An apparatus for assembling a shock absorber and a dust cover

Abstract

This utility model discloses a device for assembling a shock absorber and a dust cover, comprising: an expansion mechanism having multiple expansion claws evenly distributed circumferentially; the dust cover, with its large-diameter end facing upward, is vertically fitted onto the multiple expansion claws from their ends; the multiple expansion claws evenly expand the small-diameter end of the dust cover radially; a lifting mechanism for vertically lowering the expansion mechanism, thereby vertically fitting the dust cover, expanded by the expansion claws, onto the shock absorber's cylinder, until the ends of the expansion claws reach the mounting flange position on the shock absorber's cylinder and the downward movement stops; and a pressing mechanism for pressing down the dust cover when the ends of the expansion claws reach the mounting flange position on the shock absorber's cylinder, so that the small-diameter end of the dust cover completely passes over the mounting flange on the shock absorber's cylinder. The advantages are that this device enables rapid assembly of the shock absorber and dust cover, with a fast assembly cycle, low labor intensity, and the dust cover is less prone to deformation or scratches.

Description

Technical Field

[0001] This utility model belongs to the field of automotive parts manufacturing and processing technology, and in particular relates to a device for assembling shock absorbers and dust covers. Background Technology

[0002] The shock absorber assembly is one of the most precise and complex mechanical components in a car's suspension system. The dust cover (DustCover / Boot), as a key component of the shock absorber assembly, can prevent solid particles such as mud, gravel, and dust from entering and causing abnormal noise due to friction with the piston rod of the shock absorber; it can prevent foreign objects from rubbing against the oil seal and causing damage to the oil seal, thus preventing oil leakage; and it can prevent corrosive gases from entering and prevent corrosion of key components such as the piston rod and oil seal.

[0003] like Figure 1 As shown, the shock absorber b includes a cylinder b1, a solenoid valve is located near the tail of the cylinder b1 (valve mounting position b4 is shown in the figure), an oil seal b5 is located at the head of the cylinder b1, a piston rod b3 is located inside the cylinder b1 and extends through the oil seal b5, and a mounting flange b2 is located on the cylinder b1 at the position where a dust cover is to be installed; Figure 2As shown, the dust cover a is typically made of rubber or polyurethane and is flared in shape. The small-diameter end a1 of the dust cover a passes over the mounting flange b2 and fits tightly against the cylinder b1. After the dust cover a is installed and both ends are fixed, the inner side of the flange mating section a3 of the dust cover a is tightly fitted against the mounting flange b2. Currently, the assembly of the shock absorber b and the dust cover a mainly relies on manual operation. Due to the presence of the solenoid valve, the worker forcefully opens the small-diameter end a1 of the dust cover a, inserts it from the head side of the cylinder b1, then makes the small-diameter end a1 of the dust cover a pass over the mounting flange b2, and then adjusts the position of the small-diameter end a1 of the dust cover a so that the inner side of the flange mating section a3 of the dust cover a can fit tightly against the mounting flange b2. This traditional manual assembly method has the following problems: The dust cover a has excellent elastic deformation capacity, requiring workers to repeatedly stretch the small-diameter end a1 of the dust cover a to fit it onto the cylinder b1 at the desired installation position. This is not only labor-intensive, causing worker hand fatigue or injury, but also potentially deforming the dust cover a due to repeated stretching. When the small-diameter end a1 of the dust cover a encounters the mounting flange b2, since the diameter of the mounting flange b2 is larger than the outer diameter of the cylinder b1, workers need to apply even greater force to expand the small-diameter end a1 of the dust cover a further, allowing it to pass over the mounting flange b2. However, most workers cannot expand the small-diameter end a1 of the dust cover a sufficiently. At this point, workers must use tools such as pry bars and levers to repeatedly adjust and pry the dust cover a to allow the small-diameter end a1 of the dust cover a to pass over the mounting flange b2, which could potentially scratch the dust cover a or the cylinder b1. In addition, this traditional manual assembly method has a slow assembly cycle, which affects production efficiency. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a device for assembling shock absorbers and dust covers. This device enables the rapid assembly of shock absorbers and dust covers, with a fast assembly cycle, low labor intensity, and the dust cover is less prone to deformation or scratches.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is: a device for assembling shock absorbers and dust covers, characterized in that it includes: The expansion mechanism has multiple expansion claws evenly distributed circumferentially. The large-diameter end of the dust cover is vertically fitted onto the multiple expansion claws from the end of the expansion claws. The multiple expansion claws evenly expand the small-diameter end of the dust cover radially, so that the diameter of the small-diameter end of the dust cover is larger than the outer diameter of the mounting flange on the cylinder of the shock absorber. A lifting mechanism is used to move the expansion mechanism vertically downward, thereby allowing the dust cover, which is opened by the expansion claw, to be vertically fitted into the cylinder of the shock absorber, until the end of the expansion claw reaches the mounting flange position on the cylinder of the shock absorber and stops moving downward; A pressing mechanism is used to press down the dust cover so that the small-diameter end of the dust cover completely passes over the mounting flange on the cylinder of the shock absorber when the end of the expanding claw reaches the mounting flange position on the cylinder of the shock absorber.

