Automatic sleeving equipment for shaft spring protective cover

Abstract

The invention relates to the technical field of spring machining equipment, in particular to automatic shaft spring protective cover sleeving equipment which comprises a support, a conveying device, a sleeving device, a thermal shrinkage device and a cutting device. The conveying device achieves stable conveying of the springs through cooperation of a conveying belt and a rotating shaft and guarantees positioning of the springs through a fixing assembly. The sleeving device is composed of a material supporting assembly and a sleeving assembly, and the protective cover can be accurately arranged in the spring in a sleeving mode; the thermal shrinkage device adopts a heating barrel to perform uniform thermal shrinkage treatment on the protective cover; the cutting device completes cutting of redundant protective cover materials through cooperative work of a cutting assembly and a driving assembly; the whole automatic assembling process of the shaft spring protective cover is achieved, the production efficiency is improved, and it is guaranteed that the product quality is consistent.

Description

Technical Field

[0001] This application relates to the technical field of spring processing equipment, and in particular, to an automatic sleeving device for shaft spring protective covers. Background Art

[0002] The automatic sleeving of spring protective covers is an important link in modern industrial production, especially in the field of protecting assembled parts of shafts and springs, and plays an irreplaceable role. By installing a protective cover on the spring, it can effectively prevent physical damage or chemical corrosion during subsequent transportation and storage, ensuring product quality while also enhancing the market competitiveness of the product. In recent years, as the manufacturing industry has moved towards greater precision and higher efficiency, traditional manual operation methods have gradually been replaced by more automated mechanical equipment. This transformation not only significantly increases the production line operation speed but also significantly reduces labor intensity and the defective rate, bringing considerable economic benefits to the enterprise.

[0003] In response to the protection requirements of special workpieces such as shaft springs, various solutions have been formed in practical applications. On the one hand, the traditional labor-intensive mode still accounts for a certain proportion. In this mode, skilled technicians usually rely on simple tools to complete a series of operation steps such as pre-opening, positioning and installation, and heat shrinkage forming of the protective cover one by one. On the other hand, with the progress of technology, more semi-automated auxiliary tools based on mechanical principles have emerged, such as devices using pneumatic grippers to initially fix the spring, or conveyor belt systems driven by servo motors to transport the parts to be processed. In addition, some enterprises have tried to integrate different functional units to create small workstations with certain comprehensive capabilities, such as professional equipment focusing on a single task such as softening and shaping thermoplastic materials, or special cutting machines focusing on tail trimming work, etc.

[0004] Although the above-mentioned various methods have alleviated the manual pressure and improved the working conditions to a certain extent, from a global perspective, many deficiencies are still exposed. Especially when facing large-scale assembly line operations, it seems inadequate, and the main reasons are concentrated in the following aspects: First, neither complete reliance on manpower nor simply superimposing several basic actions can achieve true seamless connection, and there is an obvious fault phenomenon between the successful opening of the protective cover and the final output of the finished product; Second, while pursuing high-speed operation, the quality control of each detail link is ignored. For example, problems such as an increase in the final scrap rate may occur due to a series of chain reactions caused by inaccurate initial positioning; Finally and most importantly, there is a lack of a complete system to support the integrated operation of the entire process, that is, a continuous action sequence such as smoothly unfolding the protective cover to accurately cover the surface of the target object, immediately starting the corresponding temperature control program to quickly adapt to the shape characteristics, and then removing the excess corner materials cannot be completed synchronously within a relatively compact space range. Therefore, how to break through the limitations of the existing technical framework and develop a more advanced and efficient fully automated axial spring protective cover sheathing solution has become a key issue to be solved urgently. Summary of the Invention

[0005] In order to improve the load-bearing capacity at the opening of the load-bearing wall, the present application provides an automatic sheathing device for an axial spring protective cover, adopting the following technical solutions:

[0006] An automatic sheathing device for an axial spring protective cover, comprising:

[0007] A bracket;

[0008] A transportation device, the transportation device comprising:

[0009] A transportation component for transporting the spring, the transportation component comprising: a conveyor belt and two rotating shafts, the rotating shafts are rotatably connected to the bracket, and the conveyor belt is sleeved on the rotating shafts;

[0010] A fixing component for fixing the spring on the transportation component, the fixing component is installed on the conveyor belt;

[0011] A sheathing device, the sheathing device comprising: a material supporting component located on one side of the transportation component for expanding the protective cover, and a sheathing component located above the transportation component for sheathing the expanded protective cover on the spring:

[0012] A heat shrinking device, the heat shrinking device comprising: a heat shrinking component installed above the transportation component for heat shrinking the protective cover sleeved on the spring;

[0013] A cutting device, the cutting device comprising:

[0014] A cutting component for cutting off the excess protective cover at both ends of the spring after heat shrinking;

[0015] A driving assembly installed on the bracket for driving the cutting assembly to move.

[0016] Furthermore, the fixing assembly includes:

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

[0018] A first guiding rod, one end of which is fixed to the first mounting rod and is perpendicular to the first mounting rod. There are a plurality of first guiding rods, which are circumferentially distributed along the first mounting rod;

[0019] A first adjusting rod, which is arranged parallel to the first mounting rod. A limiting block is provided on the side of the first adjusting rod far from the first mounting rod; one end of the first adjusting rod elastically slides on the first guiding rod along the axis direction of the first guiding rod. In the normal state, the first adjusting rod has a tendency to slide away from the first mounting rod. There is one first adjusting rod on each first guiding rod;

[0020] There are a plurality of the fixing assemblies, which are circumferentially distributed along the conveyor belt.

