1 in the spring box 300;

[0071] S3. Place the springs one by one in the sleeves 401 on each bearing plate 503;

[0072] S4. Push the spring sleeved with the sleeve 401 into the conveying track 200 through the first pushing member 502;

[0073] S5. Grind both ends of the spring with the first grinding wheel 101 and the second grinding wheel 102;

[0074] S6. Separate the sleeve 401 from the ground spring and collect the ground spring.

[0075] The working principle of a compression spring processing technology in the embodiment of the present application is as follows: The spring wire is made into a spring by a spring coiling machine and collected in the spring box 300. After the spring is sleeved with the sleeve 401, it is successively fed into the conveying track 200 through the first pushing member 502 for grinding. The ground spring is output from the conveying track 200, and the sleeve 401 and the spring are separated. The sleeve 401 and the ground spring are collected, thereby completing the grinding of the spring ends.

[0076] The above are all the preferred embodiments of the present application. The protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A spring grinding machine for compression springs, characterized in that: It includes a machine table (100), a first grinding wheel (101), a second grinding wheel (102), and a conveying track (200) for conveying springs. The first grinding wheel (101) and the second grinding wheel (102) are both rotatably connected to the machine table (100). The conveying track (200) is located between the first grinding wheel (101) and the second grinding wheel (102). The first grinding wheel (101) is located below the second grinding wheel (102). A discharge hole (103) is provided at the center of the first grinding wheel (101). The feed end of the conveying track (200) extends outside the first grinding wheel (101), and the discharge end of the conveying track (200) is communicated with the discharge hole (103). It further includes a spring box (300), a sleeve box (400), and a feeding component (500). The spring box (300) is used for loading springs. A plurality of sleeves (401) are provided in the sleeve box (400). The inner diameter of the sleeve (401) is larger than the outer diameter of the spring. The sleeve (401) is sleeved on the spring and is conveyed to the feed end of the conveying track (200) through the feeding component (500). The conveying track (200) is spiral. A plurality of limiting components (600) are connected to the inner wall of the conveying track (200). Each of the limiting components (600) is evenly spaced along the extending direction of the conveying track (200). The limiting components (600) are used to block the springs in the conveying track (200) from moving towards the feed end of the conveying track (200). The limiting component (600) includes a convex block (601) and an elastic member (602). A relief groove (201) is provided on the inner wall of the conveying track (200). One end of the elastic member (602) is connected to the bottom wall of the relief groove (201), and the other end of the elastic member (602) is connected to the convex block (601). The convex block (601) is slidably connected to the inner wall of the relief groove (201). An inclined surface (603) is provided at one end of the convex block (601) away from the bottom wall of the relief groove (201), and the inclined surface (603) faces away from the conveying direction of the spring.

2. The spring grinding machine for compression springs according to claim 1, characterized in that: The sleeve (401) is sleeved with a guide ring (402), the guide ring (402) being connected to the outer peripheral wall of the sleeve (401), the inner wall of the conveying track (200) being provided with a guide groove (202), the length direction of the guide groove (202) being distributed along the extension direction of the conveying track (200), the guide groove (202) being connected to each of the clearance grooves (201), the clearance grooves (201) on the two inner walls of the conveying track (200) being distributed in a staggered manner, when the sleeve (401) is conveyed in the conveying track (200), one end of the guide ring (402) is located in the guide groove (202) and is slidably connected to the guide groove (202) along the length direction of the guide groove (202), the top of the sleeve (401) is spaced from the first grinding wheel (101) to form a first gap, and the bottom of the sleeve (401) is spaced from the second grinding wheel (102) to form a second gap.

3. The spring grinding machine for compression springs according to claim 1, characterized in that: The feeding assembly (500) comprises a rotating disk (501), a first pushing member (502) and a plurality of supporting plates (503), wherein the supporting plates (503) are distributed at equal angles along the circumference of the rotating disk (501), the first pushing member (502) is located above the rotating disk (501), the supporting plate (503) is used to place a spring sleeved with the sleeve (401), and the first pushing member (502) is used to push the sleeve (401) into the feeding end of the conveying track (200).

4. The spring grinding machine for compression springs according to claim 3, characterized in that: A magnetic ring (504) is embedded on the top of the bearing plate (503); when the sleeve (401) is placed on the top of the bearing plate (503), the bottom of the sleeve (401) is adsorbed on the magnetic ring (504).

5. The spring grinding machine for compression springs according to claim 1, characterized in that: The first grinding wheel (101) comprises a first rough portion (104) and a first fine portion (105), the first rough portion (104) is ring-shaped, the first fine portion (105) is disc-shaped, the first rough portion (104) is sleeved on the first fine portion (105), and the two are integrally formed; The second grinding wheel (102) comprises a second rough portion (106) and a second fine portion (107); the second rough portion (106) is ring-shaped, the second fine portion (107) is disc-shaped, the second rough portion (106) is sleeved on the second fine portion (107), and the two are integrally formed.

6. The spring grinding machine for compression springs according to claim 1, characterized in that: A first discharge pipe (108) is connected to the bottom of the machine platform (100). One end of the first discharge pipe (108) is communicated with the discharge hole (103). A second discharge pipe (109) is arranged below the first discharge pipe (108). The length directions of the first discharge pipe (108) and the second discharge pipe (109) are both distributed along the vertical direction. The central axis of the second discharge pipe (109) is collinear with the central axis of the first discharge pipe (108). The inner diameter of the second discharge pipe (109) is larger than the outer diameter of the spring and smaller than the outer diameter of the sleeve (401). The outer diameter of the second discharge pipe (109) is larger than the inner diameter of the sleeve (401). A discharge gap (110) is formed at an interval between the top end of the second discharge pipe (109) and the bottom end of the first discharge pipe (108). A second pushing member (111) is arranged at the bottom of the machine platform (100). The second pushing member (111) is used to push the sleeve (401) horizontally in the discharge gap (110).

7. The spring grinding machine for compression springs according to claim 1, characterized in that: A first gear (112), a second gear (113) and a motor (114) are arranged at the bottom of the first grinding wheel (101). The first gear (112) is connected to the bottom of the first grinding wheel (101), and a hole is formed in the middle of the first gear (112) and communicated with the discharge hole (103). The second gear (113) meshes with the first gear (112). The output shaft of the motor (114) is connected to the second gear (113). The motor (114) is used to drive the second gear (113) to rotate.

8. A processing technology for compression springs, realized by using the spring grinding machine for compression springs according to claim 3, characterized in that: It includes the following steps: S1. Use a spring coiling machine to make a spring wire into a spring; S2. Collect the spring in step S1 in a spring box (300); S3. Place the springs one by one in the sleeves (401) on each bearing plate (503); S4. Push the spring sleeved with the sleeve (401) into the conveying track (200) through the first pushing member (502); S5. Grind the two ends of the spring through the first grinding wheel (101) and the second grinding wheel (102); S6. Separate the sleeve (401) from the ground spring, and collect the ground spring.

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