[0006] The device also includes: The first feeding mechanism is used to position the small-diameter end of the dust cover so that the large-diameter end of the dust cover is placed vertically with the large-diameter end facing upwards, and to transport the dust cover to the expansion mechanism. The second feeding mechanism is used to position the bracket installed on the tail of the shock absorber so that the piston rod of the shock absorber is placed vertically upwards, and to transport the shock absorber directly below the expansion mechanism so that the dust cover is aligned vertically with the shock absorber.

[0007] The first feeding mechanism positions the dust cover vertically with its smaller diameter end facing upwards, ensuring the dust cover enters the expansion mechanism in the correct orientation. The second feeding mechanism positions the shock absorber's tail bracket, ensuring the piston rod faces upwards and is vertically positioned, then precisely delivers the dust cover directly below the expansion mechanism, ensuring the dust cover and shock absorber are vertically and coaxially aligned, eliminating manual alignment deviations. The first and second feeding mechanisms automatically complete the delivery and positioning of the dust cover and shock absorber, forming a complete automated process with the expansion mechanism, lifting mechanism, and pressing mechanism.

[0008] The expansion mechanism consists of multiple circumferentially evenly distributed expansion cylinders and multiple expansion claws. Each expansion claw is connected to the cylinder rod of one of the expansion cylinders. After the dust cover is fitted over the multiple expansion claws, the position of the end of the expansion claw corresponds to the position of the small-diameter end of the dust cover. When the cylinder rods of the multiple expansion cylinders extend simultaneously, the multiple expansion claws automatically and evenly expand the small-diameter end of the dust cover. In this structure, the multiple circumferentially evenly distributed expansion cylinders synchronously drive the expansion claws through the cylinder rods, ensuring that the small-diameter end of the dust cover is evenly expanded by force, avoiding local stress concentration caused by manual operation. The controllable stroke of the expansion cylinders allows the opening diameter of the expansion claws to be fixed, ensuring that the required expansion degree is achieved in one go. The precise correspondence between the end of the expansion claw and the small-diameter end of the dust cover ensures that the expansion force acts only on the area to be deformed, avoiding unnecessary stress on the large-diameter end or other parts.

[0009] All the expansion cylinders are horizontally mounted on the top surface of a cylinder mounting plate, with the cylinder rods of the expansion cylinders facing outwards. The cylinder rods of the expansion cylinders are connected to the fixing part of the expansion claw via an L-shaped connector. The vertical section of the L-shaped connector is located outside the cylinder mounting plate, and the horizontal section is located directly below the bottom end face of the cylinder mounting plate. In this structure, a linear guide pair can be provided between the horizontal section of the L-shaped connector and the bottom end face of the cylinder mounting plate to ensure the stable opening and closing of the expansion claw. The horizontal mounting of the expansion cylinders on the top surface of the cylinder mounting plate with the cylinder rods extending horizontally outwards makes the overall structure more compact. The application of the L-shaped connector cleverly converts the direction of motion, transforming the horizontal linear motion of the expansion cylinders into the radial expansion motion of the expansion claws, eliminating the need for additional complex transmission mechanisms and reducing mechanical complexity.

[0010] The lifting mechanism consists of a connecting plate and a lifting drive mechanism that drives the connecting plate to move vertically up and down along with the expansion mechanism. In this structure, the lifting drive mechanism provides controllable linear motion, allowing the dust cover to move precisely downwards along the cylinder axis of the shock absorber.

[0011] The connecting plate is coaxially positioned directly above the cylinder fixing plate, and the two are fixedly connected. The lifting drive mechanism includes a base plate, a servo motor, a lead screw, a lead screw nut, and an adapter frame. The base plate is placed vertically, the servo motor is mounted on the lower part of the base plate, the output shaft of the servo motor is connected to the bottom end of the lead screw, the lead screw is screwed to the lead screw nut, the adapter frame is positioned directly in front of the base plate, the lead screw nut is fixedly connected to the adapter frame, and the adapter frame is fixedly connected to the connecting plate. In this structure, a linear guide pair is provided between the base plate and the adapter frame to improve the stability of the vertical up-and-down movement of the connecting plate with the expansion mechanism. The servo motor precisely adjusts the rotation angle of the lead screw through closed-loop control, and works with the lead screw nut to convert the rotational motion into high-precision linear lifting, ensuring that the vertical downward trajectory of the expansion mechanism and the dust cover is without deviation.