[0021] Furthermore, the fixing assembly further includes:

[0022] A first unlocking disc. The first mounting rod is a hollow rod. A plurality of first avoidance grooves are axially penetrated through the peripheral wall of the first mounting rod along the axis direction of the first mounting rod. The first avoidance grooves communicate with the inner cavity of the first mounting rod. The first unlocking disc is coaxially and slidably connected inside the first mounting rod. Each first adjusting rod is connected to the first unlocking disc through a first connecting rod passing through the first avoidance groove. Both ends of the first connecting rod are respectively rotatably connected to the first unlocking disc and the first adjusting rod. The distance between the first unlocking disc and the surface of the conveyor belt is greater than the distance between the hinge point of the first connecting rod on the first adjusting rod and the surface of the conveyor belt;

[0023] A first unlocking rod, which is elastically and slidably connected inside the first mounting rod. In the normal state, one end of the first unlocking rod passes through the conveyor belt and is located between the two belt surfaces, and there is a certain distance between the other end and the first unlocking disc. An annular second avoidance groove for the first unlocking rod to pass through is provided on the peripheral wall of the rotating shaft;

[0024] A pushing rod, which is located between the two belt surfaces and is inclined downward in the moving direction of the lower belt surface. When the first unlocking rod moves to the lower belt surface along with the conveyor belt, the end of the first unlocking rod far from the first unlocking disc abuts.

[0025] Further, the material supporting assembly includes:

[0026] A material placing plate located on one side of the conveyor belt for placing stacked protective covers.

[0027] A suction attachment, which includes: a first driving member, and a plurality of suction bars are fixed on the output end of the first driving member, and the first driving member drives the suction bars to move in the vertical direction.

[0028] There are two suction attachments, which are symmetrically arranged up and down. Among them, the lower suction attachment is located between the material placing plate and the conveyor belt, and the first driving member is fixed to the bracket; the first driving member in the upper suction attachment is slidably connected to the bracket, and the cylinder drives the first driving member to reciprocate between the material placing plate and the lower suction attachment.

[0029] Further, the sleeving assembly includes:

[0030] A first mounting seat located above the conveyor belt and rotatably connected to the bracket. The rotation axis of the first mounting seat and the bracket is parallel to the conveying direction of the conveyor belt; a second driving member for driving the first mounting seat to rotate is provided on the bracket.

[0031] A second mounting rod. A third driving member is provided on the first mounting seat, 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 seat.

[0032] A mounting disc coaxially fixed to the end of the first mounting rod away from the third driving member. On the mounting disc, a plurality of sliding grooves are opened along its meridian direction. Each sliding groove is elastically slidably connected with a support rod. 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 its normal state, it is located at the end of the sliding groove away from the axis of the second mounting rod.

[0033] A tensioning disc. The second mounting rod is a hollow rod. The tensioning disc is coaxially slidably connected inside the second mounting rod. A second avoidance groove with the same number as the support rods is opened on the circumference of the first mounting rod. The support rod and the tensioning disc are connected by a second connecting rod. One end of the second connecting rod passes through the second avoidance groove and is rotatably connected to the end of the support rod close to the second mounting rod, and the other end is rotatably connected to the tensioning disc.

[0034] A second unlocking rod coaxially passes 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. An abutting disc is provided at the end of the second unlocking rod away from the second mounting rod. The abutting disc is directly connected to the mounting disc through a gas spring. In the normal state, there is a distance between the second unlocking rod and the tensioning disc.

[0035] Furthermore, the sleeving assembly further includes:

[0036] A pull ring provided on the side of the tensioning disc away from the mounting disc:

[0037] A shift lever located between the first mounting seat and the suction member. The middle of the shift lever is elastically rotatably connected to the bracket, and the rotation axis is parallel to the rotation axis of the first mounting seat and the bracket. In the normal state, the shift lever is in a vertical state. When the first driving member drives the support rod in the normal state to rotate to a horizontal state, the shift lever is inserted into the pull ring;

[0038] A limiting rod located on the side of the shift lever close to the first mounting seat and sliding vertically on the bracket. When the limiting rod moves to the lowest end, the limiting rod abuts against a section of the shift lever above its rotation axis;

[0039] A third unlocking rod fixed to the side of the limiting rod away from the first mounting seat and inclined downward in the direction away from the first mounting seat. The third unlocking rod is elastically slidably connected to the bracket. In the normal state, the limiting rod abuts against the shift lever. When the shift lever is inserted into the pull ring, the mounting disc is located between the third unlocking rod and the shift lever. When the mounting disc moves toward the side away from the first mounting seat, the mounting disc abuts against the third unlocking rod, driving the shift lever to move upward.

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

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

[0042] A heating barrel located above the conveyor belt with the barrel opening facing downward and the barrel wall being hollow. A plurality of air outlet holes are provided on the inner wall of the heating barrel, and a hot air blower for providing hot air flow to the cavity of the barrel wall of the heating barrel is provided on the heating barrel;

[0043] A fourth driving member installed on the bracket for driving the heating barrel to move vertically.

