Press-fitting equipment and press-fitting method for speed chain with dustproof cover

Abstract

The invention relates to chain machining equipment, and particularly discloses press-fitting equipment and a press-fitting method for a speed chain with a dustproof cover. The press-fitting equipment comprises a workbench, a mounting module, a press-fitting module, a top cover module and a driving module, the mounting module comprises a lower module and positioning needles, press-fitting stations are arranged on the lower module, the positioning needles are vertically arranged on the press-fitting stations, and the number of the positioning needles on each press-fitting station is two; the press-fitting module comprises an upper module, and the upper module is provided with a press-fitting head; the top cover module comprises ejector pins, and the ejector pins are in one-to-one correspondence with the press-fitting stations and located between the two positioning pins; and the driving module comprises a press-fitting driving mechanism and a top cover driving mechanism. According to the press-fitting equipment, one end of the dustproof cover can be pressed and deformed in the press-fitting process of the chain plate, a space is reserved for press-fitting of the chain plate, loading of the dustproof cover and press-fitting operation of the chain plate are both considered, and smooth assembly of inner chain links in the multiple chain is guaranteed.

Description

Technical Field

[0001] The invention relates to a chain processing device, in particular to a press-fitting device and a press-fitting method for a double-speed chain with a dust cover. Background Art

[0002] Multiple chain is a kind of conveyor chain, which is mainly used for material transportation and is widely used in production lines of electronic appliances, electromechanical and other industries. It has the function of increasing speed, which enables the tooling plates supporting the goods to run quickly.

[0003] The multiple chain includes inner links, outer link plates and pins, and each inner link is connected by a pin and an outer link plate. Figure 1-Figure 3 As shown, the inner chain link includes two chain plates 11, two sleeves 12 and two groups of rollers 13, wherein the rollers 13 generally include large rollers and small rollers, the diameter of the large rollers is larger than the width of the chain plates 11, and the diameter of the small rollers is smaller than the width of the chain plates 11. The large rollers are used to contact with the load-bearing platform and to support the materials to be transported, and the small rollers are used to cooperate with the sprockets for driving. Figure 1-Figure 3 As shown, it is a schematic diagram of the structure of the inner link of the multiple chain. In order to reduce the impact of impurities in the environment on the chain and increase the service life of the multiple chain, the inner link also includes a dust cover 14. The dust cover 14 can play a good shielding role for the large roller and the small roller to prevent debris from entering.

[0004] The Chinese utility model patent with the authorization announcement number CN 216784663U discloses a conveyor chain with dustproof function, which at least includes rollers, outer chain plates, inner chain plates, sleeves and pins, and also includes dust covers, which are arranged at the gap between each two adjacent rollers, and the dust covers include outer chain plate dust covers and inner chain plate dust covers. The inner chain links in the above conveyor chain are the same as the inner chain links of the press-fit multiple chain in this application.

[0005] like Figure 1-Figure 3 As shown, the two ends of the dust cover 14 of the multiple chain are hook-shaped buckles 16, and the inner chain link is placed between the two buckles 16 of the dust cover 14 and is clamped. Between the two buckles 16 is a cover body 15, which includes a middle cover corresponding to the large roller and a side cover corresponding to the small roller, wherein the middle cover is embedded between the two large rollers to fully shield and protect the large rollers.

[0006] Since the chain plate 11 and the sleeve 12 need to be press-fitted by interference fit, the chain plate 11 and the dust cover 14 are clamped by the buckle 16, and the press-fitting direction of the chain plate 11 and the sleeve 12 is perpendicular to the installation direction of the dust cover 14. At the same time, the roller 13 needs to be inserted before the chain plate 11 is press-fitted, and the middle cover needs to be embedded between the two large rollers. There is a certain contradiction between the installation of the dust cover 14 and the press-fitting of the chain plate 11. If the dust cover 14 is embedded between the two large rollers first, the end of the dust cover 14 will hinder the press-fitting of the chain plate 11. If the press-fitting operation of the chain plate 11 is completed first, there is not enough space for the dust cover 14 to be embedded between the two rollers 13.

