Automatic sleeve setting equipment for shaft spring protective cover

Abstract

The application relates to the technical field of spring processing equipment, in particular to automatic setting equipment for shaft spring protective covers, which comprises a support, a conveying device, a setting device, a heat shrinking device and a cutting device; the conveying device realizes stable transmission of the spring by cooperation of a conveying belt and a rotating shaft, and the spring is positioned by a fixing assembly; the setting device is composed of a material supporting assembly and a setting assembly, and can accurately set the protective cover into the spring; the heat shrinking device uniformly shrinks the protective cover by using a heating barrel; and the cutting device cooperatively works by a cutting assembly and a driving assembly to cut off the redundant protective cover material; the application realizes automatic assembly of the whole process of the shaft spring protective cover, improves the production efficiency and ensures the consistency of product quality.

Description

Technical Field

[0001] This application relates to the field of spring processing equipment technology, and in particular to an automatic sleeve fitting device for a shaft spring protective cover. Background Technology

[0002] The automated installation of spring protective covers is a crucial step in modern industrial production, particularly in protecting shaft parts after assembly with springs. It plays an irreplaceable role in this process. By adding protective covers to springs, physical damage or chemical corrosion during subsequent transportation and storage can be effectively prevented, ensuring product quality and enhancing market competitiveness. In recent years, as the manufacturing industry moves towards greater precision and efficiency, traditional manual operations have been gradually replaced by more automated machinery. This shift has not only significantly increased production line operating speed but also substantially reduced labor intensity and defect rates, bringing considerable economic benefits to enterprises.

[0003] For the protection needs of special workpieces like shaft springs, various solutions have been developed in practical applications. On the one hand, the traditional labor-intensive model still accounts for a certain proportion. This model usually relies on skilled technicians to use simple tools to complete a series of operations such as pre-opening, positioning, installation, and heat shrinking of the protective cover one by one. On the other hand, with the advancement of technology, more semi-automated auxiliary tools based on mechanical principles have emerged, such as devices that use pneumatic grippers to initially fix the springs, or conveyor belt systems driven by servo motors to transport the parts to be processed. In addition, some companies are trying to integrate different functional units to create small workstations with certain comprehensive capabilities, such as specialized equipment focused on a single task, such as softening and shaping thermoplastic materials, or dedicated cutting machines focusing on tail trimming work, etc.

[0004] While the aforementioned methods have alleviated manual labor pressure and improved working conditions to some extent, they still reveal numerous shortcomings from a holistic perspective. They are particularly inadequate when dealing with large-scale assembly line operations, primarily due to the following reasons: First, neither relying entirely on manual labor nor simply adding a few basic actions can achieve true seamless integration; there is a noticeable disconnect between the successful opening of the protective cover and the final product output. Second, while pursuing high-speed operation, quality control at every detail is neglected. For example, inaccurate initial positioning may trigger a chain reaction, leading to an increased scrap rate. Finally, and most importantly, there is a lack of a complete system to support the integrated operation of the entire process. This means that a continuous sequence of actions—smoothly unfolding the protective cover to accurately cover the target object's surface and immediately initiating the corresponding temperature control program to quickly adapt to its shape and remove excess material—cannot be completed simultaneously within a relatively compact space. Therefore, developing a more advanced and efficient fully automated shaft spring protective cover installation solution that overcomes the limitations of existing technology has become a crucial issue that urgently needs to be addressed. Summary of the Invention

[0005] To improve the load-bearing capacity of openings in load-bearing walls, this application provides an automatic sleeve installation device for shaft spring protective covers, employing the following technical solution:

[0006] An automatic sleeve fitting device for a shaft spring protective cover includes:

[0007] support;

[0008] The transport device includes:

[0009] A transport assembly for transporting springs, the transport assembly comprising: a conveyor belt and two rotating shafts, the rotating shafts being rotatably connected to the bracket, and the conveyor belt being sleeved on the rotating shafts;

[0010] A fixing component that secures the spring to the transport assembly, the fixing component being mounted on the conveyor belt;

[0011] A sleeve device, comprising: a support assembly located on one side of the transport assembly to open the protective cover, and a sleeve assembly located above the transport assembly to sleeve the opened protective cover onto a spring.

[0012] A heat shrinking device, comprising: a heat shrinking assembly installed above the transport component to heat shrink a protective cover fitted onto a spring;

[0013] The cutting device includes:

[0014] A cutting assembly for removing the excess protective covers from both ends of a heat-shrinked spring;

[0015] A drive assembly mounted on the bracket for moving the cutting assembly.

[0016] Furthermore, the fixing component includes:

[0017] A first mounting rod is coaxially and perpendicularly mounted on the outer surface of the conveyor belt;

[0018] The first guide rod has one end fixed to the first mounting rod and is perpendicular to the first mounting rod. Multiple first guide rods are provided and distributed circumferentially along the first mounting rod.

[0019] A first adjusting rod is provided, which is parallel to the first mounting rod. A limiting block is provided on the side of the first adjusting rod away from the first mounting rod. One end of the first adjusting rod slides elastically along the axis of the first guide rod on the first guide rod. In normal condition, the first adjusting rod tends to slide towards the side away from the first mounting rod. Each first guide rod is provided with a first adjusting rod.

[0020] Multiple fixed components are provided and distributed circumferentially along the conveyor belt.

[0021] Furthermore, the fixing component also includes:

[0022] The first unlocking disc and the first mounting rod are hollow rods. The peripheral wall of the first mounting rod is provided with a plurality of first clearance grooves through the first mounting rod axis. The first clearance grooves are connected to the inner cavity of the first mounting rod. The first unlocking disc is slidably connected to the inside of the first mounting rod on the same axis. Each first adjusting rod is connected to the first unlocking disc through the first clearance groove via a first connecting rod. The two ends of the first connecting rod are rotatably connected to the first unlocking disc and the first adjusting rod, respectively. The distance between the first unlocking disc and the surface of the conveyor belt is greater than the distance between the hinge point on the first connecting rod and the first adjusting rod and the surface of the conveyor belt.