[0044] Furthermore, the driving assembly includes:

[0045] A fifth driving member, which is fixedly installed on the bracket;

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

[0047] An inner ring, which is coaxially rotatably connected to the inner wall of the outer ring. A gear ring is coaxially sleeved on the peripheral wall of the inner ring. A gear meshing with the gear ring is provided on the outer ring, and a motor for driving the gear to mesh is provided on the outer ring;

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

[0049] Further, the cutting assembly includes:

[0050] A mounting plate, which is installed on the inner wall of the inner ring along the axial direction of the inner ring. A second mounting seat is provided on the mounting plate, and a second guide rod is provided on the second mounting seat. The second guide rod is arranged along the meridian direction of the inner ring, and the second guide rod elastically slides along the axial direction of the inner ring on the second mounting seat;

[0051] A cutting knife, which is on the second guide rod and slides along the setting direction of the second guide rod. A sixth driving member for driving the cutting knife to move is provided on the second guide rod;

[0052] A guide ring, which is fixed to the outer ring. A through guide groove is formed on the peripheral wall of the guide ring in an inclined direction. When the second guide rod is in a normal state, it abuts against one end of the guide ring. A guiding block is provided on the surface of the guide ring where the second guide rod normally abuts, and the guiding block is arranged at the guide groove to extend the side wall of the guide groove facing the rotating direction of the inner ring;

[0053] There are two cutting assemblies, which are symmetrically arranged along both ends of the outer ring. When the second guide rod is in a normal state, the distance between the two second guide rods is the largest.

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

[0055] 1. A designed automatic sleeving device for shaft spring protective covers, which facilitates the positioning and conveying of springs through a fixing component.

[0056] 2. A designed automatic sleeving device for shaft spring protective covers, which completes the sleeving of the protective cover through the mutual cooperation of a material supporting component and a sleeving component.

[0057] 3. A designed automatic sleeving device for shaft spring protective covers, which realizes the trimming of the redundant protective cover on the spring through a cutting device. Brief Description of the Drawings

[0058] Figure 1 is a schematic diagram of the overall structure of an automatic sleeving device for a shaft spring protective cover according to an embodiment of the present application;

[0059] Figure 2 is a schematic diagram of a partial structure of an automatic sleeving device for a shaft spring protective cover according to an embodiment of the present application, aiming to show the transportation component and the fixing component;

[0060] Figure 3 is a schematic diagram of a partial structure of an automatic sleeving device for a shaft spring protective cover according to an embodiment of the present application, aiming to show the fixing component;

[0061] Figure 4 is a schematic diagram of a partial structure of an automatic sleeving device for a shaft spring protective cover according to an embodiment of the present application, aiming to show the material supporting component and a partial sleeving component;

[0062] Figure 5 is a schematic diagram of a partial structure of an automatic sleeving device for a shaft spring protective cover according to an embodiment of the present application, aiming to show the sleeving component;

[0063] Figure 6 is a schematic diagram of a partial structure of an automatic sleeving device for a shaft spring protective cover according to an embodiment of the present application, aiming to show the process of the sleeving component spreading the protective cover on the material supporting component;

[0064] Figure 7 is a schematic diagram of a partial structure of an automatic sleeving device for a shaft spring protective cover according to an embodiment of the present application, aiming to show the heat shrinkage component;

[0065] Figure 8 is a schematic diagram of a partial structure of an automatic sleeving device for a shaft spring protective cover according to an embodiment of the present application, aiming to show the driving component and the cutting component;

[0066] Figure 9 is a schematic diagram of a partial structure of an automatic sleeving device for a shaft spring protective cover according to an embodiment of the present application, aiming to show the cutting component.

[0067] Reference numerals: 01, protective cover; 1, bracket; 2, transportation component; 21, conveyor belt; 22, rotating shaft; 3, fixing component; 31, first mounting rod; 32, first guiding rod; 33, first adjusting rod; 34, first unlocking disc; 35, first unlocking rod; 36, pushing rod; 37, first connecting rod; 4, material supporting component; 41, material discharging plate; 42, adsorbing component; 421, first driving part; 422, adsorbing strip; 5, sleeving component; 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, abutting disc; 552, gas spring; 56, second driving part; 57, third driving part; 58, blocking rod; 59, limiting rod; 591, third unlocking rod; 6, heat shrinking component; 61, heating barrel; 62, fourth driving part; 7, cutting component; 71, mounting plate; 72, cutting knife; 73, guiding ring; 74, second mounting base; 75, second guiding rod; 76, sixth driving part; 77, guiding groove; 78, guiding block; 8, driving component; 81, fifth driving part; 82, outer ring; 83, inner ring. Detailed implementation manners

[0068] The following further elaborates on this application in conjunction with the Figures 1-9 accompanying drawings.

[0069] An embodiment of this application discloses an automatic sleeving device for a shaft spring protective cover.