[0012] The pressing mechanism consists of a pressure plate and a pressing drive mechanism that drives the pressure plate to move vertically up and down. The pressure plate has a central through hole sufficient to accommodate all the expanding claws in their expanded state. After the dust cover is fitted over the multiple expanding claws, the large-diameter end of the dust cover contacts the bottom end face of the pressure plate. In this structure, the central through hole of the pressure plate is designed to perfectly match the expanding claws, without affecting the normal operation of the expanding claws; the bottom end face of the pressure plate contacts the large-diameter end of the dust cover, and the pressure plate applies force evenly to the large-diameter end of the dust cover, ensuring that the small-diameter end completely passes over the mounting flange in one go; the pressing drive mechanism provides controllable pressing force and stroke, ensuring that the small-diameter end of the dust cover smoothly passes over the mounting flange; the axial force on the dust cover is maintained during the pressing process, which can prevent torsional deformation.

[0013] The pressure plate is coaxially positioned directly below the cylinder mounting plate. The downward pressing drive mechanism includes a downward pressing cylinder, a cylinder mounting plate, and a force transmission plate. The downward pressing cylinder is vertically mounted on the cylinder mounting plate, with its cylinder rod pointing downwards and connected to the force transmission plate. The force transmission plate is coaxially positioned directly above the connecting plate and is connected to the pressure plate via multiple force transmission rods evenly distributed circumferentially. In this structure, the design of the downward pressing cylinder-force transmission plate-force transmission rods-pressure plate ensures that the downward pressure is transmitted strictly in the vertical direction, completely avoiding the distortion and deformation of the dust cover caused by lateral force components. The force transmission plate, acting as an intermediate medium, evenly distributes the force of the downward pressing cylinder to the multiple force transmission rods, achieving stable downward pressing of the pressure plate.

[0014] The first feeding mechanism consists of a first positioning component for positioning the small-diameter end of the dust cover for manual feeding and a first conveying component for conveying the dust cover on the first positioning component to the expansion mechanism; the first positioning component consists of a positioning disk and a plurality of positioning claws evenly arranged circumferentially on the positioning disk, the diameter of the outer ring formed by the upper parts of all the positioning claws is smaller than the port diameter of the small-diameter end of the dust cover, and the outer ring formed by the lower parts of all the positioning claws is adapted to the port of the small-diameter end of the dust cover; the first conveying component consists of a base, a fixed block, a rodless cylinder, and a cylinder with a guide rod, the rodless cylinder is vertically mounted on the base, the rodless cylinder drives the fixed block to move vertically up and down, the cylinder with a guide rod is horizontally mounted on the fixed block, and the positioning disk is disposed on the end of the guide rod of the cylinder with a guide rod. In this structure, the upper part of the positioning claw has a smaller diameter, which facilitates the automatic guidance of the dust cover into place during manual loading; the lower part of the positioning claw precisely matches the small diameter end of the dust cover to ensure coaxial positioning; the positioning claw and the expansion claw do not interfere with each other.

[0015] The second feeding mechanism consists of a second positioning assembly for positioning the bracket mounted on the tail of the shock absorber for machine or manual feeding, and a second conveying assembly for conveying the shock absorber on the second positioning assembly to directly below the expansion mechanism. The second positioning assembly consists of a positioning seat and a bracket contouring groove disposed on the positioning seat, the shape of which is adapted to the shape of the bracket mounted on the tail of the shock absorber. The second conveying assembly consists of a double-speed chain and a fixed position disposed on the double-speed chain, the positioning seat being fixed to the fixed position. In this structure, the bracket contouring groove perfectly matches the tail support of the shock absorber, ensuring that the shock absorber is always positioned in a standard posture with the piston rod vertically upward.

[0016] Compared with the prior art, the advantages of this utility model are: 1) The expansion mechanism automatically opens the small-diameter end of the dust cover through multiple evenly distributed expansion claws, allowing the dust cover to be smoothly fitted into the cylinder of the shock absorber. This replaces the repeated stretching operation by workers, significantly reducing labor intensity and completely eliminating the risk of hand fatigue and injury. At the same time, the radially uniform expansion design avoids the risk of local deformation of the dust cover caused by uneven force during manual stretching operations.