[0023] The first unlocking rod is elastically slidably connected to the first mounting rod. In normal condition, one end of the first unlocking rod passes through the conveyor belt and is located between the two belt surfaces, while the other end is a certain distance away from the first unlocking disc. The circumferential wall of the rotating shaft is provided with an annular second clearance groove for the first unlocking rod to pass through.

[0024] A push rod is located between two belt surfaces and is inclined downward in the direction of movement of the lower belt surface. When the first unlocking rod moves with the conveyor belt to the lower belt surface, the end of the first unlocking rod away from the first unlocking disc abuts against it.

[0025] Furthermore, the support assembly includes:

[0026] A feeding plate, located on one side of the conveyor belt, is used to place stacked protective covers;

[0027] An adsorption component, comprising: a first driving component, wherein a plurality of adsorption strips are fixed on the output end of the first driving component, and the first driving component drives the adsorption strips to move in a vertical direction;

[0028] The adsorption element is provided in two symmetrically arranged, one above the other. The lower adsorption element is located between the feeding plate and the conveyor belt, and the first driving element is fixed to the bracket. The first driving element of the upper adsorption element is slidably connected to the bracket and is driven by a cylinder to reciprocate between the feeding plate and the lower adsorption element.

[0029] Furthermore, the sleeve component includes:

[0030] A first mounting base is located above the conveyor belt and is rotatably connected to the bracket. The rotation axis of the first mounting base and the bracket is parallel to the conveying direction of the conveyor belt. The bracket is provided with a second driving member that drives the first mounting base to rotate.

[0031] The second mounting rod is provided on the first mounting base, and the third driving member is used to drive the second mounting rod to slide in a direction perpendicular to the rotation axis of the first mounting base;

[0032] The mounting disc is coaxially fixed to the end of the second mounting rod away from the third driving member. Multiple sliding grooves are formed on the mounting disc along its meridian direction. A support rod is elastically slidably connected in each sliding groove. The support rod is located on the side of the mounting disc away from the second mounting rod and is perpendicular to the mounting disc. When the support rod is in normal state, it is located at the end of the sliding groove away from the axis of the second mounting rod.

[0033] The tensioning disc is a hollow rod, and the tensioning disc is slidably connected to the second mounting rod on the same axis. The second mounting rod has a second clearance groove on its periphery, which is the same number as the support rod. The support rod is connected to the tensioning disc through a second connecting rod. One end of the second connecting rod passes through the second clearance groove and is rotatably connected to the end of the support rod near the second mounting rod. The other end is rotatably connected to the tensioning disc.

[0034] The second unlocking rod passes coaxially through the mounting disc and is slidably connected to the mounting disc. One end of the second unlocking rod is located inside the second mounting rod, and the other end is located at the end of the mounting disc away from the first mounting rod. The end of the second unlocking rod away from the second mounting rod is provided with an abutment plate. The abutment plate is directly connected to the mounting disc through a gas spring. In normal operation, there is a distance between the second unlocking rod and the tensioning disc.

[0035] Furthermore, the sleeve component also includes:

[0036] A pull ring, wherein the pull ring is located on the side of the tensioning disc away from the mounting disc:

[0037] The stop lever is located between the first mounting base and the adsorption member. The middle part of the stop lever is elastically rotatably connected to the bracket. The rotation axis is parallel to the rotation axis of the first mounting base and the bracket. In normal state, the stop lever is in a vertical state. When the second driving member drives the normally normal support rod to rotate to a horizontal state, the stop lever is inserted into the pull ring.

[0038] A limiting rod is located on the side of the stop bar near the first mounting base and slides vertically on the bracket. When the limiting rod moves to the lowest end, the limiting rod and the stop bar abut against each other at a point above their rotation axis.

[0039] The third unlocking rod is fixed to the side of the limiting rod away from the first mounting base and is inclined downward in the direction away from the first mounting base. The third unlocking rod is elastically slidably connected to the bracket. Normally, the limiting rod abuts against the stop rod. When the stop rod is inserted into the pull ring, the mounting disc is located between the third unlocking rod and the stop rod. When the mounting disc moves toward the side away from the first mounting base, the mounting disc abuts against the third unlocking rod, causing the stop rod to move upward.

[0040] Furthermore, by adopting the above technical solution,

[0041] Optionally, the heat-shrinkable assembly includes:

[0042] A heating barrel is located above the conveyor belt with its opening facing downwards and its wall hollow. Multiple air vents are provided on the inner wall of the heating barrel, and a hot air blower is provided on the heating barrel to provide hot airflow to the hollow wall cavity of the heating barrel.

[0043] The fourth driving component is mounted on the bracket and is used to drive the heating barrel to move vertically.

[0044] Furthermore, the driving component includes:

[0045] The fifth driving component is fixedly mounted on the bracket;

[0046] An outer ring is located above the conveyor belt and is parallel to the surface of the conveyor belt. The fifth driving member drives the outer ring to move in a direction perpendicular to the surface of the conveyor belt.

[0047] The inner ring is coaxially rotatably connected to the inner wall of the outer ring. A gear ring is coaxially sleeved on the circumferential wall of the inner ring. A gear that meshes with the gear ring is provided on the outer ring. A motor that drives the gear to mesh is provided on the outer ring.

[0048] The cutting assembly is mounted on the inner ring.

[0049] Furthermore, the cutting component includes:

[0050] A mounting plate is mounted on the inner wall of the inner ring along the axis of the inner ring. The mounting plate is provided with a second mounting seat, and the second mounting seat is provided with a second guide rod. The second guide rod is arranged along the meridian of the inner ring, and the second guide rod elastically slides on the second mounting seat along the axis of the inner ring.