[0070] Referring to Figure 1 and Figure 2 , an automatic sleeving device for a shaft spring protective cover includes a bracket 1, a transportation device, a sleeving device, a heat shrinking device, and a cutting device. The transportation device includes a transportation component 2 for transporting the spring. The transportation component 2 includes a conveyor belt 21 and two rotating shafts 22. The rotating shafts 22 are rotatably connected to the bracket 1, and the conveyor belt 21 is sleeved on the rotating shafts 22. In this application, the conveyor belt 21 is horizontally placed; a fixing component 3 for fixing the spring on the transportation component 2, and the fixing component 3 is installed on the conveyor belt 21;

[0071] The sleeving device includes: a material supporting component 4 located on one side of the transportation component 2 for expanding the protective cover, and a sleeving component 5 located above the transportation component 2 for sleeving the expanded protective cover on the spring:

[0072] The heat shrinking device includes: a heat shrinking component 6 installed above the transportation component 2 for heat shrinking the protective cover sleeved on the spring;

[0073] The cutting device includes:

[0074] a cutting component 7 for cutting off the redundant protective cover at both ends of the spring after heat shrinking;

[0075] A driving component 8 installed on the bracket 1 for driving the cutting component 7 to move;

[0076] The operator places the spring on the fixing component 3, and the conveyor belt 21 transports the fixing component 3 with the spring fixed thereon to the sleeving component 5. After the material supporting component 4 expands the protective cover, the sleeving component 5 expands the protective cover again and sleeves it on the spring. Subsequently, the conveyor belt 21 transports the spring with the protective cover sleeved thereon to the heat shrinking component 6 for heat shrinking the protective cover. After the heat shrinking is completed, it is transported to the cutting device, and the driving component 8 drives the cutting component 7 to cut off the redundant protective covers at both ends of the spring.

[0077] Refer to Figure 1 、 Figure 2 and Figure 3 As shown in, the fixing component 3 includes a first mounting rod 31, a first guiding rod 32 and a first adjusting rod 33. The first mounting rod 31 is coaxially and perpendicularly installed on the outer surface of the conveyor belt 21. One end of the first guiding rod 32 is fixed on the first mounting rod 31 and is perpendicular to the first mounting rod 31. There are multiple first guiding rods 32, which are circumferentially distributed 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 guiding rod 32 along the axis direction of the first guiding rod 32. In the normal state, the first adjusting rod 33 has a tendency to slide towards the side away from the first mounting rod 31. There is one first adjusting rod 33 on each first guiding rod 32; there are multiple fixing components 3, which are circumferentially distributed along the conveyor belt 21;

[0078] In this way, multiple first adjusting rods 33 form a quasi-cylinder. When fixing the spring, the operator only needs to sleeve the spring on the outside of the multiple first adjusting rods 33 at one end of the conveyor belt 21. The first adjusting rod 33 abuts against the inner side of the spring according to its own elasticity, and the bottom of the spring abuts against the limiting block, thereby fixing the spring on the fixing component 3.

[0079] Refer to Figure 3 In order to facilitate the operator to sleeve 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 towards the mounting column, so as to facilitate the operator to directly sleeve the spring.

[0080] Refer to Figure 2 and Figure 3, To facilitate the adjustment of the position of the first adjusting rod 33 by personnel and automatically remove the spring from the fixing component 3, the fixing component 3 further includes a first unlocking disc 34, a first unlocking rod 35, and a pushing rod 36. The first mounting rod 31 is a hollow rod. A plurality of first avoiding grooves are formed through the peripheral wall of the first mounting rod 31 along the axial direction of the first mounting rod 31. The first avoiding grooves communicate with the inner cavity of the first mounting rod 31. The first unlocking disc 34 is coaxially and slidably connected inside the first mounting rod 31. Each first adjusting rod 33 is connected to the first unlocking disc 34 through a first connecting rod 37 passing through the first avoiding groove. Both 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 first unlocking disc 34 and the surface of the conveyor belt 21 is greater than the distance between the hinge point of the first connecting rod 37 on the first adjusting rod 33 and the surface of the conveyor belt 21. The first unlocking rod 35 is elastically and slidably connected inside the first mounting rod 31. In the normal state, one end of the first unlocking rod 35 passes through the conveyor belt 21 and is located between the two belt surfaces, and there is a certain distance between the other end and the first unlocking disc 34. An annular second avoiding groove for the first unlocking rod 35 to pass through is formed on the peripheral wall of the rotating shaft 22. The pushing rod 36 is located between the two belt surfaces and is inclined downward in the moving direction 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;

[0081] Thus, when the conveyor belt 21 drives the spring of the processed protective cover to the lower part of the conveyor belt 21, the first unlocking rod 35 abuts against the pushing 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, and at this time, the spring drops from the fixing component 3.

[0082] Referring to Figure 1 and Figure 4 , the material supporting component 4 includes a material placing plate 41 and an adsorbing member 42. The material placing plate 41 is located on one side of the conveyor belt 21 for placing stacked protective covers. The adsorbing member 42 includes a first driving member 421. A plurality of adsorption strips 422 are fixed on the output end of the first driving member 421. In this application, the adsorption strips 422 can be set as pneumatic adsorption discs. The first driving member 421 is a cylinder. The first driving member 421 drives the adsorption strips 422 to move in the vertical direction. There are two adsorbing members 42, which are symmetrically arranged up and down. The lower adsorbing member 42 is located between the material placing plate 41 and the conveyor belt 21, and the first driving member 421 is fixed to the bracket 1. The first driving member 421 in the upper adsorbing member 42 is slidably connected to the bracket 1, and the first driving member 421 is driven by a cylinder to reciprocate between the material placing plate 41 and the lower adsorbing member 42;

[0083] Thus, after the upper suction component 42 is moved above the blanking plate 41 by the air cylinder, the first driving member 421 drives the suction strip 422 to adsorb the protective cover. Subsequently, the first driving member 421 moves the adsorbed protective cover directly above the lower suction component 42. The upper suction strip 422 moves downward, enabling the lower suction strip 422 to adsorb the protective cover. Through the cooperation of the upper and lower first driving members 421, the protective cover is initially expanded, waiting for the sleeving assembly 5 to take away the initially expanded protective cover.