[0017] 2) Since the diameter of the mounting flange on the shock absorber cylinder is larger than the outer diameter of the cylinder, the expansion claw can mechanically expand the small diameter end of the dust cover to a size larger than the outer diameter of the mounting flange, ensuring sufficient expansion in one go. On this basis, after the expansion claw is positioned at the mounting flange, the pressing mechanism actively presses down on the dust cover, which can ensure that the small diameter end of the dust cover passes over the mounting flange without resistance, and without the need for tools such as flat-head pryers or levers, thus avoiding scratches on the dust cover or cylinder.

[0018] 3) The coordinated action of the expansion mechanism, lifting mechanism and pressing mechanism enables the dust cover to be automatically assembled onto the shock absorber, which greatly shortens the cycle time compared to manual repeated adjustments.

[0019] 4) Uniform circumferential expansion avoids local stress concentration. Combined with the linear action of vertical downward movement and pressing, the dust cover only bears controllable elastic deformation, thus protecting the integrity of the dust cover.

[0020] 5) Compared with the traditional manual assembly method, the efficiency is increased by more than 3 times; the labor intensity of workers is reduced by 70%; it is compatible with the assembly of shock absorbers and dust covers for more than 80% of common car models. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the shock absorber structure; Figure 2 This is a schematic diagram of the dust cover structure; Figure 3 This is a schematic diagram of the structure of the device of this utility model; Figure 4 for Figure 3 A schematic diagram of the structure after removing the second feeding mechanism; Figure 5 This is a schematic diagram of the combined structure of the expansion mechanism, lifting mechanism and pressing mechanism in the device of this utility model; Figure 6 This is a schematic diagram of the combined structure of the expansion mechanism (the expansion claw is covered with a dust cover), the lifting mechanism, and the pressing mechanism in the device of this utility model. Figure 7 This is a schematic diagram of the lifting mechanism in the device of this utility model; Figure 8 This is a schematic diagram of the combined structure of the expansion mechanism and the pressing mechanism in the device of this utility model; Figure 9 This is a schematic diagram of the cooperation structure between the expansion claw in the expansion mechanism and the positioning claw in the first feeding mechanism of the equipment of this utility model and the dust cover. Figure 10 for Figure 9 Sectional view along axis AA; Figure 11 This is a schematic diagram of the first feeding mechanism; Figure 12 This is a schematic diagram of the structure of the second positioning component in the second feeding mechanism. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0023] This utility model proposes a device for assembling shock absorbers and dust covers, such as... Figures 3 to 12As shown, it includes: a first feeding mechanism 1, used to position the small-diameter end a1 of the dust cover a so that the large-diameter end a2 of the dust cover a is placed vertically upwards, and to convey the dust cover a to the expansion mechanism 3; a second feeding mechanism 2, used to position the bracket b6 installed on the tail of the shock absorber b so that the piston rod b3 of the shock absorber b is placed vertically upwards, and to convey the shock absorber b to directly below the expansion mechanism 3 so that the dust cover a and the shock absorber b are vertically aligned; the expansion mechanism 3 has six expansion claws 31 evenly distributed circumferentially, and the dust cover a positioned on the first feeding mechanism 1 is vertically fitted onto the six expansion claws 31 from the end of the expansion claws 31, and the six expansion claws 31 are evenly distributed radially. Open the small diameter end a1 of dust cover a so that the diameter of the small diameter end a1 of dust cover a is larger than the outer diameter of the mounting flange b2 on the cylinder b1 of shock absorber b; lift mechanism 4 is used to move the expansion mechanism 3 vertically downward, so that the dust cover a, which is opened by the expansion claw 31, is vertically inserted into the cylinder b1 of shock absorber b, which is positioned by the second feeding mechanism 2, until the end of the expansion claw 31 reaches the position of the mounting flange b2 on the cylinder b1 of shock absorber b and stops moving downward; press down mechanism 5 is used to press down dust cover a so that the small diameter end a1 of dust cover a completely passes over the mounting flange b2 on the cylinder b1 of shock absorber b when the end of the expansion claw 31 reaches the position of the mounting flange b2 on the cylinder b1 of shock absorber b. The first feeding mechanism 1 positions the small-diameter end a1 of the dust cover a and places it vertically with its large-diameter end a2 facing upwards, ensuring that the dust cover a enters the expansion mechanism 3 in the correct posture. The second feeding mechanism 2 positions the tail bracket b6 of the shock absorber b, placing the piston rod b3 vertically upwards, and precisely delivers it directly below the expansion mechanism 3, ensuring that the dust cover a and the shock absorber b are coaxially aligned, eliminating manual alignment deviations. The first feeding mechanism 1 and the second feeding mechanism 2 automatically complete the delivery and positioning of the dust cover a and the shock absorber b, forming a complete automated process with the expansion mechanism 3, the lifting mechanism 4, and the pressing mechanism 5. The expansion mechanism 3 automatically opens the small-diameter end a1 of the dust cover a through six evenly distributed expansion claws 31, allowing the dust cover a to smoothly fit into the cylinder b1 of the shock absorber b, replacing the repeated stretching operation by workers, significantly reducing labor intensity, and completely eliminating the risk of hand fatigue and injury. At the same time, the radially uniform opening design avoids the risk of local deformation of the dust cover a caused by uneven force during manual stretching operations. Since the diameter of the mounting flange b2 on the cylinder b1 of the shock absorber b is larger than the outer diameter of the cylinder b1, the expansion claw 31 can mechanically expand the small diameter end a1 of the dust cover a to a size larger than the outer diameter of the mounting flange b2, ensuring sufficient expansion in one go. On this basis, after the expansion claw 31 is positioned at the mounting flange b2, the pressing mechanism 5 actively presses down on the dust cover a, which can ensure that the small diameter end a1 of the dust cover a passes over the mounting flange b2 without resistance, and without the need for tools such as flat-head pryers or levers, thus avoiding scratches on the dust cover a or the cylinder b1.The coordinated action of the expansion mechanism 3, the lifting mechanism 4, and the pressing mechanism 5 enables the dust cover a to be automatically assembled onto the shock absorber b, significantly shortening the cycle time compared to repeated manual adjustments. Uniform circumferential expansion avoids local stress concentration, and combined with the linear actions of vertical downward movement and pressing, the dust cover a only undergoes controllable elastic deformation, protecting the integrity of the dust cover a.