[0007] In view of the special structure of the above-mentioned multiple chains and the difficulties in the above-mentioned assembly process, the present application provides a pressing device and a pressing method for a multiple-speed chain with a dust cover, which can realize the pressing of the inner links in the multiple chains, taking into account the installation of the dust cover and the pressing operation of the chain plate. Summary of the invention

[0008] The technical problem to be solved by the present invention is to provide a press-fitting device and a press-fitting method for a double-speed chain with a dust cover, wherein one end of the dust cover can be pressed and deformed during the press-fitting process of the chain plate to leave space for the press-fitting of the chain plate, while taking into account both the installation of the dust cover and the press-fitting operation of the chain plate, thereby ensuring the smooth assembly of the inner links in the multiple chain.

[0009] In order to solve the above technical problems, the present invention provides the following technical solutions: a press-fitting device for a double-speed chain with a dust cover, comprising at least: Workbench; An installation module, the installation module includes a lower module and a positioning pin, the lower module is arranged on a workbench; the lower module is provided with at least one press-fitting station, the positioning pin is vertically arranged at the press-fitting station, and the number of positioning pins on each press-fitting station is two; A press-fitting module, wherein the press-fitting module comprises an upper module, and the upper module is provided with a press-fitting head; the press-fitting head corresponds to the press-fitting station one by one and is disposed opposite to each other up and down; A top cover module, wherein the top cover module comprises an ejector pin, and the ejector pin is horizontally arranged on one side of the lower module; the ejector pin corresponds to the press-fitting station one by one and is located between two positioning pins; The driving module comprises a press-fitting driving mechanism and a top cover driving mechanism. The press-fitting driving mechanism is used to drive the upper module to move up and down, and the top cover driving mechanism is used for the axial movement of the ejector pin.

[0010] Before the press-fitting operation, first select a single chain plate and two sleeves from each group of inner chain link accessories, and press-fit to form a plate-tube assembly. During press-fitting, first insert the individual chain plates in each group of inner chain link accessories into the positioning pins through the pin holes. Then install the rollers, dust covers and plate-tube assemblies into the press-fitting station, wherein the rollers are sleeved outside the sleeves, and the sleeves are sleeved into the positioning pins, wherein the upper end of the dust cover is connected to the chain plate on the plate-tube assembly. Finally, the drive module drives the ejector pin to move horizontally, and presses and deforms the lower end of the dust cover until the lower end is deformed to be horizontally misaligned with the corresponding chain plate. The drive module drives the upper module to move downward until the press-fitting head contacts the plate-tube assembly, and applies pressure to the plate-tube assembly, and the sleeve moves downward to press-fit the corresponding chain plate. After the press-fitting operation is completed, the drive module is reset, the pressure applied by the ejector pin on the dust cover is removed, the lower end of the dust cover is reset, and connected to the corresponding chain plate, completing the press-fitting operation.

[0011] The roller can be inserted into the positioning pins in sequence after the individual chain plates are inserted into the positioning pins, and finally the dust cover and the plate-tube assembly are inserted into the assembly for matching. The roller can also be matched with the positioning pins as a whole after the dust cover and the plate-tube assembly are matched.

[0012] The press-fitting equipment of the present application can press and deform one end of the dust cover during the chain plate press-fitting process, leaving space for the chain plate press-fitting, taking into account both the installation of the dust cover and the press-fitting operation of the chain plate, ensuring the smooth assembly of the inner links in the multiple chains.

[0013] Preferably, the press-fitting station is provided with a lower pressure-bearing surface, the lower pressure-bearing surface is provided with a head-exposing groove, and the positioning pin is arranged in the head-exposing groove. The arrangement of the head-exposing groove can leave enough space for the press-fitting of the sleeve to avoid interference between the lower end of the sleeve and the lower module.

[0014] Preferably, the positioning needle comprises a needle body and a press-fit elastic member, the lower module is provided with a mounting hole, the needle body is slidably disposed in the mounting hole, and the press-fit elastic member is disposed between the needle body and the lower module.

[0015] Preferably, the needle body comprises a first segment and a second segment from top to bottom along the axial direction, and the diameter of the first segment is smaller than that of the second segment; under normal conditions, the second segment extends out of the exposed groove.