[0084] Referring to Figure 1 , Figure 4 , Figure 5 and Figure 6 , the sleeving assembly 5 includes a first mounting seat 51, a second mounting rod 52, a mounting disc 53, a tensioning disc 54, and a second unlocking rod 55. The first mounting seat 51 is located above the conveyor belt 21 and is rotatably connected to the bracket 1. The rotation axis of the first mounting seat 51 and the bracket 1 is parallel to the conveying direction of the conveyor belt 21; a second driving member 56 for driving the first mounting seat 51 to rotate is provided on the bracket 1. In this application, the second driving member 56 is a motor; a third driving member 57 is provided on the first mounting seat 51. The third driving member 57 is used to drive the second mounting rod 52 to slide in a direction perpendicular to the rotation axis of the first mounting seat 51. In this application, the third driving member 57 is an air cylinder; the mounting disc 53 is coaxially fixed to one end of the second mounting rod 52 away from the third driving member 57. On the mounting disc 53, a plurality of sliding grooves are opened along its meridian direction. Each sliding groove is elastically slidably connected with a support rod 541. 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. When the support rod 541 is in its normal state, it is located at one end of the sliding groove away from the axis of the second mounting rod 52; the second mounting rod 52 is a hollow rod. The tensioning disc 54 is coaxially slidably connected inside the second mounting rod 52. A second avoidance groove with the same number as the support rod 541 is opened on the circumferential side of the second mounting rod 52. 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 avoidance groove and is rotatably connected to one end of the support rod 541 close to 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 one end is located at the end of the mounting disc 53 away from the second mounting rod 52. A contact disc 551 is provided at the end of the second unlocking rod 55 away from the second mounting rod 52. The contact disc 551 is directly connected to the mounting disc 53 by a gas spring 552. In the normal state, there is a distance between the second unlocking rod 55 and the tensioning disc 54;

[0085] Thus, the first driving member 421 drives the mounting base to rotate, so that the second mounting rod 52 is horizontally oriented towards one side of the material feeding plate 41. Subsequently, the first driving member 421 drives the mounting disc 53 to move towards the initially expanded protective cover. During the movement, the operator controls the movement of the tightening disc 54. The tightening disc 54 drives the overall contraction of the support rod 541 through the second connecting rod 542, so that the initially expanded protective cover is sleeved outside the plurality of support rods 541. Subsequently, release the tightening disc 54. Under the elastic action of the support rod 541 itself, the protective cover is expanded again. It should be noted that the end of the support rod 541 away from the second mounting rod 52 cannot completely extend out of the protective cover, leaving a partially expanded protective cover.

[0086] Subsequently, the second driving member 56 drives the mounting disc 53 to retract, and the first driving member 421 drives the rotating seat to rotate, so that the protective cover moves above the conveyor belt 21. When the fixing assembly 3 with the spring moves directly below the mounting disc 53, the second driving member 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 abutting disc 551. The abutting disc 551 moves, driving the second unlocking rod 55 to abut against the tightening disc 54, driving the tightening disc 54 to move. The tightening disc 54 drives the support rod 541 to contract inward. At this time, due to the elasticity of the protective cover itself, it begins to fit on the spring. Since there is a part of the protective cover at the end of the support rod 541 away from the second mounting rod 52, therefore, the protective cover located outside the support rod 541 first fits on 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 fits on the spring, thus completing the sleeving of the protective cover.

[0087] Furthermore, in order 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 relatively small coefficient of friction with plastic, such as ultra-high molecular weight polyethylene material.

[0088] Refer to Figure 1 、 Figure 4 and Figure 6 For the purpose of automatically adjusting the position of the tightening disc 54 during the process of the sleeving assembly 5 expanding the protective cover, the sleeving assembly 5 further includes a pull ring 543, a stop rod 58, a limit rod 59 and a third unlocking rod 591. The pull ring 543 is arranged on the side of the tightening disc 54 away from the mounting disc 53.

[0089] The shift lever 58 is located between the first mounting seat 51 and the suction attachment 42. The middle part of the shift lever 58 is elastically rotatably connected to the bracket 1, and the rotation axis is parallel to the rotation axes of the first mounting seat 51 and the bracket 1. In the normal state, the shift lever 58 is in a vertical state. When the first driving member 421 drives the support rod 541 in the normal state to rotate to the horizontal state, the shift lever 58 is inserted into the pull ring 543;

[0090] The limiting rod 59 is located on the side of the shift lever 58 close to the first mounting seat 51 and slides vertically on the bracket 1. When the limiting rod 59 moves to the lowest end, the limiting rod 59 abuts against a section of the shift lever 58 above its rotation axis;

[0091] The third unlocking rod 591 is fixed to the side of the limiting rod 59 away from the first mounting seat 51 and is inclined downward in the direction away from the first mounting seat 51. The third unlocking rod 591 is elastically slidably connected to the bracket 1. In the normal state, the limiting rod 59 abuts against the shift lever 58. When the shift lever 58 is inserted into the pull ring 543, the mounting disc 53 is located between the third unlocking rod 591 and the shift lever 58. When the mounting disc 53 moves toward the side away from the first mounting seat 51, the mounting disc 53 abuts against the third unlocking rod 591 and drives the shift lever 58 to move upward;