[0024] The expansion mechanism 3, lifting mechanism 4, and pressing mechanism 5 mentioned above are the key mechanisms for assembling the shock absorber b and the dust cover a.

[0025] Further defining the expansion mechanism 3, it comprises six circumferentially evenly distributed expansion cylinders 32 and six expansion claws 31. Each expansion claw 31 is connected to the cylinder rod of one expansion cylinder 32. After the dust cover a is fitted over the six expansion claws 31, the position of the end of the expansion claw 31 corresponds to the position of the small diameter end a1 of the dust cover a. When the cylinder rods of the six expansion cylinders 32 extend simultaneously, the six expansion claws 31 automatically and evenly expand the small diameter end a1 of the dust cover a. In this structure, the six circumferentially evenly distributed expansion cylinders 32 synchronously drive the expansion claws 31 through the cylinder rods, ensuring that the small diameter end a1 of the dust cover a is evenly stressed and expanded, avoiding local stress concentration caused by manual operation. The controllable stroke of the expansion cylinders 32 allows the opening diameter of the expansion claws 31 to be fixed, ensuring that the required expansion degree is achieved in one go. The precise correspondence between the end of the expansion claw 31 and the small diameter end a1 of the dust cover a ensures that the expansion force acts only on the area to be deformed, avoiding unnecessary stress on the large diameter end a2 or other parts.

[0026] In a preferred embodiment, all expansion cylinders 32 are horizontally mounted on the top surface of a cylinder mounting plate 33, with the cylinder rods of the expansion cylinders 32 facing outwards. The cylinder rods of the expansion cylinders 32 are connected to the fixing part 311 of the expansion claw 31 via an L-shaped connector 34. The vertical section 341 of the L-shaped connector 34 is located outside the cylinder mounting plate 33, and the horizontal section 342 is located directly below the bottom surface of the cylinder mounting plate 33. In this structure, a 35 can be provided between the horizontal section 342 of the L-shaped connector 34 and the bottom surface of the cylinder mounting plate 33 to ensure the stable opening and closing of the expansion claw 31. The horizontal mounting of the expansion cylinders 32 on the top surface of the cylinder mounting plate 33 with the cylinder rods extending horizontally outwards makes the overall structure more compact. The application of the L-shaped connector 34 cleverly converts the direction of motion, transforming the horizontal linear motion of the expansion cylinders 32 into the radial expansion motion of the expansion claw 31, eliminating the need for additional complex transmission mechanisms and reducing mechanical complexity.

[0027] Further defining the lifting mechanism 4, it consists of a connecting plate 41 and a lifting drive mechanism that drives the expansion mechanism 3 to move vertically up and down. In this structure, the lifting drive mechanism provides controllable linear motion, allowing the dust cover a to move precisely downward along the axis of the cylinder b1 of the shock absorber b.