[0051] A cutting blade is mounted on a second guide rod and slides along the direction of the second guide rod. A sixth driving member is provided on the second guide rod to drive the cutting blade to move.

[0052] A guide ring is fixed to the outer ring. A through guide groove is provided on the peripheral wall of the guide ring along the inclined direction. When the second guide rod is in its normal state, it abuts against one end of the guide ring. A guide block is provided on the side of the guide ring where the second guide rod is in its normal state. The guide block is located at the guide groove to extend the guide groove toward the side wall of the inner ring in the direction of rotation.

[0053] The cutting assembly has two parts, which are symmetrically arranged along both ends of the outer ring. When the second guide rod is in its normal state, the distance between the two second guide rods is at its maximum.

[0054] In summary, this application includes at least one of the following beneficial technical effects:

[0055] 1. An automatic sleeve fitting device for a shaft spring protective cover is designed, which facilitates the positioning and conveying of the spring through a fixing component.

[0056] 2. An automatic sleeve-fitting device for a shaft spring protective cover is designed, which completes the sleeve-fitting of the protective cover by the cooperation of a material support component and a sleeve-fitting component.

[0057] 3. An automatic sleeve fitting device for axle spring protective covers is designed, which uses a cutting device to trim excess protective covers on the spring. Attached Figure Description

[0058] Figure 1 This is a schematic diagram of the overall structure of an automatic sleeve-fitting device for a shaft spring protective cover according to an embodiment of this application;

[0059] Figure 2 This is a partial structural schematic diagram of an automatic sleeve-fitting device for a shaft spring protective cover according to an embodiment of this application, intended to show the transport components and the fixing components;

[0060] Figure 3 This is a partial structural schematic diagram of an automatic sleeve mounting device for a shaft spring protective cover according to an embodiment of this application, intended to illustrate the fixing components;

[0061] Figure 4 This is a partial structural schematic diagram of an automatic sleeve-fitting device for a shaft spring protective cover according to an embodiment of this application, intended to show the material support assembly and part of the sleeve-fitting assembly;

[0062] Figure 5 This is a partial structural schematic diagram of an automatic sleeve-fitting device for a shaft spring protective cover according to an embodiment of this application, intended to demonstrate the sleeve-fitting components;

[0063] Figure 6 This is a partial structural schematic diagram of an automatic sleeve device for a shaft spring protective cover according to an embodiment of this application, which aims to demonstrate the process of the sleeve component opening the protective cover on the support component;

[0064] Figure 7 This is a partial structural schematic diagram of an automatic sleeve device for a shaft spring protective cover according to an embodiment of this application, intended to demonstrate the heat shrink assembly;

[0065] Figure 8 This is a partial structural schematic diagram of an automatic sleeve-fitting device for a shaft spring protective cover according to an embodiment of this application, intended to show the drive assembly and the cutting assembly;

[0066] Figure 9 This is a partial structural schematic diagram of an automatic sleeve-fitting device for a shaft spring protective cover according to an embodiment of this application, intended to demonstrate the cutting component.

[0067] Reference numerals: 01, Protective cover; 1, Bracket; 2, Transport assembly; 21, Conveyor belt; 22, Rotating shaft; 3, Fixing assembly; 31, First mounting rod; 32, First guide rod; 33, First adjusting rod; 34, First unlocking disc; 35, First unlocking rod; 36, Push rod; 37, First connecting rod; 4, Material support assembly; 41, Discharge plate; 42, Adsorption component; 421, First driving component; 422, Adsorption strip; 5, Sleeving assembly; 51, First mounting base; 52, Second mounting rod; 53, Mounting disc; 54, Tensioning disc; 541, Support rod; 542. Second connecting rod; 543, pull ring; 55, second unlocking rod; 551, abutment plate; 552, gas spring; 56, second driving component; 57, third driving component; 58, stop bar; 59, limit bar; 591, third unlocking rod; 6, heat shrink assembly; 61, heating barrel; 62, fourth driving component; 7, cutting assembly; 71, mounting plate; 72, cutting blade; 73, guide ring; 74, second mounting base; 75, second guide rod; 76, sixth driving component; 77, guide groove; 78, guide block; 8, driving assembly; 81, fifth driving component; 82, outer ring; 83, inner ring. Detailed Implementation

[0068] The following is in conjunction with the appendix Figure 1-9 This application will be described in further detail.

[0069] This application discloses an automatic sleeve-fitting device for a shaft spring protective cover.

[0070] Reference Figure 1 and Figure 2 An automatic spring protective cover fitting device includes a support 1, a transport device, a fitting device, a heat shrinking device, and a cutting device. The transport device includes a transport component 2 for transporting the spring. The transport component 2 includes a conveyor belt 21 and two rotating shafts 22. The rotating shafts 22 are rotatably connected to the support 1. The conveyor belt 21 is fitted onto the rotating shafts 22. In this application, the conveyor belt 21 is placed horizontally. A fixing component 3 is used to fix the spring onto the transport component 2. The fixing component 3 is installed on the conveyor belt 21.

[0071] The sleeve device includes: a support assembly 4 located on one side of the transport assembly 2 to open the protective cover, and a sleeve assembly 5 located above the transport assembly 2 to sleeve the opened protective cover onto the spring.

[0072] The heat shrinking device includes: a heat shrinking assembly 6 installed above the transport assembly 2 to heat shrink the protective cover fitted on the spring;

[0073] The cutting device includes:

[0074] Cutting component 7 is used to remove the excess protective covers at both ends of the heat-shrinked spring.