[0092] Thus, during the process of sleeving the protective cover on the support rod 541:

[0093] First, during the rotation of the first mounting seat 51, the shift lever 58 is inserted into the pull ring 543. Subsequently, the third driving member 57 drives the mounting rod to move. At this time, due to the action of the limiting rod 59, the rotation of the shift lever 58 is restricted. The shift lever 58 keeps the pull ring 543 stationary, and the pull ring 543 keeps the tension disc 54 stationary. Therefore, during the movement of the mounting disc 53, the second connecting rod 542 causes the support rod 541 to contract toward 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 and drives the limiting rod 59 to move upward until it disengages from the shift lever 58. At this time, the support rod 541 expands under its own elastic action, and the pull ring 543 drives the shift lever 58 to deflect and break away from the restriction of the shift lever 58;

[0095] Finally, during the process of the third driving member 57 driving the mounting rod to retract, the third unlocking rod 591 returns to its initial state, and the shift lever 58 also returns to its initial state. When the pull ring 543 abuts against the shift lever 58, since the shift lever 58 is elastically rotatably connected itself, it will not cause an obstruction;

[0096] Thus, the automatic contraction of the support rod 541 is completed.

[0097] Refer to Figure 1 and Figure 7, the heat shrinkage assembly 6 includes a heating barrel 61 and a fourth driving member 62. The heating barrel 61 is located above the conveyor belt 21 with its barrel opening facing downward, and the barrel wall is hollow. A plurality of air outlet holes are formed on the inner wall of the heating barrel 61, and a hot air blower for providing hot air flow to the cavity of the barrel wall of the heating barrel 61 is provided on the heating barrel 61; the fourth driving member 62 is installed on the bracket 1 and is used to drive the heating barrel 61 to move vertically. In this application, the fourth driving member 62 is a cylinder;

[0098] In this way, when the spring with the protective cover sleeved thereon moves to below the heating barrel 61, the fourth driving member 62 drives the heating barrel 61 to sleeve outside the spring. At the same time, the hot air blower works to blow hot air into the heating barrel 61, and the hot air blows from the air outlet holes to the surface of the protective cover, causing it to shrink and fit more closely to the spring.

[0099] Refer to Figure 1 and Figure 8 , the driving assembly 8 includes a fifth driving member 81, an outer ring 82 and an inner ring 83. The fifth driving member 81 is fixedly installed on the bracket 1. In this application, the fifth driving member 81 is a cylinder; the outer ring 82 is located above the conveyor belt 21 and is arranged parallel to the belt surface of the conveyor belt 21. The fifth driving member 81 drives the outer ring 82 to move in a direction perpendicular to the belt surface of the conveyor belt 21; the inner ring 83 is coaxially rotatably connected to the inner wall of the outer ring 82, and a toothed ring is coaxially sleeved on the peripheral wall of the inner ring 83. A gear meshing with the toothed ring is provided on the outer ring 82, and a motor for driving the gear to mesh is provided on the outer ring 82; the cutting assembly 7 is installed on the inner ring 83;

[0100] In this way, when the spring moves to directly below the outer ring 82 after heat shrinkage is completed, the fifth driving member 81 drives the outer ring 82 to move downward to sleeve outside the spring. Subsequently, the motor drives the gear to rotate, the gear drives the toothed ring to rotate, the toothed ring drives the inner ring 83 to rotate, and the inner ring 83 drives the cutting assembly 7 to cut off the redundant protective covers at both ends of the spring.

[0101] Refer to Figure 1 , Figure 8 and Figure 9, in this application, since the removed protective cover is at both ends of the spring, if it is simply cut circumferentially, the waste of the protective cover after cutting will be sleeved on the fixing component 3, which is not convenient for personnel to remove. Therefore, in order to facilitate the removal of the cut protective cover by personnel, the cutting component 7 includes a mounting plate 71, a cutting knife 72 and a guide ring 73. The mounting plate 71 is installed on the inner wall of the inner ring 83 along the axial direction of the inner ring 83. A second mounting seat 74 is provided on the mounting plate 71, and a second guide rod 75 is provided on the second mounting seat 74. The second guide rod 75 is arranged along the meridian direction of the inner ring 83, and the second guide rod 75 elastically slides along the axial direction of the inner ring 83 on the second mounting seat 74; the cutting knife 72 is on the second guide rod 75 and slides along the setting direction of the second guide rod 75. A sixth driving member 76 for driving the cutting knife 72 to move is provided on the second guide rod 75. In this application, the sixth driving member 76 is a cylinder; the guide ring 73 is fixed to the outer ring 82, and a through guide groove 77 is formed on the peripheral wall of the guide ring 73 in an inclined direction. When the second guide rod 75 is in a normal state, it abuts against one end of the guide ring 73. A guiding block 78 is provided on the surface of the guide ring 73 where the second guide rod 75 normally abuts. The guiding block 78 is arranged at the guide groove 77 to extend the side wall of the guide groove 77 facing the rotation direction of the inner ring 83;

[0102] There are two cutting components 7, which are symmetrically arranged along both ends of the outer ring 82. When the second guide rod 75 is in a normal state, the distance between the two second guide rods 75 is the largest;

