Spring hook detection and correction device and method

Abstract

The invention provides a spring hook detection and correction device and method. The device comprises a rotating disc and a clamping device. The feeding device is used for feeding the spring hook to the clamping device; the initial detection device is used for jacking and pressing the spring hook short section and detecting whether the spring hook short section can be opened by pressing or not, whether the spring hook short section can be reset or not and whether the spring hook short section and the long section deviate or not; the correction device is used for correcting the bad spring hook detected by the initial detection device; the final detection device is used for carrying out secondary detection on the spring hook; and the discharging device is used for discharging the good products and the waste products separately. The spring hook detection and correction device is used for automatically detecting the assembled spring hook and performing targeted correction on the detected problems, so that the spring hook is detected and corrected in a full-automatic manner, the production efficiency is improved, the product quality is guaranteed, and the rejection rate is reduced.

Description

Technical Field

[0001] The present application relates to the field of spring hook production, and in particular to a spring hook detection and correction device and method. Background Art

[0002] Spring hooks are a common hardware product, widely used in carabiners, rope buckles, pet chains, key accessories, special-shaped chains, luggage buckles, connecting hooks, anti-skid chains and other products. Spring hooks are mostly gourd-shaped, with a C-shaped long section and a straight short section hinged into a closed loop by rivets. One end of the long section and the short section are hinged by rivets, and the other end is provided with grooves and protrusions, so that they can bite each other to achieve connection. After the spring hook is assembled, it is usually necessary to test the spring hook, including pressing the short section to see if it is easy to open, whether the short section can be reliably reset under the action of the spring or torsion spring, and whether the long section and the short section are offset to the left and right.

[0003] The patent number CN 202110286311.9 provides a spring hook inspection machine, including a hook inspection device for pressing the short section of the spring hook and a detection device for detecting the closure of the short section of the spring hook, so as to detect whether the short section returns to closure after the hook inspection piece is pressed, thereby realizing sorting and screening. The hook inspection machine only completes the basic screening, with a high scrap rate, and there are long sections and short sections in the scrap that are offset to the left and right; in addition, after the screening is completed, the problems of the spring hook still need to be repaired manually, which is troublesome, inefficient, subjective, and has high labor costs, so that the product quality cannot be guaranteed. Summary of the invention

[0004] The present application provides a spring hook detection and correction device and method, which are used to automatically detect the assembled spring hook and perform targeted corrections on the problems after detection, so as to fully automatically complete the detection and correction of the spring hook, improve production efficiency, ensure product quality, and reduce the scrap rate.

[0005] The present application provides a spring hook detection and correction device, comprising a rotating disk, a plurality of clamping devices arranged on the rotating disk for carrying the spring hooks; and further comprising: A feeding device, used for feeding the spring hook to the clamping device; An initial detection device, used to press the short section of the spring hook and detect whether the short section of the spring hook can be pressed open, whether it can be reset, and whether the short section of the spring hook is offset from the long section; A correction device, used for correcting the defective spring hook detected by the initial detection device; The final inspection device is used to conduct a secondary inspection on the spring hooks to distinguish good products from defective ones; The unloading device is used to separate good products from waste products and unload them to the good product storage device and the waste product storage device.

[0006] The loading device, initial detection device, correction device, final detection device and unloading device are all arranged corresponding to the clamping device on the rotating disk and the actions of each device are controlled by a PLC controller.

[0007] The offset described in this application refers to the left-right offset between the short section of the spring hook and the long section of the spring hook; the main reason why the short section of the spring hook cannot be opened after being pressed or cannot be reset after opening during the production and assembly process is that the protrusions and grooves of the short section and the long section are not fully engaged, resulting in an offset in the length direction of the spring hook.

[0008] The defective spring hook described in this application refers to a spring hook with the following problems: the short section cannot be opened after being pressed or cannot be reset after opening, and the short section and long section of the spring hook are offset to the left and right.

