Automatic feeding mechanism for spring grinding

Abstract

The utility model belongs to the technical field of spring production, and particularly relates to an automatic feeding mechanism for spring grinding, which comprises chain links, a plurality of chain links are connected end to end to form a complete chain, the chain links are hinged through shaft pins, each chain link is provided with two arc-shaped buckle pieces, a spring can be wrapped between every two opposite buckle pieces, and the chain links are hinged through shaft pins. A driven wheel and a driving wheel are respectively in meshed transmission connection between chains formed by the chain links, a fixed shaft is rotatably connected to the axle center of the driven wheel, the fixed shaft is fixedly connected with a panel, the bottom of the panel is fixedly connected with a cabinet, a movable shaft is fixedly connected to the axle center of the driving wheel, and the movable shaft is rotatably connected with the panel. According to the feeding mechanism, the size occupied by the feeding mechanism can be greatly saved, the feeding distance and direction can be adjusted more conveniently, flexibly and freely, the buckling pieces can be closed when the chains move in the linear direction, springs are effectively prevented from being separated due to vibration, and conveying continuity is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of spring production equipment, in particular to an automatic feeding mechanism for spring grinding. Background Art

[0002] At present, the spring filling method of the spring grinding machine mostly adopts the feeding motor and infrared control pause. The filling device structure is complex, the production cost is high, the failure rate is high, the maintenance is difficult, the filling speed is slow, and the production speed is slow.

[0003] The Chinese patent with authorization announcement number CN104117906B discloses a spring filling device for a spring grinding machine, comprising a fixed platform, a concave cam, a rotary disk, a rotating shaft, a push rod and a spring pushing structure, the rotating shaft is fixed to the fixed platform, the rotary disk and the concave cam are sleeved on the rotating shaft in sequence, the outer circumference of the concave cam is evenly spaced with grooves and bosses, the outer circumference of the rotary disk is evenly distributed with spring hole seats, one end of the push rod contacts the outer circumference of the concave cam, the other end of the push rod is connected to the push rod spring, the outer circumference of the push rod spring is sleeved with a push rod fixing seat, the push rod spring is fixedly connected to the inner side wall of the push rod fixing seat, the spring pushing structure comprises a slider pressure plate, a slider and a slide groove, one side of the slider pressure plate is fixedly connected to the slider, the other side of the slider pressure plate is fixedly sleeved on the push rod, the bottom of the slider pressure plate is fixed on the fixed platform, the slide groove is provided on the fixed platform, the slider is adapted and slidably connected to the slide groove, can be automatically loaded continuously without stopping, the loading is accurate, greatly improves production efficiency, has low manufacturing cost, simple operation, simple and easy maintenance, and reduces spring production cost.

[0004] This patent was applied for by our company many years ago. In subsequent actual production practice, we found the following areas for improvement:

[0005] 1. In actual processing scenarios, the original disc-type conveying method can only increase the diameter of the disc when the loading and conveying distance needs to be adjusted. The useless volume will take up a lot of space, resulting in a waste of factory space, and it is not easy to adjust the conveying distance and direction.

[0006] 2. During the conveying process of the disc conveying method, the spring holes are completely exposed and there is no restriction on the spring. In addition, during the operation of the disc, the centrifugal force of the disc rotation and the start-stop vibration when loading the spring can easily cause the spring to detach from the spring hole, affecting the continuity and stability of the conveying. Utility Model Content

[0007] In order to overcome the deficiencies of the prior art, the present invention solves the technical problem that, by providing a chain formed by hinged chain links, the volume occupied by the feeding mechanism can be greatly saved, and compared with the traditional disc-type feeding method, the feeding distance and direction can be adjusted more conveniently and flexibly and freely, and by providing buckles, when the chain rotates at the driven wheel and the driving wheel, the two buckles can be opened to facilitate loading and unloading, and when the chain runs in a straight line, the two buckles can be closed to buckle and wrap the spring for transportation, effectively avoiding the problem of the spring falling off due to starting and stopping and mechanical vibration during the feeding process.

[0008] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: an automatic feeding mechanism for spring grinding springs, comprising chain links, a plurality of chain links connected end to end to form a complete chain, each of the chain links being hinged by an axle pin, each of the chain links being provided with two arc-shaped buckle plates, a spring being wrapped between every two opposing buckle plates, a collar being sleeved on each axle pin, a driven wheel and a driving wheel being meshed and connected to each other in a transmission manner, a fixed shaft being rotatably connected to the axis of the driven wheel, a panel being fixedly connected to the fixed shaft, a cabinet being fixedly connected to the bottom of the panel, a movable shaft being fixedly connected to the axis of the driving wheel, and the movable shaft being rotatably connected to the panel.