[0075] A drive assembly 8 mounted on the bracket 1 to drive the cutting assembly 7 to move;

[0076] Personnel place the spring on the fixing component 3. The conveyor belt 21 transports the fixing component 3 with the spring to the sleeve component 5. After the support component 4 opens the protective cover, the sleeve component 5 opens the protective cover again and sleeves it on the spring. Then, the conveyor belt 21 transports the spring with the protective cover to the heat shrink component 6 to heat shrink the protective cover. After heat shrinking, it is transported to the cutting device. The drive component 8 drives the cutting component 7 to cut off the excess protective cover at both ends of the spring.

[0077] Reference Figure 1 , Figure 2 and Figure 3 The fixing component 3 includes a first mounting rod 31, a first guide rod 32, and a first adjusting rod 33. The first mounting rod 31 is coaxially and vertically mounted on the outer surface of the conveyor belt 21. One end of the first guide rod 32 is fixed to the first mounting rod 31 and is perpendicular to the first mounting rod 31. Multiple first guide rods 32 are provided and distributed circumferentially along the first mounting rod 31. The first adjusting rod 33 is arranged parallel to the first mounting rod 31, and a limiting block is provided on the side of the first adjusting rod 33 away from the first mounting rod 31. One end of the first adjusting rod 33 elastically slides on the first guide rod 32 along the axial direction of the first guide rod 32. In normal condition, the first adjusting rod 33 tends to slide towards the side away from the first mounting rod 31. Each first guide rod 32 is provided with a first adjusting rod 33. Multiple fixing components 3 are provided and distributed circumferentially along the conveyor belt 21.

[0078] Thus, the multiple first adjusting rods 33 form a cylindrical shape. When fixing the spring, the operator only needs to put the spring on the outside of the multiple first adjusting rods 33 at one end of the conveyor belt 21. The first adjusting rods 33 abut against the inside of the spring according to their own elasticity, and the bottom of the spring abuts against the limiting block, thereby fixing the spring to the fixing component 3.

[0079] Reference Figure 3 In order to facilitate personnel to put the spring on the first adjusting rod 33, in this application, the end of the adjusting rod away from the conveyor belt 21 is bent toward the mounting column, so as to facilitate personnel to directly put the spring on.

[0080] Reference Figure 2 and Figure 3To facilitate personnel adjustment of the position of the first adjusting rod 33 and automatic removal of the spring from the fixing assembly 3, the fixing assembly 3 also includes a first unlocking disc 34, a first unlocking rod 35, and a push rod 36. The first mounting rod 31 is a hollow rod, and multiple first clearance grooves are formed through the peripheral wall of the first mounting rod 31 along its axis. The first clearance grooves communicate with the inner cavity of the first mounting rod 31. The first unlocking disc 34 is slidably connected to the inside of the first mounting rod 31 on the same axis. Each first adjusting rod 33 is connected to the first unlocking disc 34 through the first clearance groove via a first connecting rod 37. The two ends of the first connecting rod 37 are rotatably connected to the first unlocking disc 34 and the first adjusting rod 33, respectively. The distance between the locking disc 34 and the surface of the conveyor belt 21 is greater than the distance between the hinge point on the first connecting rod 37 and the first adjusting rod 33 and the surface of the conveyor belt 21; the first unlocking rod 35 is elastically slidably connected to the first mounting rod 31. In normal condition, one end of the first unlocking rod 35 passes through the conveyor belt 21 and is located between the two belt surfaces, while the other end is a certain distance away from the first unlocking disc 34. The circumferential wall of the rotating shaft 22 is provided with an annular second clearance groove for the first unlocking rod 35 to pass through; the push rod 36 is located between the two belt surfaces and is inclined downward in the direction of movement of the lower belt surface. When the first unlocking rod 35 moves with the conveyor belt 21 to the lower belt surface, the end of the first unlocking rod 35 away from the first unlocking disc 34 abuts against it;

[0081] Thus, when the conveyor belt 21 moves the spring with the protective cover already processed to below the conveyor belt 21, the first unlocking rod 35 abuts against the push rod 36, forcing the first unlocking rod 35 to move upward and push the first unlocking disc 34 to move. The first unlocking disc 34 drives the first adjusting rod 33 to move towards the first mounting rod 31, at which point the spring falls off the fixing component 3.

[0082] Reference Figure 1 and Figure 4 The material support assembly 4 includes a feeding plate 41 and an adsorption component 42. The feeding plate 41 is located on one side of the conveyor belt 21 and is used to place stacked protective covers. The adsorption component 42 includes a first driving component 421. Multiple adsorption strips 422 are fixed on the output end of the first driving component 421. In this application, the adsorption strips 422 can be set as pneumatic adsorption plates. The first driving component 421 is a cylinder. The first driving component 421 drives the adsorption strips 422 to move in the vertical direction. There are two adsorption components 42, which are symmetrically arranged above and below. The adsorption component 42 located on the lower side is located between the feeding plate 41 and the conveyor belt 21. The first driving component 421 of the adsorption component 42 located on the upper side is slidably connected to the bracket 1. The first driving component 421 is driven by the cylinder to reciprocate between the feeding plate 41 and the lower adsorption component 42.

[0083] Thus, after the upper adsorption member 42 is moved above the discharge plate 41 by the cylinder, the first driving member 421 drives the adsorption strip 422 to adsorb the protective cover. Then, the first driving member 421 moves the adsorbed protective cover to directly above the lower adsorption member 42. The upper adsorption strip 422 moves down, so that the lower adsorption strip 422 adsorbs the protective cover. Through the cooperation of the upper and lower first driving members 421, the protective cover is initially opened, waiting for the sleeve assembly 5 to remove the initially opened protective cover.