[0009] Furthermore, the feeding device comprises a feeding bracket, a spring hook receiving slot installed on the feeding bracket, a feeding drive and a feeding clamp connected thereto, the vibrating plate conveys the spring hook to the spring hook receiving slot via the guide plate, and the feeding clamp, driven by the feeding drive, clamps the spring hook from the spring hook receiving slot to the clamping device. The feeding drive can be composed of a plurality of cylinders, which can drive the feeding clamp to move away from or close to the clamping device, and drive the feeding clamp to clamp or release the spring hook, thereby realizing the feeding of the spring hook from the spring hook receiving slot to the clamping device on the rotating plate.

[0010] Furthermore, the initial detection device and the final detection device both include a detection bracket, a detection drive member installed on the detection bracket and a detection push rod connected thereto, a first sensor for detecting whether the short section can be pressed open and whether it can be reset, and a second sensor for detecting whether the short section and the long section of the spring hook are offset.

[0011] Furthermore, the detection drive member is installed on the upper end of the detection bracket and the lower end of the detection drive member is connected to a detection push rod for pressing the spring hook short section, the first sensor is installed on the detection bracket and located above the clamping device; the second sensor is connected to the detection bracket via the drive unit.

[0012] The detection drive is used to drive the detection push rod to move up and down so as to press the short section of the spring hook; the first sensor is installed on the detection bracket and located above the clamping device, and is used to detect whether the spring hook can be pressed to open and whether it can be reset; the drive unit can drive the second sensor to reciprocate linearly, so that when the second sensor is in the detection state, the drive unit with the second sensor extends to one side of the rotating disk clamping device, so that the second sensor is on the side of the spring hook to detect whether the short section and the long section are offset to the left and right; when the second sensor is in the non-detection state, the drive unit with the second sensor is retracted to the outside of the rotating disk to avoid hindering the rotation of the rotating disk. The drive unit can be a cylinder.

[0013] Further, the correction device includes a first correction device and a second correction device; the first correction device includes a first correction tool and a first rotating material transfer tool for hooking the spring between the clamping device and the first correction tool to transfer the material; the second correction device includes a second correction tool and a second rotating material transfer tool for hooking the spring between the clamping device and the second correction tool to transfer the material. The installation order of the first correction device and the second correction device is not specific.

[0014] Furthermore, the first rotary material transfer fixture and the second rotary material transfer fixture both include a rotary material transfer driving member and material transfer claws connected to both sides of the rotary material transfer driving member.

[0015] Furthermore, the first correction tooling includes a first spring hook correction groove, a first correction bracket, a first correction drive and a first correction push rod connected thereto for pressing the short section; the first correction tooling also includes an offset correction unit symmetrically arranged on the left and right, and the offset correction unit includes an offset correction bracket, an offset correction drive and an offset push rod connected thereto for pushing the short section according to the offset of the spring hook short section and the long section.

[0016] Furthermore, the second correction tooling includes a second spring hook correction groove, a second correction bracket, a second correction drive and a second correction pressing rod connected thereto for pressing the long section; the second correction tooling also includes a fixing rod for fixing one end of the spring hook and a first drive connected thereto for controlling the extension and retraction of the fixing rod, a stretching rod for stretching the other end of the spring hook and a second drive connected thereto for controlling the extension and retraction of the stretching rod, and a third drive for controlling the stretching rod to stretch the spring hook.

[0017] The rotary material transfer drive component can be composed of a plurality of cylinders, which are installed between the rotating disk and the correction tooling, and can rotate to drive the material transfer clamp to move away from or close to the clamping device, and drive the material transfer clamp to clamp or release the spring hook, thereby realizing material transfer between the clamping device on the rotating disk and the first spring hook correction groove or the second spring hook correction groove.

[0018] After the spring hook is moved to the first spring hook correction slot by the first rotary material transfer tool, the first correction driver drives the first correction push rod to press the short section several times; then, if the second sensor detects that the short section is offset to the left relative to the long section, the offset correction driver on the left drives the offset push rod on the left to push the short section to the right; if the second sensor detects that the short section is offset to the right relative to the long section, the offset correction driver on the right drives the offset push rod on the right to push the short section to the left, thereby achieving offset correction. After the offset correction is completed, the spring hook is moved to the clamping device on the rotating disk by the first rotary material transfer tool.