[0016] The first segment corresponds to the sleeve, and its diameter matches the inner diameter of the sleeve; the second segment corresponds to the chain plate, and its diameter corresponds to the pin hole of the chain plate. During press-fitting, the first segment is used to position the sleeve, and the second segment is used to position the chain plate. The pin hole and the sleeve are forced to be aligned through the needle body to ensure smooth press-fitting. During the press-fitting process, the sleeve squeezes the second segment, and the needle body overcomes the elastic force of the press-fitting elastic part and moves axially. While ensuring that the press-fitting is completed, it can avoid the second segment from expanding the sleeve, thereby ensuring the molding quality.

[0017] Preferably, an ejection channel is provided on the upper surface of the lower module, the ejection channel corresponds to the press-fitting station one by one, and is located between two ejector pins, and the ejection channel runs through the lower module in the horizontal direction. The dust cover is aligned with the ejection channel, and the ejection channel can leave enough space for the top pressing deformation movement of the dust cover.

[0018] Preferably, the press-fitting head is provided with two press-fitting bosses, which are disconnected from each other. The two press-fitting bosses correspond to the two sleeves one by one, and the disconnection position between the two press-fitting bosses is aligned with the dust cover.

[0019] Preferably, the top cover module further comprises a guide block, which is arranged on the workbench and located at one side of the lower module, and the ejector pin is axially slidably connected to the guide block. The guide block supports and guides the ejector pin to ensure smooth operation of the top cover.

[0020] Preferably, the top cover module further comprises a top cover slider and an oblique plug-in, wherein the top cover slider is horizontally slidably arranged on the workbench; the oblique plug-in is fixedly connected to the upper module and extends downward, and the top cover slider is located below the oblique plug-in; the lower end of the oblique plug-in is provided with an insertion surface, and the insertion surface is inclined toward the lower module; The press-fitting drive mechanism and the top cover drive mechanism include the same drive member, and the drive member is used to drive the upper module to move up and down.

[0021] The oblique plug-in is connected to the upper module, and moves up and down synchronously with the upper module. The up and down movement of the oblique plug-in is further converted into the horizontal movement of the top cover slider through the plug-in surface, thereby pushing the ejector pin to complete the top cover operation. The same driving part is used to drive the press-fitting operation and the top cover operation, which can ensure the stability of the rhythm of the two actions. Only by reasonably setting the specifications and dimensions of the oblique plug-in and the ejector pin can the smooth and orderly completion of the two actions be ensured.

[0022] Preferably, the top cover driving mechanism further comprises a reset unit, and the top cover slider is connected to the reset unit; under normal conditions, the ejector pin and the lower module are staggered.

[0023] After the press-fitting operation is completed, the reset unit drives the top cover slider and the ejector pin to reset, leaving enough space for the reset of the dust cover and the separation of the inner chain link and the positioning pin.

[0024] A press-fitting method for a double-speed chain with a dust cover, using the press-fitting device as described above; At least the following steps are included: S1. Pre-assembly: According to the number of press-fitting stations, select the corresponding number of inner chain link accessories, each set of inner chain link accessories includes two chain plates, two sleeves and two sets of rollers; select a single chain plate and two sleeves from each set of inner chain link accessories, and press-fit to form a plate-cylinder assembly; S2. Installation: Install the unpressed chain plates in each group of inner chain link accessories into the press-fitting station, wherein the pin holes on the chain plates are inserted into the positioning pins; install the rollers, dust covers and plate-tube assembly into the press-fitting station, wherein the rollers are sleeved outside the sleeves, the sleeves are sleeved into the positioning pins, wherein the upper end of the dust cover is connected to the chain plates on the plate-tube assembly; S3. Pressing: The driving module drives the ejector pin to move horizontally and press the lower end of the dust cover to deform until the lower end is deformed to be horizontally misaligned with the corresponding chain plate; The driving module drives the upper module to move downward until the pressing head contacts the plate-cylinder assembly and applies pressure to the plate-cylinder assembly, and the sleeve moves downward and presses the corresponding chain plate; the driving module resets, the pressure applied by the ejector pin on the dust cover is removed, the lower end of the dust cover resets, and is connected to the corresponding chain plate to complete the pressing operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the structure of a double-speed chain with a dust cover; Figure 2 This is an exploded view of the double-speed chain with a dust cover; Figure 3 It is a cross-sectional view of a double-speed chain with a dust cover; Figure 4 It is a structural schematic diagram of the press-fitting equipment of the double-speed chain with dust cover in this embodiment; Figure 5 This is a schematic structural diagram of another viewing angle of the press-fitting device for the double-speed chain with a dust cover in this embodiment; Figure 6 It is a side view of the press-fitting device of the double-speed chain with dust cover in this embodiment; Figure 7 This is a schematic diagram of the structure of the installation module in the press-fitting device of the double-speed chain with dust cover in this embodiment; Figure 8 This is a schematic diagram of the structure of the needle body in the press-fitting device with a double-speed chain with a dust cover in this embodiment; Fig. 9 This is a schematic diagram of the structure of the top cover module and the top cover driving mechanism in the press-fitting device with a dust cover double-speed chain in this embodiment; Fig.10 This is a structural schematic diagram of the plate-cylinder assembly in step S1 of the press-fitting method of the double-speed chain with a dust cover in this embodiment; Fig.11 It is a structural schematic diagram of the state in which the inner chain link is installed in the press-fitting station in the press-fitting method of the double-speed chain with dust cover in this embodiment; Fig.12 Schematic diagram of the structure of the press-fitting step in the press-fitting method of the double-speed chain with dust cover in this embodiment, at which the lower end buckle of the dust cover is deformed by the ejector pin; Fig.13 It is a structural schematic diagram of the press-fitting completion state in the press-fitting method of the double-speed chain with a dust cover in this embodiment. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. Example