[0009] Furthermore, a plurality of slide rails are evenly distributed and fixedly connected on one side of the panel surface close to the driven wheel, and the end of each slide rail points between the corresponding two buckles. A slider is slidably connected in each slide rail, and a through straight groove is provided in the slide rail and the panel. A sliding pin slidably connected to the straight groove is fixedly connected to the bottom side of each slider, and the fixed axis passes through the bottom end of the panel and is rotatably connected to a swing plate, and an arc groove is provided on the swing plate at the corresponding position of each straight groove, and each arc groove is slidably connected to the corresponding sliding pin.

[0010] Furthermore, the bottom side of the panel is fixedly connected to a disk seat rotatably connected to a sliding pin, the end of the swinging disk away from the sliding pin is hinged to a first hinge, the bottom side of the panel is fixedly connected to a second hinge on one side of the first hinge, and an electric drive cylinder is fixedly connected between the rotating end of the second hinge and the first hinge.

[0011] Furthermore, the cabinet is fixedly connected to a support plate at one end near the driven wheel, and a clamping plate is fixedly connected to the top of the support plate. A plurality of feed pipes are clamped and connected between the clamping plate and the top of the support plate. The end of each feed pipe near the slide rail is bent downward and extends into the corresponding slide rail, and the bottom end of the feed pipe fits tightly with the corresponding slider and slides relative to it.

[0012] Furthermore, a rotation sensor is fixedly connected to the bottom side of the panel at a position corresponding to the dynamic shaft, and the detection end of the rotation sensor is transmission-connected to the dynamic shaft through the bottom end of the panel. A motor seat is fixedly connected to the bottom side of the panel at a position corresponding to the dynamic shaft, and a motor is fixedly connected to the bottom side of the motor seat. The power output end of the motor passes through the motor seat and is transmission-connected to the dynamic shaft.

[0013] Furthermore, guide grooves are provided on the surface of the panel at corresponding positions of the chain composed of chain links, and the bottom end of each axle pin extends into the guide groove and is slidably connected to the guide groove. Each of the slide rails is fixedly connected with an arc-shaped baffle surrounding the outside of the chain links and buckles.

[0014] In summary, compared with the prior art, the beneficial effects of the present invention are:

[0015] (1) By setting up a chain formed by hinged chain links, the volume occupied by the feeding mechanism can be greatly saved, and compared with the traditional disc feeding method, the feeding distance and direction can be adjusted more conveniently and flexibly.

[0016] (2) By setting the buckles, when the chain rotates at the driven wheel and the driving wheel, the two buckles can be opened to facilitate loading and unloading. When the chain runs in a straight line, the two buckles can be closed to buckle and wrap the spring for transportation, effectively avoiding the problem of the spring falling off due to the start and stop and mechanical vibration during the loading process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of the present utility model.

[0018] Figure 2 It is the main view of the utility model.

[0019] Figure 3 for Figure 2 Stereoscopic cross-sectional view at AA in the middle.

[0020] Figure 4 for Figure 2 A three-dimensional cross-sectional view of the middle BB.

[0021] Figure 5 for Figure 2 Stereoscopic cross-sectional view at CC in the middle.

[0022] Figure 6 It is a structural diagram of the driven wheel.

[0023] Figure 7 Schematic diagram of the structure at the chain link.

[0024] Explanation of the reference numerals: panel 10; cabinet 11; support plate 12; feed tube 13; splint 14; slide rail 15; slider 16; straight groove 17; slide pin 18; swing plate 19; arc groove 20; plate seat 21; first hinge 22; second hinge 23; electric drive cylinder 24; fixed shaft 25; driven wheel 26; chain link 27; buckle 28; shaft pin 29; collar 30; guide groove 31; driving wheel 32; driving shaft 33; rotation sensor 34; motor seat 35; motor 36; arc baffle 37. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0026] Example 1:

[0027] like Figure 1-7 As shown, an automatic feeding mechanism for spring grinding springs includes a panel 10, the bottom of the panel 10 is fixedly connected to the cabinet 11, a fixed shaft 25 is fixedly connected to the panel 10, the upper end of the fixed shaft 25 is rotatably connected to a driven wheel 26, an end of the panel 10 away from the driven wheel 26 is rotatably connected to a driven shaft 33, the upper end of the driven shaft 33 is fixedly connected to a driving wheel 32, and a chain formed by a plurality of chain links 27 is transmission-connected between the driving wheel 32 and the driven wheel 26, each chain link 27 is provided with two arc-shaped buckles 28, and a spring can be wrapped between each two opposing buckles 28.