[0019] After the spring hook is moved to the second spring hook correction groove by the second rotary material transfer tool, first, the second correction driving member drives the second correction pressing rod to press the long section several times to promote the engagement of the groove and protrusion between the long section and the short section; secondly, the first driving member drives the fixing rod to extend to the inner side of one end of the spring hook to fix one end of the spring hook to prevent the spring hook from moving when the other end is stretched; the second driving member drives the stretching rod to extend to the inner side of the other end of the spring hook; then, the third driving member controls the stretching rod to move away from the fixing rod, thereby stretching the spring hook, further promoting the engagement of the groove and protrusion between the long section and the short section, and facilitating the short section to be pressed open and reset. After the correction is completed, the spring hook is moved to the clamping device on the rotating disk by the second rotary material transfer tool.

[0020] Furthermore, the unloading device includes an unloading bracket, a good product guide plate connected to the good product storage device, a waste material guide plate connected to the waste storage device, an unloading drive installed on the unloading bracket, and an unloading clamp connected thereto.

[0021] The unloading drive member can be composed of a plurality of cylinders, which can drive the unloading clamping jaws to move away from or close to the clamping device, and drive the unloading clamping jaws to clamp or release the spring hook, thereby unloading the spring hook from the clamping device on the rotating disk to the good product guide plate or the waste product guide plate.

[0022] The present application also provides a spring hook detection and correction method, comprising the following steps: Step 1: Load the spring hook to the clamping device on the rotating disk through the loading device; Step 2: The initial detection device performs an initial detection on the spring hook. If it is detected as a defective product, the process proceeds to step 3; if it is detected as a good product, the process proceeds to step 4. The detection content includes: whether the short section of the spring hook can be pressed open, whether it can be reset, and whether the short section of the spring hook is offset from the long section; Step 3: Correct the waste products detected by the initial detection device by using a correction device; the correction content includes: correcting the offset according to the offset of the short section and the long section of the spring hook, and stretching the two ends of the spring hook to promote the engagement of the grooves and protrusions on the long section and the short section; Step 4: The final inspection device performs a final inspection on the spring hook to further distinguish good products from defective products; Step 5: Use the unloading device to separate good products and waste products and unload them into the good product storage device and the waste product storage device.

[0023] In this method, the actions of the feeding device, the initial detection device, the correction device, the final detection device, and the unloading device are all controlled by the controller. Each driving member can be composed of a cylinder, and the PLC controller controls the cylinder action, which is a prior art and will not be described in detail here.

[0024] The embodiments of the present application provide a spring hook detection and correction device and method that can achieve the following beneficial effects: The present application can realize fully automated detection and correction of the spring hook, and detect the offset of the spring hook and the opening and resetting of the short section through the detection device; the offset between the long section and the short section is corrected in a targeted manner through the correction device, and the spring hook is stretched in the length direction to promote the engagement of the protrusions and grooves of the long section and the short section; the production efficiency is improved, the product quality is guaranteed, and the scrap rate is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings required for use in the embodiments or the prior art description are briefly introduced below. The drawings described here are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings: Figure 1 This is a schematic diagram of the spring hook in the open state; Figure 2 It is a schematic diagram of the closed state of the spring hook; Figure 3 This is a schematic diagram of the structure of the spring hook detection and correction device of the present application; Figure 4 This is a schematic diagram of the structure of the clamping device of this application; Figure 5 This is a schematic diagram of the structure of the feeding device of this application; Figure 6 This is a schematic diagram of the structure of the initial detection device of this application; Figure 7 This is a schematic diagram of the structure of the first rotary material transfer tooling of the present application; Figure 8 This is a schematic diagram of the structure of the first calibration tool of this application; Fig. 9 This is a schematic diagram of the structure of the second calibration tool of this application; Fig.10 This is a schematic diagram of the structure of the feeding device of this application.