[0027] like Figure 4-Figure 6 As shown, a press-fitting device for a double-speed chain with a dust cover includes a workbench 4, a mounting module, a press-fitting module, a top cover module and a driving module.

[0028] like Figure 4-Figure 7 As shown, the installation module includes a lower module 5 and a positioning pin 8, and the lower module 5 is arranged on a workbench 4. The lower module 5 is provided with at least one press-fitting station, and the press-fitting station is provided with a lower pressure-bearing surface, and the lower pressure-bearing surface is provided with a head-exposing groove 52, and the positioning pin 8 is arranged in the head-exposing groove 52.

[0029] Each press-fitting station is correspondingly installed with an inner chain link 1, and a single inner chain link 1 can be selected for processing, or multiple inner chain links 1 can be processed simultaneously. The lower pressure-bearing surface is used to position the chain plate and bear the load during the press-fitting process. The setting of the exposed groove 52 can leave enough space for the press-fitting of the sleeve to avoid interference between the lower end of the sleeve and the lower module 5.

[0030] like Figure 7 As shown, the positioning pin 8 is vertically arranged at the press-fitting station, and the number of positioning pins 8 at each press-fitting station is two. Specifically, the positioning pin 8 includes a pin body 81 and a press-fitting elastic member 82. The lower module 5 is provided with a mounting hole, the pin body 81 is slidably arranged in the mounting hole, and the press-fitting elastic member 82 is arranged between the pin body 81 and the lower module 5. Figure 8 As shown, the needle body 81 includes a first segment 811 and a second segment 812 from top to bottom along the axial direction, and the diameter of the first segment 811 is smaller than that of the second segment 812. In normal state, the second segment 812 is extended out of the head-exposing groove 52.

[0031] The first segment 811 corresponds to the sleeve 12, and its diameter matches the inner diameter of the sleeve; the second segment 812 corresponds to the chain plate 11, and its diameter corresponds to the pin hole of the chain plate. During press-fitting, the first segment 811 is used to position the sleeve, and the second segment 812 is used to position the chain plate. The pin hole and the sleeve are forced to be aligned by the needle body 81, thereby ensuring smooth press-fitting. During the press-fitting process, the sleeve squeezes the second segment 812, and the needle body 81 overcomes the elastic force of the press-fitting elastic member 82 and moves axially. While ensuring that the press-fitting is completed, it can avoid the second segment 812 from expanding the sleeve, thereby ensuring the molding quality.

[0032] like Figure 4-Figure 6 As shown, the press-fitting module includes an upper module 3, and the upper module 3 is provided with a press-fitting head 2. The press-fitting head 2 corresponds to the press-fitting station one by one and is opposed to each other up and down. Specifically, the press-fitting head 2 is provided with two press-fitting bosses, and the two press-fitting bosses are disconnected. The two press-fitting bosses correspond to the two sleeves one by one, and the disconnection position between the two press-fitting bosses is aligned with the dust cover.