[0084] Reference Figure 1 , Figure 4 , Figure 5 and Figure 6 The mounting assembly 5 includes a first mounting base 51, a second mounting rod 52, a mounting disc 53, a tensioning disc 54, and a second unlocking rod 55. The first mounting base 51 is located above the conveyor belt 21 and is rotatably connected to the bracket 1. The rotation axis of the first mounting base 51 and the bracket 1 is parallel to the conveying direction of the conveyor belt 21. The bracket 1 is provided with a second driving member 56 that drives the first mounting base 51 to rotate. In this application, the second driving member 56 is a motor. The first mounting base 51 is provided with a third driving member 57, which drives the second mounting rod 52 to slide in a direction perpendicular to the rotation axis of the first mounting base 51. In this application, the third driving member 57 is a cylinder. The mounting disc 53 is coaxially fixed to the end of the second mounting rod 52 away from the third driving member 57. Multiple grooves are opened on the mounting disc 53 along its meridian direction. A support rod 541 is elastically slidably connected in each groove. The support rod 541 is located on the side of the mounting disc 53 away from the second mounting rod 52 and is perpendicular to the mounting disc 53. In its normal state, the support rod 541 is located at the end of the slide groove away from the axis of the second mounting rod 52. The second mounting rod 52 is a hollow rod, and the tensioning disc 54 is slidably connected to the second mounting rod 52 coaxially. The second mounting rod 52 has a number of second clearance slots on its circumference, the same as the number of support rods 541. The support rod 541 and the tensioning disc 54 are connected by a second connecting rod 542. One end of the second connecting rod 542 passes through the second clearance slot and is rotatably connected to the end of the support rod 541 near the second mounting rod 52, while the other end is connected to... The tensioning disc 54 is rotatably connected; the second unlocking rod 55 coaxially passes through the mounting disc 53 and is slidably connected to the mounting disc 53. One end of the second unlocking rod 55 is located inside the second mounting rod 52, and the other end is located at the end of the mounting disc 53 away from the second mounting rod 52. The end of the second unlocking rod 55 away from the second mounting rod 52 is provided with an abutment plate 551. The abutment plate 551 is directly connected to the mounting disc 53 through a gas spring 552. In normal conditions, there is a distance between the second unlocking rod 55 and the tensioning disc 54.

[0085] Thus, the first driving component 421 drives the mounting base to rotate, so that the second mounting rod 52 is horizontally facing one side of the feeding plate 41. Then, the first driving component 421 drives the mounting disc 53 to move towards the initially opened protective cover. During the movement, the personnel control the tensioning disc 54 to move. The tensioning disc 54 drives the support rod 541 to retract as a whole through the second connecting rod 542, so that the initially opened protective cover is fitted on the outside of the multiple support rods 541. Then, the tensioning disc 54 is released, and under the elastic action of the support rod 541 itself, the protective cover is opened again. Note that the end of the support rod 541 away from the second mounting rod 52 cannot be completely extended out of the protective cover, leaving part of the opened protective cover.

[0086] Subsequently, the second drive component 56 drives the mounting disc 53 to retract, and the first drive component 421 drives the rotating seat to rotate, moving the protective cover above the conveyor belt 21. When the fixing assembly 3 with the fixed spring moves directly below the mounting disc 53, the second drive component 56 drives the mounting disc 53 to move downward. When the support rod 541 moves to the periphery of the spring, the first mounting rod 31 abuts against the abutment plate 551. The abutment plate 551 moves, causing the second unlocking rod 55 to abut against the tensioning disc 54, causing the tensioning disc 54 to move. The tensioning disc 54 causes the support rod 541 to retract inward. At this point, due to the elasticity of the protective cover itself, it begins to adhere to the spring. Since a portion of the protective cover remains at the end of the support rod 541 away from the second mounting rod 52, the protective cover located outside the support rod 541 first adheres to the spring. Subsequently, the second driving member 56 drives the support rod 541 to move upward. Due to the action of the gas spring 552, the support rod 541 cannot quickly return to its normal state by its own elasticity. Therefore, during the movement of the support rod 541, the protective cover detaches from the support rod 541 and adheres to the spring, thus completing the installation of the protective cover.

[0087] Furthermore, to facilitate the detachment of the protective cover from the support rod 541, the support rod 541 can be made of a material with a low coefficient of friction with plastics, such as ultra-high molecular weight polyethylene.

[0088] Reference Figure 1 , Figure 4 and Figure 6 In order to automatically adjust the position of the tensioning disc 54 during the process of opening the protective cover by the sleeve assembly 5, the sleeve assembly 5 also includes a pull ring 543, a stop bar 58, a limit bar 59, and a third unlocking bar 591. The pull ring 543 is located on the side of the tensioning disc 54 away from the mounting disc 53.

[0089] The stop lever 58 is located between the first mounting base 51 and the adsorption member 42. The middle part of the stop lever 58 is elastically rotatably connected to the bracket 1. The rotation axis is parallel to the rotation axis of the first mounting base 51 and the bracket 1. In normal state, the stop lever 58 is in a vertical state. When the second driving member 56 drives the normally normal support rod 541 to rotate to a horizontal state, the stop lever 58 is inserted into the pull ring 543.

[0090] The limiting rod 59 is located on the side of the stop rod 58 near the first mounting base 51 and slides vertically on the bracket 1. When the limiting rod 59 moves to the lowest end, the limiting rod 59 and the stop rod 58 abut against each other at a point above their rotation axis.

[0091] The third unlocking rod 591 is fixed on the side of the limiting rod 59 away from the first mounting base 51, and is inclined downward in the direction of the limiting rod 59 away from the first mounting base 51. The third unlocking rod 591 is elastically slidably connected to the bracket 1. Normally, the limiting rod 59 abuts against the stop rod 58. When the stop rod 58 is inserted into the pull ring 543, the mounting disc 53 is located between the third unlocking rod 591 and the stop rod 58. When the mounting disc 53 moves toward the side away from the first mounting base 51, the mounting disc 53 abuts against the third unlocking rod 591, causing the stop rod 58 to move upward.