[0026] Among them, 1. rotating disk, 2. clamping device; 3. feeding device, 31. feeding bracket, 32. spring hook receiving slot, 33. feeding driving member, 34. feeding clamping claw; 4. Initial detection device, 41. Detection bracket, 42. Detection drive member, 43. Detection push rod, 44. First sensor, 45. Second sensor, 46. Drive unit; 5. Correction device, 51. First correction device, 511. First correction tool, 512. First rotary material transfer tool, 5121. Rotary material transfer drive, 5122. Material transfer clamp, 5111. First spring hook correction slot, 5112. First correction bracket, 5113. First correction drive, 5114. First correction push rod, 5115. Offset correction bracket, 5116. Offset correction drive, 5117. Offset push rod; 52. second correction device, 521. second correction tool, 522. second rotary material transfer tool, 5211. second spring hook correction slot, 5212. second correction bracket, 5213. second correction drive member, 5214. second correction push rod, 5215. fixing rod, 5216. first drive member, 5217. stretching rod, 5218. second drive member, 5219. third drive member; 6. Final detection device, 7. unloading device, 71. unloading bracket, 72. good product guide plate, 73. waste product guide plate, 74. unloading drive member, 75. unloading clamp. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in combination with the specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0028] like Figure 1 , Figure 2 As shown, the spring hook includes a C-shaped long section and a straight short section. One end of the long section and the short section are hinged by a rivet, and the other end is provided with a groove and a protrusion, so that they bite each other to achieve connection.

[0029] like Figure 3 As shown, the present application provides a spring hook detection and correction device, comprising a rotating disk 1, six clamping devices 2 arranged on the rotating disk 1 for carrying the spring hook, and the clamping devices 2 are as shown in FIG. Figure 4As shown; also includes the following parts which are arranged in sequence around the rotating disk 1 in the circumferential direction: A feeding device 3, used for feeding the spring hook to the clamping device 2; An initial detection device 4 is used to press the short section of the spring hook and detect whether the short section of the spring hook can be pressed open, whether it can be reset, and whether the short section of the spring hook is offset from the long section; A correction device 5, used for correcting the defective spring hook detected by the initial detection device 4; The final inspection device 6 is used to conduct a secondary inspection on the spring hook to distinguish good products from defective products; The unloading device 7 is used to separate good products from waste products and unload them to the good product storage device and the waste product storage device.

[0030] like Figure 5 As shown, the feeding device 3 includes a feeding bracket 31, a spring hook receiving groove 32 installed on the feeding bracket 31, a feeding drive member 33 and a feeding clamp 34 connected thereto, the vibration plate transports the spring hook to the spring hook receiving groove 32 via the guide plate, and the feeding clamp 34, driven by the feeding drive member 33, clamps the spring hook from the spring hook receiving groove 32 to the clamping device 2.

[0031] like Figure 6 As shown, the initial detection device 4 and the final detection device 6 both include a detection bracket 41, a detection drive member 42 installed on the upper end of the detection bracket 41 and a detection push rod 43 connected to the lower end thereof for pressing the short section of the spring hook, a first sensor 44 installed on the detection bracket 41 and located above the clamping device 2 for detecting whether the short section can be pressed to open and whether it can be reset, and a second sensor 45 connected to the detection bracket 41 via a drive unit 46 for detecting whether the short section and the long section of the spring hook are offset.

[0032] like Figure 7 , Figure 8 , Fig. 9 As shown, the correction device 5 includes a first correction device 51 and a second correction device 52 respectively corresponding to a clamping device 2 on the rotating disk 1; the first correction device 51 includes a first correction tool 511 and a first rotating material transfer tool 512 for hooking the spring between the clamping device 2 and the first correction tool 511 for material transfer; the second correction device 52 includes a second correction tool 521 and a second rotating material transfer tool 522 for hooking the spring between the clamping device 2 and the second correction tool 521 for material transfer.