[0033] like Figure 6 and Fig. 9 As shown, the top cover module includes an ejector pin 72, which is horizontally arranged on one side of the lower module 5. The ejector pin 72 corresponds to the press-fitting station one by one and is located between the two positioning pins 8. Specifically, the top cover module also includes a guide block 71, which is arranged on the workbench 4 and located on one side of the lower module 5. The ejector pin 72 is axially slidably connected to the guide block 71. The guide block 71 supports and guides the ejector pin 72 to ensure the smooth operation of the top cover.

[0034] Further, such as Figure 7 As shown, the upper surface of the lower module 5 is provided with an ejection channel 51, which corresponds to the press-fitting station one by one and is located between two ejector pins 72. The ejection channel 51 is arranged to penetrate the lower module 5 in the horizontal direction. The dust cover is aligned with the ejection channel 51, and the ejection channel 51 can leave enough space for the pressing and deformation movement of the dust cover.

[0035] like Figure 4-Figure 6 As shown, the driving module includes a press-fitting driving mechanism and a top cover driving mechanism. The press-fitting driving mechanism is used to drive the upper module 3 to move up and down, and the top cover driving mechanism is used for the axial movement of the ejector pin 72.

[0036] like Figure 6 and Fig. 9As shown, as a specific embodiment, the top cover module further includes a top cover slider 61 and an oblique plug-in 62, and the top cover slider 61 is horizontally slidably arranged on the workbench 4. The oblique plug-in 62 is fixedly connected to the upper module 3 and extends downward, and the top cover slider 61 is located below the oblique plug-in 62. The lower end of the oblique plug-in 62 is provided with an insertion surface 63, and the insertion surface 63 is inclined toward the direction of the lower module 5. The press-fitting drive mechanism and the top cover drive mechanism include the same drive member, and the drive member is used to drive the upper module 3 to move up and down.

[0037] The oblique plug 62 is connected to the upper module 3, and moves up and down synchronously with the upper module 3, and further converts the up and down movement of the oblique plug 62 into the horizontal movement of the top cover slider 61 through the plug-in surface, thereby pushing the ejector pin 72 to move to complete the top cover operation. The same driving member is used to drive the press-fitting operation and the top cover operation, which can ensure the stability of the rhythm of the two actions. Only by reasonably setting the specifications and dimensions of the oblique plug 62 and the ejector pin 72 can the two actions be completed smoothly and orderly.

[0038] like Figure 6 and Fig. 9 As shown, a roller 64 is provided at one end of the top cover slider 61 away from the lower module 5, and the roller 64 corresponds to the insertion surface 63. When the oblique plug-in 62 moves downward, the insertion surface 63 contacts the roller 64 and rolls relative to each other, thereby pushing the top cover slider 61 to translate. By providing the roller 64, the friction between the oblique plug-in 62 and the top cover slider 61 can be reduced, the translation drive of the top cover slider 61 is smoother, and the wear of the oblique plug-in 62 and the top cover slider 61 can also be reduced.

[0039] Specifically, the top cover driving mechanism further includes a reset unit (not shown in the figure), and the top cover slider 61 is connected to the reset unit. Under normal conditions, the ejector pin 72 is offset from the lower module 5. The reset unit includes a top cover elastic member. After the press-fitting operation is completed, the reset unit drives the top cover slider 61 and the ejector pin 72 to reset, leaving enough space for the reset of the dust cover and the separation operation of the inner chain link 1 and the positioning pin 8.

[0040] Before the press-fitting operation, first select a single chain plate 11 and two sleeves 12 from each group of inner chain link 1 accessories, and press-fit to form a plate-tube assembly. During press-fitting, first insert the single chain plate 12 from each group of inner chain link 1 accessories into the positioning pin 8 through the pin hole. Then install the roller 12, the dust cover 14 and the plate-tube assembly into the press-fitting station, wherein the roller 13 is sleeved outside the sleeve 12, and the sleeve 12 is sleeved into the positioning pin 8, wherein the upper end of the dust cover 14 is connected to the chain plate 11 on the plate-tube assembly. Finally, the drive module drives the ejector pin 72 to move horizontally, and presses and deforms the lower end of the dust cover 14 until the lower end is deformed to be horizontally misaligned with the corresponding chain plate 11, and the drive module drives the upper module 3 to move downward until the press-fitting head 2 contacts the plate-tube assembly and applies pressure to the plate-tube assembly, and the sleeve 12 moves downward to press-fit the corresponding chain plate 11. After the press-fitting operation is completed, the drive module is reset, the pressure applied by the ejector pin 72 on the dust cover 14 is removed, the lower end of the dust cover 14 is reset and connected to the corresponding chain plate 11, and the press-fitting operation is completed.