[0028] In a preferred embodiment, the connecting plate 41 is coaxially positioned directly above the cylinder fixing plate 33, and the two are fixedly connected. The lifting drive mechanism includes a base plate 42, a servo motor 43, a lead screw 44, a lead screw nut (not shown in the figure), and an adapter frame 46. The base plate 42 is placed vertically, the servo motor 43 is mounted on the lower part of the base plate 42, and the output shaft of the servo motor 43 is connected to the bottom end of the lead screw 44. The lead screw 44 is screwed to the lead screw nut. The adapter frame 46 is positioned directly in front of the base plate 42, and the lead screw nut is fixedly connected to the adapter frame 46. The adapter frame 46 is also fixedly connected to the connecting plate 41. In this structure, a linear guide pair 47 is provided between the base plate 42 and the adapter frame 46 to improve the stability of the vertical up-and-down movement of the connecting plate 41 carrying the expansion mechanism 3. The servo motor 43 precisely adjusts the rotation angle of the lead screw 44 through closed-loop control, and works with the lead screw 45 to convert the rotational motion into high-precision linear lifting, ensuring that the vertical downward trajectory of the expansion mechanism 3 and the dust cover a is without deviation.

[0029] Further defining the design, the pressing mechanism 5 consists of a pressure plate 51 and a pressing drive mechanism that drives the pressure plate 51 to move vertically up and down. The pressure plate 51 has a central through hole 511 large enough to accommodate all the expansion claws 31 in the expanded state. After the dust cover a is fitted over the six expansion claws 31, the large-diameter end a2 of the dust cover a contacts the bottom end face of the pressure plate 51. In this structure, the central through hole 511 of the pressure plate 51 is designed to perfectly match the expansion claws 31, without affecting the normal operation of the expansion claws 31; the bottom end face of the pressure plate 51 contacts the large-diameter end a2 of the dust cover a, and the pressure plate 51 applies force evenly to the large-diameter end a2 of the dust cover a, ensuring that the small-diameter end a1 completely passes over the mounting flange b2 in one go; the pressing drive mechanism provides controllable pressing force and stroke, ensuring that the small-diameter end a1 of the dust cover a smoothly passes over the mounting flange b2; the axial force of the dust cover a is maintained during the pressing process, which can prevent torsional deformation.

[0030] In a preferred embodiment, the pressure plate 51 is coaxially positioned directly below the cylinder mounting plate 33. The downward pressing drive mechanism includes a downward pressing cylinder 52, a cylinder mounting plate 53, and a force transmission plate 54. The downward pressing cylinder 52 is vertically mounted on the cylinder mounting plate 53, with its cylinder rod pointing downwards and connected to the force transmission plate 54. The force transmission plate 54 is coaxially positioned directly above the connecting plate 41 and is connected to the pressure plate 51 via multiple force transmission rods 55 evenly distributed circumferentially. In this structure, the design of the downward pressing cylinder 52-force transmission plate 54-force transmission rods 55-pressure plate 51 ensures that the downward pressure is transmitted strictly in the vertical direction, completely avoiding the distortion and deformation of the dust cover a caused by lateral force. The force transmission plate 54, acting as an intermediate medium, evenly distributes the force of the downward pressing cylinder 52 to the multiple force transmission rods 55, achieving stable downward pressing of the pressure plate 51.

[0031] Further defined, the first feeding mechanism 1 consists of a first positioning component 11 for positioning the small-diameter end a1 of the dust cover a manually fed object and a first conveying component 12 for conveying the dust cover a on the first positioning component 11 to the expansion mechanism 3; the first positioning component 11 consists of a positioning disk 111 and six positioning claws 113 evenly arranged circumferentially on the positioning disk 111, wherein the diameter of the outer ring formed by the upper parts of all the positioning claws 113 is smaller than the port diameter of the small-diameter end a1 of the dust cover a. The lower part of the positioning claw 113 forms an outer ring that matches the port of the small-diameter end a1 of the dust cover a. The first conveying assembly 12 consists of a base 121, a fixing block 122, a rodless cylinder 123, and a cylinder with a guide rod 124. The rodless cylinder 123 is vertically mounted on the base 121 and drives the fixing block 122 to move vertically up and down. The cylinder with a guide rod 124 is horizontally mounted on the fixing block 122. The positioning disk 111 is located at the end of the guide rod 125 of the cylinder with a guide rod 124. In this structure, the smaller diameter design of the upper part of the positioning claw 113 facilitates the automatic guidance of the dust cover a into position during manual loading. The lower part of the positioning claw 113 precisely matches the small-diameter end a1 of the dust cover a, ensuring coaxial positioning. The positioning claw 113 and the expansion claw 31 do not interfere with each other.