[0033] The first rotary material transfer fixture 512 and the second rotary material transfer fixture 522 both include a rotary material transfer driving member 5121 and material transfer clamps 5122 connected to both sides of the rotary material transfer driving member 5121 .

[0034] The first correction tool 511 includes a first spring hook correction groove 5111, a first correction bracket 5112, a first correction drive 5113 and a first correction push rod 5114 connected thereto for pressing the short section; the first correction tool 511 also includes an offset correction unit symmetrically arranged on the left and right, and the offset correction unit includes an offset correction bracket 5115, an offset correction drive 5116 and an offset push rod 5117 connected thereto for pushing the short section according to the offset of the spring hook short section and the long section.

[0035] The second correction tooling 521 includes a second spring hook correction slot 5211, a second correction bracket 5212, a second correction drive and a second correction pressing rod 5214 connected thereto for pressing the long section; the second correction tooling 521 also includes a fixing rod 5215 for fixing one end of the spring hook and a first driving member 5216 connected thereto for controlling the extension and retraction of the fixing rod 5215, a stretching rod 5217 for stretching the other end of the spring hook and a second driving member 5218 connected thereto for controlling the extension and retraction of the stretching rod 5217, and a third driving member 5219 for controlling the stretching rod 5217 to stretch the spring hook.

[0036] like Fig.10 As shown, the unloading device 7 includes an unloading bracket 71, a good product guide plate 72 connected to a good product storage device, a waste product guide plate 73 connected to a waste product storage device, an unloading drive 74 installed on the unloading bracket 71, and an unloading clamp 75 connected thereto.

[0037] It should be noted that the driving member proposed in this system can be composed of multiple cylinders, but the specific structure and connection relationship are not specifically limited, as long as the functions described in this device can be achieved. There is no limitation on the clamping jaws, clamping devices, and structures, as long as the functions described in this device can be achieved.

[0038] The present application also provides a spring hook detection and correction method, comprising the following steps: Step 1: Load the spring hook to the clamping device 2 on the rotating disk 1 through the loading device 3; Step 2: The initial detection device 4 performs an initial detection on the spring hook. If it is detected as a defective product, the process proceeds to step 3; if it is detected as a good product, the process proceeds to step 4. The detection content includes: whether the short section of the spring hook can be pressed to open, whether it can be reset, and whether the short section of the spring hook is offset from the long section; Step 3: Correct the waste detected by the initial detection device 4 by the correction device 5; the correction content includes: correcting the offset according to the offset of the short section and the long section of the spring hook, and stretching the two ends of the spring hook to promote the engagement of the grooves and protrusions on the long section and the short section; Step 4: The final inspection device 6 performs a final inspection on the spring hook to further distinguish good products from defective products; Step 5: Use the unloading device 7 to separate good products from bad products and unload them to the good product storage device and the bad product storage device.

[0039] It should be noted that the spring hook detection and correction method is implemented on the basis of a detection and correction device composed of a feeding device, an initial detection device, a correction device, a final detection device, and a feeding device. The driving member drives the clamping claw or the pressing rod or the pushing rod or the stretching rod or the fixing rod to realize the actions of clamping, pressing, pushing, stretching, etc. of the spring; the actions of each driving member are controlled by the PLC controller. Even if other additional functions are added to this device or the structure of the driving member is changed, the detection and correction method remains unchanged. However, this application only takes the example of the driving member driving other components, and does not limit other detection and correction devices that can realize the functions described in this application.

[0040] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0041] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A spring hook detection and correction device, comprising a rotating disk, and a plurality of clamping devices arranged on the rotating disk for carrying the spring hook; characterized in that: Also included are: A feeding device, used for feeding the spring hook to the clamping device; An initial detection device, used to press the short section of the spring hook and detect whether the short section of the spring hook can be pressed open, whether it can be reset, and whether the short section of the spring hook is offset from the long section; A correction device, used for correcting the defective spring hook detected by the initial detection device; The final inspection device is used to conduct a secondary inspection on the spring hooks to distinguish good products from defective ones; The unloading device is used to separate good products from waste products and unload them to the good product storage device and the waste product storage device.