[0028] By providing a chain formed by hinged links 27, the volume occupied by the feeding mechanism can be greatly saved, and compared with the traditional disc-type feeding method, the feeding distance and direction can be adjusted more conveniently and flexibly.

[0029] By setting the buckle 28, when the chain rotates at the driven wheel 26 and the driving wheel 32, the two buckle plates 28 can be opened to facilitate loading and unloading. When the chain runs in a straight line, the two buckle plates 28 can be closed to buckle and wrap the spring for transportation, effectively avoiding the problem of the spring falling off due to starting and stopping and mechanical vibration during the loading process.

[0030] like Figure 4 、 Figure 5 、 Figure 6 and Figure 7 As shown, each link 27 is hinged by an axle pin 29, and a ring 30 is sleeved on each axle pin 29. The driven wheel 26 and the driving wheel 32 can engage with each ring 30. A guide groove 31 is provided on the surface of the panel 10 at the corresponding position of the chain formed by the link 27. The bottom end of each axle pin 29 extends into the guide groove 31 and is slidably connected to the guide groove 31.

[0031] By providing the guide groove 31 , the movement of the chain can be guided, ensuring that the chain composed of the links 27 can operate more stably, thereby improving the stability of the spring conveying and further preventing the spring from falling off due to vibration.

[0032] like Figure 1-6 As shown, a plurality of slide rails 15 are evenly distributed and fixedly connected on one side of the surface of the panel 10 near the driven wheel 26, and the end of each slide rail 15 points between the corresponding two buckles 28. A slider 16 is slidably connected in each slide rail 15. A support plate 12 is fixedly connected to one end of the cabinet 11 near the driven wheel 26, and a splint 14 is fixedly connected to the top of the support plate 12. A plurality of feed tubes 13 are clamped and connected between the splint 14 and the top of the support plate 12. The end of each feed tube 13 near the slide rail 15 is bent downward and extends into the corresponding slide rail 15. The bottom end of the feed tube 13 fits tightly with the corresponding slider 16 and slides relative to each other.

[0033] The springs are introduced into the slide rail 15 by providing a feeding tube 13, and then the springs are repeatedly pushed one by one between the corresponding two buckles 28 by using the slider 16, thereby realizing the loading of the springs, and multiple springs can be loaded at the same time.

[0034] like Figure 1-6 As shown, a through straight groove 17 is provided in the slide rail 15 and the panel 10, and a sliding pin 18 slidably connected to the straight groove 17 is fixedly connected to the bottom side of each slider 16, and a fixed shaft 25 passes through the bottom end of the panel 10 and is rotatably connected to a swing plate 19, and an arc groove 20 is provided on the swing plate 19 at a corresponding position of each straight groove 17, and each arc groove 20 is slidably connected to the corresponding sliding pin 18, and a disk seat 21 rotatably connected to the sliding pin 18 is fixedly connected to the bottom side of the panel 10, and a first hinge 22 is hinged on the end of the swing plate 19 away from the sliding pin 18, and a second hinge 23 is fixedly connected to the bottom side of the panel 10 on one side of the first hinge 22, and an electric drive cylinder 24 is fixedly connected between the rotating end of the second hinge 23 and the first hinge 22.

[0035] By controlling the extension and contraction of the first hinge 22, the swing plate 19 is driven to swing back and forth, so that under the joint action of the arc groove 20 and the straight groove 17, the sliding pin 18 drives the slider 16 to slide back and forth in the slide rail 15, thereby realizing the function of loading the spring.

[0036] like Figure 4 and Figure 6 As shown, a rotation sensor 34 is fixedly connected to the bottom side of the panel 10 at a position corresponding to the dynamic shaft 33, and the detection end of the rotation sensor 34 is transmission-connected to the dynamic shaft 33 through the bottom end of the panel 10, and a motor base 35 is fixedly connected to the bottom side of the panel 10 at a position corresponding to the dynamic shaft 33, and a motor 36 is fixedly connected to the bottom side of the motor base 35, and the power output end of the motor 36 passes through the motor base 35 and is transmission-connected to the dynamic shaft 33.