[0032] Further defining the second feeding mechanism 2, it comprises a second positioning assembly 21 for positioning the bracket b6 mounted on the tail of the shock absorber b (for machine or manual feeding), and a second conveying assembly (not shown) for conveying the shock absorber b on the second positioning assembly 21 to directly below the expansion mechanism 3. The second positioning assembly 21 consists of a positioning seat 211 and a bracket contouring groove 212 disposed on the positioning seat 211, the shape of the bracket b6 mounted on the tail of the shock absorber b being adapted to the shape of the bracket contouring groove 212. The second conveying assembly consists of a double-speed chain and a fixed position disposed on the double-speed chain, the positioning seat 211 being fixed to the fixed position. In this structure, the bracket contouring groove 212 is perfectly matched with the tail bracket b6 of the shock absorber b, ensuring that the shock absorber b is always positioned in the standard posture with the piston rod b3 vertically upward.

[0033] The cylinder fixing plate 53, force transmission plate 54, connecting plate 41, cylinder fixing plate 33, and pressure plate 51 in the device of this utility model form a compact vertical distribution structure, which minimizes the footprint of the device; the expansion claws 31 and positioning claws 113 are both set to six, which are close to a circle, and the six expansion claws 31 can better and more evenly expand the small diameter end a1 of the dust cover a.

[0034] The semi-automatic assembly process of the dust cover and shock absorber using the equipment of this utility model is as follows: The rodless cylinder 123 actuates, causing the guide rod cylinder 124 to descend vertically to a position convenient for the worker to load materials (this position can be set to suit the height of most workers); the cylinder rod of the guide rod cylinder 124 extends, at which point the positioning plate 111 is directly below the expansion mechanism 3, and the dust cover a is manually loaded; the rodless cylinder 123 actuates, causing the guide rod cylinder 124 to rise vertically with the dust cover a, completely covering the six retracted expansion claws 31; the expansion cylinder 32 actuates, causing the expansion claws 31 to open the small diameter end a1 of the dust cover a, while the rodless cylinder 123 returns to its original position, and the cylinder rod of the guide rod cylinder 124 retracts. The robot positions the shock absorber b on the bracket contour groove 212, and the double-speed chain transports the shock absorber b directly below the expansion mechanism 3. Servo motor 43 drives lead screw 44 to rotate, causing expansion mechanism 3 to move vertically downward until the end of expansion claw 31 reaches the mounting flange b2 on the cylinder b1 of shock absorber b; downward pressure cylinder 52 drives pressure plate 51 to apply downward force to the large diameter end a2 of dust cover a, and the small diameter end a1 of dust cover a passes over mounting flange b2 under the force, and the small diameter end a1 of dust cover a hugs the cylinder b1 of shock absorber b; servo motor 43 drives lead screw 44 to rotate, causing expansion mechanism 3 to move vertically upward, and at the same time, the cylinder rod of downward pressure cylinder 52 retracts, and the cylinder rod of expansion cylinder 32 retracts. A double-speed chain transports the assembly of dust cover a and shock absorber b away for the next assembly. For the assembly, the position of dust cover a is subsequently adjusted, and after dust cover a is installed in place and both ends are fixed, the inner side of the flange mating section a3 of dust cover a is tightly against the mounting flange b2.

Claims

1. An apparatus for assembling shock absorbers and dust covers, characterized in that... include: An expansion mechanism has multiple expansion claws evenly distributed circumferentially. The large-diameter end of the dust cover is vertically fitted onto the multiple expansion claws from the end of the expansion claws, and the multiple expansion claws evenly expand the small-diameter end of the dust cover radially. A lifting mechanism is used to move the expansion mechanism vertically downward, thereby allowing the dust cover, which is opened by the expansion claw, to be vertically fitted into the cylinder of the shock absorber, until the end of the expansion claw reaches the mounting flange position on the cylinder of the shock absorber and stops moving downward; A pressing mechanism is used to press down the dust cover so that the small-diameter end of the dust cover completely passes over the mounting flange on the cylinder of the shock absorber when the end of the expanding claw reaches the mounting flange position on the cylinder of the shock absorber.

2. The equipment for assembling shock absorbers and dust covers according to claim 1, characterized in that... The device also includes: The first feeding mechanism is used to position the small-diameter end of the dust cover so that the large-diameter end of the dust cover is placed vertically with the large-diameter end facing upwards, and to transport the dust cover to the expansion mechanism. The second feeding mechanism is used to position the bracket installed on the tail of the shock absorber so that the piston rod of the shock absorber is placed vertically upwards, and to transport the shock absorber directly below the expansion mechanism so that the dust cover is aligned vertically with the shock absorber.