[0092] Therefore, during the process of fitting the protective cover onto the support rod 541:

[0093] First, during the rotation of the first mounting base 51, the stop lever 58 is inserted into the pull ring 543. Then, the third driving component 57 drives the mounting rod to move. At this time, due to the action of the limiting rod 59, the rotation of the stop lever 58 is restricted. The stop lever 58 keeps the pull ring 543 stationary, and the pull ring 543 keeps the tensioning disc 54 stationary. Therefore, during the movement of the mounting disc 53, the second connecting rod 542 causes the support rod 541 to retract towards the center. When the support rod 541 is about to move to the target position;

[0094] The mounting disc 53 abuts against the third unlocking rod 591, causing the limiting rod 59 to move upward until it disengages from the stop lever 58. At this point, the support rod 541 opens under its own elasticity, and the pull ring 543 causes the stop lever 58 to deflect, disengaging from the stop lever 58.

[0095] Finally, during the process of the third driving component 57 driving the mounting rod to retract, the third unlocking rod 591 returns to its initial state, the stop lever 58 also returns to its initial state, and when the pull ring 543 abuts against the stop lever 58, it will not cause any obstruction due to the elastic rotation connection of the stop lever 58 itself.

[0096] In this way, the automated retractable support rod 541 is completed.

[0097] Reference Figure 1 and Figure 7The heat shrink assembly 6 includes a heating barrel 61 and a fourth driving component 62. The heating barrel 61 is located above the conveyor belt 21 with its opening facing downwards and its barrel wall is hollow. Multiple air vents are provided on the inner wall of the heating barrel 61. A hot air blower is provided on the heating barrel 61 to provide hot airflow to the cavity of the barrel wall. The fourth driving component 62 is mounted on the bracket 1 and is used to drive the heating barrel 61 to move vertically. In this application, the fourth driving component 62 is a cylinder.

[0098] Thus, when the spring with the protective cover in place moves to below the heating barrel 61, the fourth driving component 62 drives the heating barrel 61 to be placed around the spring. At the same time, the hot air blower works, blowing hot air into the heating barrel 61. The hot air blows from the air outlet onto the surface of the protective cover, causing it to contract and fit the spring more closely.

[0099] Reference Figure 1 and Figure 8 The drive assembly 8 includes a fifth drive member 81, an outer ring 82, and a cylinder. The fifth drive member 81 is fixedly mounted on the bracket 1. The outer ring 82 is located above the conveyor belt 21 and is parallel to the surface of the conveyor belt 21. The fifth drive member 81 drives the outer ring 82 to move in a direction perpendicular to the surface of the conveyor belt 21. The inner ring 83 is coaxially rotatably connected to the inner wall of the outer ring 82. A gear ring is coaxially sleeved on the periphery of the inner ring 83. The outer ring 82 is provided with a gear that meshes with the gear ring. The outer ring 82 is provided with a motor that drives the gear to mesh. The cutting assembly 7 is mounted on the inner ring 83.

[0100] Thus, when the spring moves to the position directly below the outer ring 82 after heat shrinking, the fifth driving component 81 drives the outer ring 82 to move downwards and fit on the outside of the spring. Subsequently, the motor drives the gear to rotate, the gear drives the gear ring to rotate, the gear ring drives the inner ring 83 to rotate, and the inner ring 83 drives the cutting component 7 to cut off the excess protective covers at both ends of the spring.

[0101] Reference Figure 1 , Figure 8 and Figure 9In this application, since the cut-off protective cover is located at both ends of the spring, if only a simple circumferential cut is made, the waste material of the cut protective cover will be trapped on the fixing component 3, making it inconvenient for personnel to remove. Therefore, in order to facilitate the removal of the cut protective cover, the cutting component 7 includes a mounting plate 71, a cutting blade 72, and a guide ring 73. The mounting plate 71 is mounted on the inner wall of the inner ring 83 along the axial direction of the inner ring 83. The mounting plate 71 is provided with a second mounting seat 74, and the second mounting seat 74 is provided with a second guide rod 75. The second guide rod 75 is arranged along the meridian direction of the inner ring 83, and the second guide rod 75 is along the axial direction of the inner ring 83 on the second mounting seat 74. The cutting blade 72 slides along the direction of the second guide rod 75 on the second guide rod 75. The second guide rod 75 is provided with a sixth driving member 76 that drives the cutting blade 72 to move. In this application, the sixth driving member 76 is a cylinder. The guide ring 73 is fixed to the outer ring 82. A through guide groove 77 is opened on the peripheral wall of the guide ring 73 along the inclined direction. When the second guide rod 75 is in normal state, it abuts against one end of the guide ring 73. The guide ring 73 is provided with a guide block 78 on the side of the second guide rod 75 that is in normal state. The guide block 78 is located at the guide groove 77 to extend the side wall of the guide groove 77 toward the rotation direction of the inner ring 83.

[0102] Two cutting components 7 are provided, symmetrically arranged at both ends of the outer ring 82. When the second guide rod 75 is in the normal state, the distance between the two second guide rods 75 is at its maximum.

[0103] Thus, when the outer ring 82 moves to the outside of the spring, the two cutting blades 72 are located at both ends of the spring, and at this time, the ends of the two guide rings 73 that are far apart from each other are located at both ends of the protective cover, and the ends that are close to each other are the required cutting positions. The sixth driving member 76 drives the cutting blade 72 to extend to a position that can contact the protective cover. Then the motor drives the inner ring 83 to rotate, and the inner ring 83 drives the mounting plate 71 to rotate. During the rotation of the mounting plate 71, the second guide rod 75 slides on the end wall of the guide ring 73. When it abuts against the guide block 78, the second guide rod 75 abuts against the groove surface of the guide groove 77, forcing the second guide rod 75 to move along the guide groove 77 to the end of the guide ring 73 that is close to the other guide ring 73. During this process, the cutting blade 72 cuts into the protective cover from both ends.