[0037] By setting up the motor 36, the driving wheel 32 is driven to drive the chain to operate and realize the loading action. By controlling the rotation sensor 34, the start and stop of the motor 36 can be controlled and the start and stop positions of the chain formed by the chain link 27 can be controlled, so that the opening position of the buckle 28 can be accurately aligned with the slide rail 15, and at the same time, the extension and retraction of the electric drive cylinder 24 can be controlled to achieve a continuous and stable spring loading effect.

[0038] like Figure 1 、 Figure 4 and Figure 6 As shown, an arc-shaped baffle 37 surrounding the outer side of the chain link 27 and the buckle 28 is fixedly connected to each panel 10 around each slide rail 15 .

[0039] The arc-shaped baffle 37 can effectively prevent the spring from being separated due to inertia and centrifugal force when the spring moves at the driven wheel 26 due to the small turning radius, thereby ensuring the stability of the spring transportation.

[0040] In this embodiment, initially, the device is connected to the power supply and control system, and the feed pipe 13 is connected to the feeding equipment in front, so that the springs to be processed can continuously enter the feed pipe 13. At this time, each slider 16 is located at the bottom end of the feed pipe 13, blocking the bottom opening of the feed pipe 13 so that the spring cannot enter the slide rail 15.

[0041] At this time, the control system starts the motor 36, and the motor 36 drives the driven shaft 33 to drive the driving wheel 32 to rotate, and the driving wheel 32 drives the chain formed by the chain links 27 to operate. The chain rotates at the driven wheel 26 and the driving wheel 32 to change the moving direction, and the cleats 28 here are expanded along the arc trajectory of the driven wheel 26 and the driving wheel 32, while the cleats 28 in the straight direction are closed to each other.

[0042] The rotation stroke of the movable shaft 33 is detected by the rotation sensor 34, and the motor 36 is turned off after each slide rail 15 is aligned with the gap between the two buckle pieces 28. At this time, the control system automatically controls the electric drive cylinder 24 to extend outward, so that the swing plate 19 rotates around the fixed axis 25. The sliding pin 18 pulls each slider 16 to slide away from the buckle piece 28 under the joint action of the arc groove 20 and the straight groove 17. At this time, the slider 16 no longer blocks the bottom end of the feed tube 13, and the spring in the feed tube 13 falls into the slide rail 15 under the action of gravity.

[0043] When the swing plate 19 rotates to the point where it can no longer pull the slider 16, the control system controls the electric drive cylinder 24 to retract, causing the slider 16 to move in the opposite direction and slide toward the clip 28. The slider 16 then gradually pushes the spring that falls into the slide rail 15 into the gap between the two clips 28, completing the spring loading action. The sliders 16 operate synchronously and can load multiple springs at the same time.

[0044] After the electric drive cylinder 24 stops working, the control system starts the motor 36 again to drive the chain to move. The spring loaded between the two buckles 28 moves along with the movement of the chain for transportation until the rotation sensor 34 detects that the gaps between the subsequent empty buckles 28 on the chain are aligned with each slide rail 15 again. Then the motor 36 is turned off again and the spring is transferred again. This is repeated continuously to achieve continuous and efficient loading of the spring. Compared with the original disc loading method, it saves more space and can more conveniently and flexibly adjust the conveying distance and conveying direction.

[0045] During the process of the spring moving and conveying with the chain, due to the shielding and restriction of the arc-shaped baffle 37, the spring loaded near the driven wheel 26 will not be detached due to the centrifugal force generated when the driven wheel 26 rotates, and when the spring moves to a straight-line moving direction with the chain, the two adjacent buckle plates 28 will engage with each other, stably restricting the spring between the two buckle plates 28, and each axle pin 29 is slidably connected to the guide groove 31 so that the chain will not shake or deform, thereby effectively preventing the spring from detaching due to vibration during the conveying process, thereby ensuring the stability of the conveying.

[0046] When the spring moves with the chain to the vicinity of the driving wheel 32, each cleat 28 is unfolded again along the arc track of the driving wheel 32, so that the spring is no longer restricted by the cleat 28, which facilitates the subsequent spring grinding machine to take out the material for processing.

[0047] The above-mentioned electric drive cylinder 24, rotation sensor 34, motor 36, etc. are mature existing technologies and will not be elaborated in detail herein.

[0048] For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of the components as the criteria for distinction. For example, "including" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve the technical problem within a certain error range and basically achieve the technical effect.