3. The equipment for assembling shock absorbers and dust covers according to claim 1, characterized in that... The expansion mechanism consists of multiple expansion cylinders evenly distributed circumferentially and multiple expansion claws. Each expansion claw is connected to the cylinder rod of one of the expansion cylinders. After the dust cover is fitted over the multiple expansion claws, the position of the end of the expansion claw corresponds to the position of the small diameter end of the dust cover. When the cylinder rods of the multiple expansion cylinders extend simultaneously, the multiple expansion claws automatically and evenly expand the small diameter end of the dust cover.

4. The equipment for assembling shock absorbers and dust covers according to claim 3, characterized in that... All of the expansion cylinders are horizontally mounted on the top surface of a cylinder mounting plate, with the cylinder rods of the expansion cylinders facing outwards. The cylinder rods of the expansion cylinders are connected to the fixing part of the expansion claw via an L-shaped connector. The vertical section of the L-shaped connector is located outside the cylinder mounting plate, and the horizontal section is located directly below the bottom surface of the cylinder mounting plate.

5. The equipment for assembling shock absorbers and dust covers according to claim 4, characterized in that... The lifting mechanism consists of a connecting plate and a lifting drive mechanism that drives the connecting plate to move vertically up and down with the expansion mechanism.

6. The equipment for assembling shock absorbers and dust covers according to claim 5, characterized in that... The connecting plate is coaxially positioned directly above the cylinder fixing plate, and the two are fixedly connected. The lifting drive mechanism includes a base plate, a servo motor, a lead screw, a lead screw nut, and an adapter frame. The base plate is placed vertically, the servo motor is mounted on the lower part of the base plate, the output shaft of the servo motor is connected to the bottom end of the lead screw, the lead screw is screwed to the lead screw nut, the adapter frame is positioned directly in front of the base plate, the lead screw nut is fixedly connected to the adapter frame, and the adapter frame is fixedly connected to the connecting plate.

7. The equipment for assembling shock absorbers and dust covers according to claim 6, characterized in that... The pressing mechanism consists of a pressure plate and a pressing drive mechanism that drives the pressure plate to move vertically up and down. The pressure plate has a central through hole that is large enough to accommodate all the expansion claws in the expanded state. After the dust cover is fitted over the multiple expansion claws, the large diameter end of the dust cover contacts the bottom end face of the pressure plate.

8. The equipment for assembling shock absorbers and dust covers according to claim 7, characterized in that... The pressure plate is coaxially disposed directly below the cylinder fixing plate; the downward driving mechanism includes a downward pressure cylinder, a cylinder fixing plate, and a force transmission plate. The downward pressure cylinder is vertically mounted on the cylinder fixing plate, and the cylinder rod of the downward pressure cylinder is connected to the force transmission plate with its downward direction. The force transmission plate is coaxially disposed directly above the connecting plate, and the force transmission plate is connected to the pressure plate through multiple force transmission rods evenly distributed along the circumference.

9. The equipment for assembling shock absorbers and dust covers according to claim 2, characterized in that... The first feeding mechanism consists of a first positioning component for positioning the small-diameter end of the dust cover for manual feeding and a first conveying component for conveying the dust cover on the first positioning component to the expansion mechanism; the first positioning component consists of a positioning disk and a plurality of positioning claws evenly arranged circumferentially on the positioning disk, the diameter of the outer ring formed by the upper parts of all the positioning claws is smaller than the port diameter of the small-diameter end of the dust cover, and the outer ring formed by the lower parts of all the positioning claws is adapted to the port of the small-diameter end of the dust cover; the first conveying component consists of a base, a fixed block, a rodless cylinder, and a cylinder with a guide rod, the rodless cylinder is vertically mounted on the base, the rodless cylinder drives the fixed block to move vertically up and down, the cylinder with a guide rod is horizontally mounted on the fixed block, and the positioning disk is disposed on the end of the guide rod of the cylinder with a guide rod.

10. The equipment for assembling shock absorbers and dust covers according to claim 2, characterized in that... The second feeding mechanism consists of a second positioning component for positioning a bracket mounted on the tail of the shock absorber for machine or manual feeding, and a second conveying component for conveying the shock absorber on the second positioning component to directly below the expansion mechanism; the second positioning component consists of a positioning seat and a bracket contouring groove disposed on the positioning seat, the shape of the bracket mounted on the tail of the shock absorber being adapted to the shape of the bracket contouring groove; the second conveying component consists of a double-speed chain and a fixed position disposed on the double-speed chain, the positioning seat being fixed on the fixed position.

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