[0104] Subsequently, the inner ring 83 continues to rotate, and the cutting blade 72 slides along the end of the guide ring 73 away from the guide block 78 to complete the annular cut. Then, at the guide groove 77, the inner ring 83 rotates in the opposite direction, and the second guide rod 75 slides automatically into the guide groove 77 according to its own elastic shape, moving from one end of the guide ring 73 to the other end, thus completing the cut and severing the annular protective cover, which then falls directly from the spring.

[0105] To save on manpower, a fan is installed on one side of conveyor belt 21 to blow off the protective cover that is to be cut off.

[0106] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An automatic sleeve-fitting device for a shaft spring protective cover, characterized in that, include: Frame (1); A transport device, comprising: a transport assembly (2) for transporting springs, the transport assembly (2) comprising: a conveyor belt (21) and two rotating shafts (22), the rotating shafts (22) being rotatably connected to the bracket (1), the conveyor belt (21) being sleeved on the rotating shafts (22); a fixing assembly (3) for fixing springs to the transport assembly (2), the fixing assembly (3) being mounted on the conveyor belt (21), the fixing assembly (3) comprising: a first mounting rod (31), the first mounting rod (31) being coaxially and vertically mounted on the outer surface of the conveyor belt (21); and a sleeve device, the sleeve device comprising: located on the The conveyor assembly (2) includes a support assembly (4) that opens the protective cover on one side, and a sleeve assembly (5) located above the conveyor assembly (2) that sleeves the opened protective cover onto a spring. The sleeve assembly (5) includes: a first mounting base (51) located above the conveyor belt (21) and rotatably connected to the bracket (1). The rotation axis of the first mounting base (51) and the bracket (1) is parallel to the conveying direction of the conveyor belt (21). The bracket (1) is provided with a second driving member (56) that drives the first mounting base (51) to rotate. The bracket (1) is provided with a second driving member (56) that drives the first mounting base (51) to rotate. The first mounting base (51) is provided with a second driving member (56). The first mounting base (51) is provided with a second driving member (56). The system comprises three driving components (57), which drive the second mounting rod (52) to slide along a direction perpendicular to the rotation axis of the first mounting base (51); and a mounting disc (53), which is coaxially fixed to the end of the second mounting rod (52) away from the third driving component (57). The mounting disc (53) has multiple grooves along its meridian direction, and a support rod (541) is elastically slidably connected in each groove. The support rod (541) is located on the side of the mounting disc (53) away from the second mounting rod (52) and is perpendicular to the mounting disc (53). In its normal state, the support rod (541)... Located at one end of the slide groove away from the axis of the second mounting rod (52); tensioning disc (54), the second mounting rod (52) is a hollow rod, the tensioning disc (54) is coaxially slidably connected inside the second mounting rod (52), the second mounting rod (52) has a second clearance groove on its periphery that is the same number as the support rod (541), the support rod (541) and the tensioning disc (54) are connected by a second connecting rod (542), one end of the second connecting rod (542) passes through the second clearance groove and is rotatably connected to one end of the support rod (541) near the second mounting rod (52), and the other end is rotatably connected to the tensioning disc (54);The second unlocking rod (55) coaxially passes through the mounting disc (53) and is slidably connected to the mounting disc (53). One end of the second unlocking rod (55) is located inside the second mounting rod (52), and the other end is located at the end of the mounting disc (53) away from the first mounting rod (31). The end of the second unlocking rod (55) away from the second mounting rod (52) is provided with an abutment plate (551), and the abutment plate (551) directly connects with the mounting disc (53). A gas spring (552) is connected. In normal operation, there is a distance between the second unlocking rod (55) and the tensioning disc (54). A heat-shrinking device is included, comprising: a heat-shrinking assembly (6) installed above the transport assembly (2) to heat-shrink the protective cover fitted onto the spring; a cutting device is included, comprising: a cutting assembly (7) to cut off the excess protective cover at both ends of the heat-shrinked spring; and a drive assembly (8) installed on the bracket (1) to move the cutting assembly (7).

2. The automatic sleeve-fitting device for a shaft spring protective cover according to claim 1, characterized in that, The fixing component (3) further includes: a first guide rod (32), one end of which is fixed to the first mounting rod (31) and perpendicular to the first mounting rod (31); multiple first guide rods (32) are provided and distributed circumferentially along the first mounting rod (31); a first adjusting rod (33), which is parallel to the first mounting rod (31); a limiting block is provided on the side of the first adjusting rod (33) away from the first mounting rod (31); one end of the first adjusting rod (33) elastically slides on the first guide rod (32) along the axis of the first guide rod (32); under normal conditions, the first adjusting rod (33) tends to slide towards the side away from the first mounting rod (31); each first guide rod (32) is provided with a first adjusting rod (33); multiple fixing components (3) are provided and distributed circumferentially along the conveyor belt (21).