[0041] The roller can be inserted into the positioning pin 8 in sequence after the separate chain plate is inserted into the positioning pin 8, and finally the dust cover and the plate cylinder assembly are inserted into the matching. The roller can also be matched with the positioning pin 8 as a whole after the dust cover and the plate cylinder assembly are matched.

[0042] The press-fitting equipment of the present application can press and deform one end of the dust cover during the chain plate press-fitting process, leaving space for the chain plate press-fitting, taking into account both the installation of the dust cover and the press-fitting operation of the chain plate, ensuring the smooth assembly of the inner link 1 in the multiple chain.

[0043] A press-fitting method for a double-speed chain with a dust cover, using the press-fitting device as described above; At least the following steps are included: S1. Pre-assembly: According to the number of press-fitting stations, select the corresponding number of inner chain link 1 accessories. Each group of inner chain link 1 accessories includes two chain plates 11, two sleeves 12 and two groups of rollers 13. Select a single chain plate 11 and two sleeves 12 from each group of inner chain link 1 accessories, and press-fit to form a plate-cylinder assembly, such as Fig.10 The plate-cylinder assembly is shown.

[0044] S2. Installation: Install the unpressed chain plates 11 in each group of inner chain link 1 accessories into the press-fitting station, wherein the pin hole on the chain plate 11 is inserted into the positioning needle 8, and the pin hole matches the second segment 812 of the needle body 81. Install the roller 13, the dust cover 14 and the plate-cylinder assembly into the press-fitting station, wherein the roller 13 is sleeved outside the sleeve 12, and the sleeve 12 is sleeved into the positioning needle 8, wherein the upper end of the dust cover 14 is connected to the chain plate 11 on the plate-cylinder assembly, the inner hole of the sleeve 12 matches the first segment 811 of the positioning needle 8, and the lower end of the sleeve 12 abuts against the end of the second segment 812. The pin hole and the sleeve 12 are forced to be aligned through the needle body 81. That is, Fig.11Status shown.

[0045] S3. Pressing: The driving module works, the upper module 3 moves downward, and the oblique plug 62 moves downward synchronously. The oblique plug 62 first contacts the top cover slider 61, and drives the ejector pin 72 to move horizontally. The ejector pin 72 contacts the dust cover 14, and presses and deforms the lower end of the dust cover 14 until the lower end is deformed to be horizontally misaligned with the corresponding chain plate 11.

[0046] The upper module 3 continues to move downward until the press-fitting head 2 contacts the plate-tube assembly, and the press-fitting head 2 applies pressure to the plate-tube assembly, and the sleeve 12 moves downward to press-fit the corresponding chain plate 11. During the downward movement of the sleeve 11, the positioning pin 8 squeezes the press-fitting elastic member 82, and the press-fitting elastic member 82 moves downward, leaving space for the sleeve 12 to press-fit the chain plate 11. Fig.12 Status shown.

[0047] The drive module is reset, the upper module 3 moves upward, the press-fitting head 2 and the oblique plug 62 move upward synchronously, the ejector pin 72 is driven to retreat by the reset unit, the pressure exerted by the ejector pin 72 on the dust cover 14 is removed, the lower end of the dust cover 14 is reset, and the buckle 16 at the lower end of the dust cover 14 is engaged from the outside of the chain plate 11, so as to realize the engagement between the lower chain plate 11 and the dust cover 14, and complete the entire press-fitting operation. During the upward movement of the upper module 3, the press-fitting elastic member 82 drives the positioning pin 8 upward and lifts up the inner chain link 1 that has been press-fitted. That is, Fig.13 Status shown.

[0048] S4. Unloading: Remove the inner chain link 1 as a whole upward from the positioning pin 8.