[0049] It should be noted that the terms "include," "comprises," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a product or system comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such product or system. In the absence of further limitations, an element defined by the phrase "comprising a..." does not exclude the presence of other identical elements in the product or system comprising the element.

[0050] The above description shows and describes several preferred embodiments of the present application. However, as previously mentioned, it should be understood that the present application is not limited to the form disclosed herein and should not be construed as excluding other embodiments. Instead, the present application can be used in various other combinations, modifications, and environments and can be modified within the scope of the application concept described herein through the above teachings or technology or knowledge in the relevant field. Modifications and changes made by those skilled in the art that do not depart from the spirit and scope of the present application should be protected by the claims appended hereto.

Claims

1. A spring grinding and automatic feeding mechanism, characterized in that: The invention comprises a chain link (27), wherein a plurality of the chain links (27) are connected end to end to form a complete chain, wherein each of the chain links (27) is hinged by an axle pin (29), and each of the chain links (27) is provided with two arc-shaped buckle pieces (28), and a spring can be wrapped between each two opposite buckle pieces (28). A collar (30) is sleeved on each axle pin (29), and the chain formed by the chain links (27) is respectively meshed and connected with a driven wheel (26) and a driving wheel (32), wherein the driven wheel (26) is rotatably connected to a fixed shaft (25) at its axis, and the fixed shaft (25) is fixedly connected to a panel (10), and the bottom of the panel (10) is fixedly connected to a cabinet (11), and the axis of the driving wheel (32) is fixedly connected to a moving shaft (33), and the moving shaft (33) is rotatably connected to the panel (10).

2. The automatic spring feeding mechanism according to claim 1, characterized in that: A plurality of slide rails (15) are evenly distributed and fixedly connected on one side of the surface of the panel (10) close to the driven wheel (26), the end of each slide rail (15) points between the corresponding two buckles (28), a slider (16) is slidably connected in each slide rail (15), a straight groove (17) is provided in the slide rail (15) and the panel (10), a sliding pin (18) slidably connected to the straight groove (17) is fixedly connected to the bottom side of each slider (16), the fixed shaft (25) passes through the bottom end of the panel (10) and is rotatably connected to a swing plate (19), an arc groove (20) is provided on the swing plate (19) at a position corresponding to each straight groove (17), and each arc groove (20) is slidably connected to the corresponding sliding pin (18).

3. The automatic spring feeding mechanism according to claim 2, characterized in that: The bottom side of the panel (10) is fixedly connected to a disc seat (21) that is rotatably connected to a sliding pin (18); one end of the swing disc (19) away from the sliding pin (18) is hinged to a first hinge (22); the bottom side of the panel (10) is fixedly connected to a second hinge (23) located on one side of the first hinge (22); and an electric drive cylinder (24) is fixedly connected between the rotating end of the second hinge (23) and the first hinge (22).

4. The automatic spring feeding mechanism according to claim 2, characterized in that: The cabinet (11) is fixedly connected to a support plate (12) at one end close to the driven wheel (26), and a clamping plate (14) is fixedly connected to the top of the support plate (12). A plurality of feeding tubes (13) are clamped and connected between the clamping plate (14) and the top of the support plate (12). The end of each feeding tube (13) close to the slide rail (15) is bent downward and extends into the corresponding slide rail (15), and the bottom end of the feeding tube (13) is tightly fitted with the corresponding slider (16) and slides relative to each other.

5. The automatic spring feeding mechanism according to claim 1, characterized in that: A rotation sensor (34) is fixedly connected to the bottom side of the panel (10) at a position corresponding to the dynamic shaft (33); a detection end of the rotation sensor (34) is transmission-connected to the bottom end of the dynamic shaft (33) passing through the panel (10); a motor base (35) is fixedly connected to the bottom side of the panel (10) at a position corresponding to the dynamic shaft (33); a motor (36) is fixedly connected to the bottom side of the motor base (35); a power output end of the motor (36) passes through the motor base (35) and is transmission-connected to the dynamic shaft (33).

6. The automatic spring feeding mechanism according to claim 2, characterized in that: A guide groove (31) is provided on the surface of the panel (10) at a corresponding position of the chain composed of the chain links (27), the bottom end of each of the shaft pins (29) extends into the guide groove (31) and is slidably connected to the guide groove (31), and each of the slide rails (15) is fixedly connected with an arc-shaped baffle (37) surrounding the outer side of the chain link (27) and the buckle (28).

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