3. The automatic sleeve-fitting device for a shaft spring protective cover according to claim 2, characterized in that, The fixing component (3) further includes: a first unlocking disc (34), the first mounting rod (31) being a hollow rod, the peripheral wall of the first mounting rod (31) having a plurality of first clearance grooves extending through it along the axis of the first mounting rod (31), the first clearance grooves communicating with the inner cavity of the first mounting rod (31), the first unlocking disc (34) being coaxially slidably connected to the inside of the first mounting rod (31), each of the first adjusting rods (33) being connected to the first unlocking disc (34) through the first clearance groove via a first connecting rod (37), the two ends of the first connecting rod (37) being rotatably connected to the first unlocking disc (34) and the first adjusting rod (33) respectively, the distance between the first unlocking disc (34) and the surface of the conveyor belt (21) being greater than the distance between the first connecting rod (37) and the first... The distance between the hinge point on the adjusting rod (33) and the surface of the conveyor belt (21); the first unlocking rod (35), which is elastically slidably connected to the first mounting rod (31). In normal condition, one end of the first unlocking rod (35) passes through the conveyor belt (21) and is located between the two belt surfaces, while the other end is a certain distance from the first unlocking disc (34). The circumferential wall of the rotating shaft (22) is provided with an annular second clearance groove for the first unlocking rod (35) to pass through; the push rod (36), which is located between the two belt surfaces and is inclined downward in the direction of movement of the lower belt surface. When the first unlocking rod (35) moves with the conveyor belt (21) to the lower belt surface, the end of the first unlocking rod (35) away from the first unlocking disc (34) abuts against it.

4. The automatic sleeve-fitting device for a shaft spring protective cover according to claim 1, characterized in that, The material support assembly (4) includes: a feeding plate (41), which is located on one side of the conveyor belt (21) and is used to place stacked protective covers; an adsorption component (42), which includes: a first driving component (421), which has multiple adsorption strips (422) fixed on its output end, which drives the adsorption strips (422) to move vertically; there are two adsorption components (42), which are arranged symmetrically above and below, wherein the adsorption component (42) located on the lower side is located between the feeding plate (41) and the conveyor belt (21), and the first driving component (421) is fixed to the bracket (1); the first driving component (421) of the adsorption component (42) located on the upper side is slidably connected to the bracket (1), and the first driving component (421) is driven by a cylinder to reciprocate between the feeding plate (41) and the lower adsorption component (42).

5. The automatic sleeve-fitting device for a shaft spring protective cover according to claim 4, characterized in that, The sleeve assembly (5) further includes: a pull ring (543), which is located on the side of the tensioning disc (54) away from the mounting disc (53); a stop bar (58), which is located between the first mounting base (51) and the adsorption member (42), and the middle part of the stop bar (58) is elastically rotatably connected to the bracket (1), with the rotation axis parallel to the rotation axis of the first mounting base (51) and the bracket (1). Normally, the stop bar (58) is in a vertical state. When the second driving member (56) drives the normally normal support rod (541) to rotate to a horizontal state, the stop bar (58) is inserted into the pull ring (543); and a limiting rod (59), which is located on the side of the stop bar (58) close to the first mounting base (51) and slides vertically on the bracket (1). The limiting rod (59) moves to At its lowest point, the limiting rod (59) and the stop rod (58) are in contact above their rotation axis; the third unlocking rod (591) is fixed on the side of the limiting rod (59) away from the first mounting seat (51), and is inclined downward in the direction of the limiting rod (59) away from the first mounting seat (51). The third unlocking rod (591) is elastically slidably connected to the bracket (1). Normally, the limiting rod (59) and the stop rod (58) are in contact. When the stop rod (58) is inserted into the pull ring (543), the mounting disc (53) is located between the third unlocking rod (591) and the stop rod (58). When the mounting disc (53) moves toward the side away from the first mounting seat (51), the mounting disc (53) and the third unlocking rod (591) are in contact, causing the stop rod (58) to move upward.

6. The automatic sleeve-fitting device for a shaft spring protective cover according to claim 1, characterized in that, The heat shrink assembly (6) includes: a heating barrel (61), which is located above the conveyor belt (21), with the barrel opening facing downwards and the barrel wall hollow. The inner wall of the heating barrel (61) has multiple air outlets, and the heating barrel (61) is equipped with a hot air blower that provides hot airflow to the cavity of the barrel wall; and a fourth driving component (62), which is mounted on the bracket (1) and is used to drive the heating barrel (61) to move vertically.

7. The automatic sleeve-fitting device for a shaft spring protective cover according to claim 1, characterized in that, The drive assembly (8) includes: a fifth drive member (81), which is fixedly mounted on the bracket (1); an outer ring (82), which is located above the conveyor belt (21) and parallel to the surface of the conveyor belt (21), and the fifth drive member (81) drives the outer ring (82) to move in a direction perpendicular to the surface of the conveyor belt (21); an inner ring (83), which is coaxially rotatably connected to the inner wall of the outer ring (82), and a gear ring is coaxially sleeved on the periphery of the inner ring (83), and a gear meshing with the gear ring is provided on the outer ring (82), and a motor that drives the gear to mesh is provided on the outer ring (82); and the cutting assembly (7) is mounted on the inner ring (83).

8. The automatic sleeve-fitting device for a shaft spring protective cover according to claim 7, characterized in that, The cutting assembly (7) includes: a mounting plate (71), which is mounted on the inner wall of the inner ring (83) along the axial direction of the inner ring (83), and a second mounting seat (74) is provided on the mounting plate (71). A second guide rod (75) is provided on the second mounting seat (74), which is arranged along the meridian direction of the inner ring (83) and elastically slides on the second mounting seat (74) along the axial direction of the inner ring (83); and a cutting blade (72), which slides on the second guide rod (75) along the direction of the second guide rod (75). A sixth drive mechanism is provided on the second guide rod (75) to drive the cutting blade (72) to move. Moving part (76); guide ring (73), the guide ring (73) is fixed to the outer ring (82), the guide ring (73) has a through guide groove (77) on its peripheral wall along the inclined direction, the second guide rod (75) is in normal state and abuts against one end of the guide ring (73), the guide ring (73) has a guide block (78) on the side of the second guide rod (75) in normal state, the guide block (78) is located at the guide groove (77) to extend the side wall of the guide groove (77) toward the rotation direction of the inner ring (83); the cutting assembly (7) has two parts, which are symmetrically arranged along both ends of the outer ring (82), and the distance between the two second guide rods (75) is the largest when the second guide rod (75) is in normal state.

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