[0103] Thus, when the outer ring 82 moves to the outside of the spring, the two cutting knives 72 are respectively located at both ends of the spring, and at this time, the mutually remote ends of the two guide rings 73 are respectively located at both ends of the protective cover, and the mutually close ends are the required cutting positions. The sixth driving member 76 drives the cutting knife 72 to extend to a position where it can contact the protective cover. Subsequently, the motor drives the inner ring 83 to rotate, 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 guiding 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 close to the other guide ring 73. During this process, the cutting knife 72 obliquely cuts into the protective cover from both ends of the protective cover;

[0104] Subsequently, the inner ring 83 continues to rotate, and the cutting knife 72 slides along the end of the guide ring 73 away from the guiding block 78 to complete the circular cutting. Subsequently, at the guide groove 77, the inner ring 83 rotates in the reverse direction, and the second guide rod 75 slides automatically into the guide groove 77 according to its own elastic deformation and moves from one end of the guide ring 73 to the other end, thereby completing the cutting, cutting off the annular protective cover and directly dropping it from the spring.

[0105] To save the workload of personnel, a blower is arranged on one side of the conveyor belt 21 to blow off the cut protective cover.

[0106] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. An automatic sleeve installation device for a shaft spring protective cover, characterized in that: include: Bracket (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), and the conveyor belt (21) being sleeved on the rotating shafts (22); A fixing assembly (3) for fixing the spring to the transport assembly (2), wherein the fixing assembly (3) is mounted on the conveyor belt (21); A sleeve device, the sleeve device comprising: a supporting component (4) located on one side of the transport component (2) for supporting the protective cover, and a sleeve component (5) located above the transport component (2) for sleeve the supported protective cover on the spring: A heat shrink device, the heat shrink device comprising: a heat shrink component (6) installed above the transport component (2) and configured to heat shrink the protective cover sleeved on the spring; A cutting device, comprising: A cutting assembly (7) for cutting off the redundant protective covers at both ends of the spring after heat shrinkage; A driving assembly (8) mounted on the support (1) and used for driving the cutting assembly (7) to move.

2. The automatic sleeve installation device for axle spring protective cover according to claim 1 is characterized in that: The fixing assembly (3) comprises: A first mounting rod (31), the first mounting rod (31) being coaxially and vertically mounted on the outer surface of the conveyor belt (21); a first guide rod (32), one end of the first guide rod (32) being fixed to the first mounting rod (31) and being perpendicular to the first mounting rod (31); a plurality of first guide rods (32) being provided and distributed along the circumference of the first mounting rod (31); A first adjusting rod (33), the first adjusting rod (33) is arranged parallel to the first mounting rod (31), and a stop block is arranged 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 direction of the first guide rod (32), and in a normal state, the first adjusting rod (33) has a tendency to slide toward the side away from the first mounting rod (31), and each first guide rod (32) is provided with a first adjusting rod (33); The fixing components (3) are provided in plurality and distributed along the circumference of the conveyor belt (21).

3. The automatic sleeve installation device for axle spring protective cover according to claim 2 is characterized in that: The fixing assembly (3) further comprises: A first unlocking disc (34), the first mounting rod (31) is a hollow rod, a plurality of first avoidance grooves are formed on the peripheral wall of the first mounting rod (31) along the axial direction of the first mounting rod (31), the first avoidance grooves are communicated with the inner cavity of the first mounting rod (31), the first unlocking disc (34) is coaxially slidably connected to the inside of the first mounting rod (31), each of the first adjusting rods (33) is connected to the first unlocking disc (34) through the first connecting rod (37) through the first avoidance groove, the two ends of the first connecting rod (37) are respectively rotatably connected to the first unlocking disc (34) and the first adjusting rod (33), the distance between the first unlocking 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); A first unlocking rod (35), the first unlocking rod (35) is elastically slidably connected to the first mounting rod (31), and in a normal state, one end of the first unlocking rod (35) passes through the conveyor belt (21) and is located between the two belt surfaces, and a certain distance is left between the other end and the first unlocking disc (34), and a second annular avoidance groove for the first unlocking rod (35) to pass through is provided on the peripheral wall of the rotating shaft (22); A push rod (36) is located between the two belt surfaces and is arranged to be inclined downward in the moving direction of the lower belt surface. When the first unlocking rod (35) moves to the lower belt surface along with the conveyor belt (21), the first unlocking rod (35) abuts against one end away from the first unlocking disc (34).

4. The automatic sleeve installation device for axle spring protective cover according to claim 1 is characterized in that: The support material assembly (4) comprises: A material discharge plate (41), the material discharge plate (41) being located on one side of the conveyor belt (21) and being used for placing stacked protective covers; An adsorption member (42), the adsorption member (42) comprising: a first driving member (421), a plurality of adsorption bars (422) being fixed on an output end of the first driving member (421), the first driving member (421) driving the adsorption bars (422) to move in a vertical direction; The adsorption components (42) are provided with two of them, which are symmetrically arranged in an upper and lower manner, wherein the adsorption component (42) located on the lower side is located between the discharge plate (41) and the conveyor belt (21), and the first driving component (421) is fixed to the bracket (1); the first driving component (421) in 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 discharge plate (41) and the adsorption component (42) below.