[0049] In short, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A press-fitting device for a double-speed chain with a dust cover, characterized in that: At least: Workbench; An installation module, the installation module includes a lower module and a positioning pin, the lower module is arranged on a workbench; the lower module is provided with at least one press-fitting station, the positioning pin is vertically arranged at the press-fitting station, and the number of positioning pins on each press-fitting station is two; A press-fitting module, wherein the press-fitting module comprises an upper module, and the upper module is provided with a press-fitting head; the press-fitting head corresponds to the press-fitting station one by one and is disposed opposite to each other up and down; A top cover module, wherein the top cover module comprises an ejector pin, and the ejector pin is horizontally arranged on one side of the lower module; the ejector pin corresponds to the press-fitting station one by one and is located between two positioning pins; The driving module comprises a press-fitting driving mechanism and a top cover driving mechanism. The press-fitting driving mechanism is used to drive the upper module to move up and down, and the top cover driving mechanism is used for the axial movement of the ejector pin.

2. The press-fitting device according to claim 1, characterized in that: The press-fitting station is provided with a lower pressure-bearing surface, the lower pressure-bearing surface is provided with a head-exposing groove, and the positioning pin is arranged in the head-exposing groove.

3. The press-fitting device according to claim 1, characterized in that: The positioning needle comprises a needle body and a press-fit elastic member. The lower module is provided with a mounting hole, the needle body is slidably arranged in the mounting hole, and the press-fit elastic member is arranged between the needle body and the lower module.

4. The press-fitting device according to claim 3, characterized in that: The needle body comprises a first segment and a second segment from top to bottom along the axial direction, and the diameter of the first segment is smaller than that of the second segment; under normal conditions, the second segment extends out of the exposed groove.

5. The press-fitting device according to claim 1, characterized in that: An ejection channel is provided on the upper surface of the lower module. The ejection channel corresponds to the press-fitting station one by one and is located between two ejector pins. The ejection channel penetrates the lower module in a horizontal direction.

6. The press-fitting device according to claim 1, characterized in that: The press-fitting head is provided with two press-fitting bosses, which are disconnected from each other.

7. The press-fitting device according to claim 1, characterized in that: The top cover module also includes a guide block, which is arranged on the workbench and located at one side of the lower module, and the ejector pin is axially slidably connected to the guide block.

8. The press-fitting device according to any one of claims 1 to 6, characterized in that: The top cover module further comprises a top cover slider and an oblique plug-in, wherein the top cover slider is horizontally slidably arranged on the workbench; the oblique plug-in is fixedly connected to the upper module and extends downward, and the top cover slider is located below the oblique plug-in; an insertion surface is provided at the lower end of the oblique plug-in, and the insertion surface is inclined toward the lower module; The press-fitting drive mechanism and the top cover drive mechanism include the same drive member, and the drive member is used to drive the upper module to move up and down.

9. The press-fitting device according to claim 8, characterized in that: The top cover driving mechanism further comprises a reset unit, and the top cover slider is connected to the reset unit; under normal conditions, the ejector pin and the lower module are arranged in a staggered manner.

10. A method for press-fitting a double-speed chain with a dust cover, characterized in that: Using a press-fitting device as described in any one of claims 1 to 9; At least the following steps are included: S1. Pre-assembly: According to the number of press-fitting stations, select the corresponding number of inner chain link accessories, each set of inner chain link accessories includes two chain plates, two sleeves and two sets of rollers; select a single chain plate and two sleeves from each set of inner chain link accessories, and press-fit to form a plate-cylinder assembly; S2. Installation: Install the unpressed chain plates in each group of inner chain link accessories into the press-fitting station, wherein the pin holes on the chain plates are inserted into the positioning pins; install the rollers, dust covers and plate-tube assembly into the press-fitting station, wherein the rollers are sleeved outside the sleeves, the sleeves are sleeved into the positioning pins, wherein the upper end of the dust cover is connected to the chain plates on the plate-tube assembly; S3. Pressing: The driving module drives the ejector pin to move horizontally and press the lower end of the dust cover to deform until the lower end is deformed to be horizontally misaligned with the corresponding chain plate; The driving module drives the upper module to move downward until the press-fitting head contacts the plate-cylinder assembly and applies pressure to the plate-cylinder assembly, and the sleeve moves downward to press-fit the corresponding chain plate; The drive module is reset, the pressure applied by the ejector pin on the dust cover is removed, the lower end of the dust cover is reset and connected with the corresponding chain plate to complete the press-fitting operation.

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