2. The spring hook detection and correction device according to claim 1, characterized in that: The feeding device includes a feeding bracket, a spring hook accommodating groove installed on the feeding bracket, a feeding drive and a feeding clamp connected thereto. The vibration plate transports the spring hook to the spring hook accommodating groove via a guide plate. The feeding clamp, driven by the feeding drive, clamps the spring hook from the spring hook accommodating groove to the clamping device.

3. The spring hook detection and correction device according to claim 1, characterized in that: The initial detection device and the final detection device both include a detection bracket, a detection drive installed on the detection bracket and a detection push rod connected thereto, a first sensor for detecting whether the short section can be pressed open and whether it can be reset, and a second sensor for detecting whether the short section and the long section of the spring hook are offset.

4. The spring hook detection and correction device according to claim 3, characterized in that: The detection drive member is installed on the upper end of the detection bracket and the lower end of the detection drive member is connected to a detection push rod for pressing the spring hook short section. The first sensor is installed on the detection bracket and located above the clamping device; the second sensor is connected to the detection bracket via a drive unit.

5. The spring hook detection and correction device according to claim 1, characterized in that: The correction device includes a first correction device and a second correction device; the first correction device includes a first correction tool and a first rotating material transfer tool for moving the spring hook between the clamping device and the first correction tool; the second correction device includes a second correction tool and a second rotating material transfer tool for moving the spring hook between the clamping device and the second correction tool.

6. The spring hook detection and correction device according to claim 5, characterized in that: The first rotary material transfer fixture and the second rotary material transfer fixture both include a rotary material transfer driving member and material transfer clamps connected to both sides of the rotary material transfer driving member.

7. The spring hook detection and correction device according to claim 5, characterized in that: The first correction tool includes a first spring hook correction groove, a first correction bracket, a first correction drive and a first correction push rod connected thereto for pressing the short section; the first correction tool also includes an offset correction unit symmetrically arranged on the left and right, and the offset correction unit includes an offset correction bracket, an offset correction drive and an offset push rod connected thereto for pushing the short section according to the offset of the spring hook short section and the long section.

8. The spring hook detection and correction device according to claim 5, characterized in that: The second correction tooling includes a second spring hook correction groove, a second correction bracket, a second correction drive and a second correction pressing rod connected thereto for pressing the long section; the second correction tooling also includes a fixing rod for fixing one end of the spring hook and a first drive connected thereto for controlling the extension and retraction of the fixing rod, a stretching rod for stretching the other end of the spring hook and a second drive connected thereto for controlling the extension and retraction of the stretching rod, and a third drive for controlling the stretching rod to stretch the spring hook.

9. The spring hook detection and correction device according to claim 1, characterized in that: The unloading device comprises an unloading bracket, a good product guide plate connected to a good product storage device, a waste material guide plate connected to a waste product storage device, an unloading drive installed on the unloading bracket and an unloading clamp connected thereto.

10. The method for detecting and correcting the spring hook detection and correction device according to claim 1, characterized in that: The steps include: Step 1: Load the spring hook to the clamping device on the rotating disk through the loading device; Step 2: The initial detection device performs an initial detection on the spring hook. If it is detected as a defective product, the process proceeds to step 3; if it is detected as a good product, the process proceeds to step 4. The detection content includes: whether the short section of the spring hook can be pressed open, whether it can be reset, and whether the short section of the spring hook is offset from the long section; Step 3: Correct the waste products detected by the initial detection device by using a correction device; the correction content includes: correcting the offset according to the offset of the short section and the long section of the spring hook, and stretching the two ends of the spring hook to promote the engagement of the grooves and protrusions on the long section and the short section; Step 4: The final inspection device performs a final inspection on the spring hook to further distinguish good products from defective products; Step 5: Use the unloading device to separate good products from waste products and unload them into the good product storage device and the waste product storage device.

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