5. The automatic sleeve installation device for axle spring protective cover according to claim 4 is characterized in that: The connecting component (5) comprises: a first mounting seat (51), the first mounting seat (51) being located above the conveyor belt (21) and being rotatably connected to the bracket (1), the rotation axis of the first mounting seat (51) and the bracket (1) being parallel to the conveying direction of the conveyor belt (21); and a second driving member (56) for driving the first mounting seat (51) to rotate is provided on the bracket (1); A second mounting rod (52), wherein the first mounting seat (51) is provided with a third driving member (57), and the third driving member (57) is used to drive the second mounting rod (52) to slide along a direction perpendicular to the rotation axis of the first mounting seat (51); A mounting disc (53), wherein the mounting disc (53) is coaxially fixed to an end of the first mounting rod (31) away from the third driving member (57), and a plurality of slide grooves are provided on the mounting disc (53) along its longitudinal direction, and a support rod (541) is elastically slidably connected in each slide groove, and the support rod (541) is located on a side of the mounting disc (53) away from the second mounting rod (52) and is perpendicular to the mounting disc (53). When the support rod (541) is in a normal state, it is located at an end of the slide groove away from the axis of the second mounting rod (52); The elastic disc (54) is a hollow rod, the second mounting rod (52) is coaxially slidably connected to the inside of the second mounting rod (52), the first mounting rod (31) is provided with a second avoidance groove having the same number as the support rod (541), the support rod (541) and the elastic disc (54) are connected via a second connecting rod (542), one end of the second connecting rod (542) passes through the second avoidance 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 elastic disc (54); A second unlocking rod (55), 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 an end of the mounting disc (53) away from the first mounting rod (31), and an abutment disc (551) is provided at the end of the second unlocking rod (55) away from the second mounting rod (52), and the abutment disc (551) is directly connected to the mounting disc (53) through a gas spring (552). In normal state, a distance is left between the second unlocking rod (55) and the tension disc (54).

6. The automatic sleeve installation device for axle spring protective cover according to claim 5 is characterized in that: The set assembly (5) further comprises: A pull ring (543), the pull ring (543) is arranged on a side of the elastic disc (54) away from the mounting disc (53): a gear lever (58), the gear lever (58) being located between the first mounting seat (51) and the adsorption member (42); a middle portion of the gear lever (58) being elastically rotatably connected to the bracket (1); a rotation axis being parallel to the rotation axis of the first mounting seat (51) and the bracket (1); the gear lever (58) being in a vertical state in a normal state; and when the first driving member (421) drives the support rod (541) in a normal state to rotate to a horizontal state, the gear lever (58) is inserted into the pull ring (543); a limiting rod (59), the limiting rod (59) being located on a side of the shift rod (58) close to the first mounting seat (51) and sliding on the bracket (1) in a vertical direction; when the limiting rod (59) moves to the lowest end, the limiting rod (59) abuts against the shift rod (58) at a section above its rotation axis; A third unlocking rod (591), the third unlocking rod (591) is fixed on a side of the limiting rod (59) away from the first mounting seat (51), and is tilted downward in the direction in which the limiting rod (59) is away from the first mounting seat (51). The third unlocking rod (591) is elastically slidably connected to the bracket (1). In normal state, the limiting rod (59) abuts against the shift rod (58). When the shift rod (58) is inserted into the pull ring (543), the mounting disc (53) is located between the third unlocking rod (591) and the shift rod (58). When the mounting disc (53) moves toward the side away from the first mounting seat (51), the mounting disc (53) abuts against the third unlocking rod (591), driving the shift rod (58) to move upward.

7. The automatic sleeve installation device for axle spring protective cover according to claim 1 is characterized in that: The heat shrink assembly (6) comprises: A heating barrel (61), the heating barrel (61) is located above the conveyor belt (21), the barrel mouth faces downward, the barrel wall is hollow, a plurality of air outlet holes are opened on the inner wall of the heating barrel (61), and a hot air blower is provided on the heating barrel (61) to provide hot air flow to the barrel wall cavity of the heating barrel (61); A fourth driving member (62), the fourth driving member (62) is installed on the bracket (1) and is used to drive the heating barrel (61) to move vertically.

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

9. The automatic sleeve installation device for axle spring protective cover according to claim 8 is characterized in that: The cutting assembly (7) comprises: A mounting plate (71), the mounting plate (71) being mounted on the inner wall of the inner ring (83) along the axial direction of the inner ring (83), the mounting plate (71) being provided with a second mounting seat (74), the second mounting seat (74) being provided with a second guide rod (75), the second guide rod (75) being arranged along the meridian direction of the inner ring (83), and the second guide rod (75) elastically sliding on the second mounting seat (74) along the axial direction of the inner ring (83); a cutting knife (72), the cutting knife (72) sliding on the second guide rod (75) along the setting direction of the second guide rod (75), and the second guide rod (75) is provided with a sixth driving member (76) for driving the cutting knife (72) to move; A guide ring (73), the guide ring (73) is fixed to the outer ring (82), a guide groove (77) penetrating along an inclined direction is provided on a peripheral wall of the guide ring (73), the second guide rod (75) abuts against one end of the guide ring (73) when the second guide rod (75) is in a normal state, a guide block (78) is provided on a side of the guide ring (73) abutting against the second guide rod (75) when the second guide rod (75) is in a normal state, and the guide block (78) is provided 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) is provided with two, which are symmetrically arranged along the two ends of the outer ring (82); when the second guide rods (75) are in a normal state, the distance between the two second guide rods (75) is the largest.

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