Sleeve assembling device and expansion screw assembling machine

Abstract

The utility model relates to the technical field of expansion screw assembling, and particularly discloses a sleeve assembling device and an expansion screw assembling machine. A rotating platform; the screw clamps are circumferentially arrayed on the rotating platform and are provided with contraction grooves and limiting grooves which are communicated in sequence; the feeding track is installed on the support, inclines towards the screw clamp and is used for conveying the sleeve; the sleeve releasing assembly is installed on the feeding track and used for releasing the sleeves in the feeding track one by one so that the sleeves can be arranged on the screw rods in the corresponding screw clamps in a sleeving mode; the rotating platform is used for driving the screw clamp to rotate; the contraction groove is located above the limiting groove and contracts towards the limiting groove. The limiting groove is used for limiting the placement position of the screw rod; the assembling device can effectively solve the problems that the labor intensity is high and the sleeve assembling efficiency is low due to the fact that the sleeve needs to be assembled on the screw rod in a manual mode, and therefore the assembling efficiency of the expansion screw is effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of expansion screw assembly, and particularly relates to a sleeve assembly device and an expansion screw assembly machine. Background Art

[0002] refer to Figure 1 , the existing expansion screws are made of screws ( Figure 1 a) in the sleeve ( Figure 1 b) Flat gasket ( Figure 1 c), spring meson ( Figure 1 d) and nuts ( Figure 1 e) in the figure, the existing assembly process of the expansion screw is: sleeve the sleeve, flat washer and spring meson in sequence outside the screw; tighten the nut on the screw. In the assembly process of the expansion screw, the existing technology needs to manually sleeve the sleeve on the screw, so the existing technology has the problems of high labor intensity and low sleeve assembly efficiency due to the need to manually assemble the sleeve on the screw, which leads to a decrease in the assembly efficiency of the expansion screw.

[0003] Therefore, the existing technology needs to be improved and developed. Utility Model Content

[0004] The purpose of the present application is to provide a sleeve assembly device and an expansion screw assembly machine, which can effectively solve the problems of high labor intensity and low sleeve assembly efficiency caused by the need to manually assemble the sleeve onto the screw, thereby effectively improving the assembly efficiency of the expansion screw.

[0005] In a first aspect, the present application provides a sleeve assembly device, comprising:

[0006] Bracket;

[0007] Rotating platform;

[0008] A plurality of screw fixtures are arranged in a circular array on a rotating platform, and have shrinkage grooves and limit grooves connected in sequence;

[0009] A feeding track, mounted on the bracket and inclined toward the screw fixture, for conveying the sleeve;

[0010] A sleeve release assembly is installed on the feeding track and is used to release the sleeves in the feeding track one by one so as to put the sleeves on the screws in the corresponding screw fixtures;

[0011] The rotating platform is used to drive the screw fixture to rotate;

[0012] The contraction groove is located above the limiting groove, and the contraction groove contracts toward the limiting groove;

[0013] The limiting groove is used to limit the placement position of the screw.

[0014] The present application provides a sleeve assembly device, including a bracket, a rotating platform, a screw clamp, a feeding track and a sleeve release assembly. Since the sleeve release assembly can release the sleeves in the feeding track one by one, the released sleeves are sleeved on the screw in the corresponding screw clamp under the guiding action of the contraction groove. Therefore, the present application can complete the assembly of the sleeve through the sleeve release assembly and the screw clamp. Since the present application can drive the screw clamp to rotate by the rotating platform to move the screw that has not completed the sleeve assembly to the bottom of the feeding track output end and move the next screw clamp with the screw placed to the bottom of the feeding track output end, the present application can continuously and automatically assemble the sleeve, that is, the present application does not need to assemble the sleeve on the screw manually, thereby effectively solving the problems of high labor intensity and low sleeve assembly efficiency caused by the need to assemble the sleeve on the screw manually, thereby effectively improving the assembly efficiency of the expansion screws.

[0015] Furthermore, the sleeve release assembly includes a first limit assembly and a second limit assembly, both of which are installed on the feeding track, the distance between the first limit assembly and the output end of the feeding track is smaller than the distance between the second limit assembly and the output end of the feeding track, the distance between the first limit assembly and the second limit assembly is larger than the length of one sleeve and smaller than the length of two sleeves, the first limit assembly is used to limit the placement position of the penultimate sleeve, and the second limit assembly is used to tighten the penultimate sleeve.

[0016] Furthermore, the end of the feeding track has a bent guide section.

[0017] Since the end of the feeding track of the technical solution has a bending guide section, the bending guide section can reduce the angle between the sleeve and the screw when the sleeve slides out of the feeding track, so that the sleeve can be smoothly sleeved on the screw. Therefore, the technical solution can effectively avoid the situation where the sleeve cannot be sleeved on the screw because the angle between the sleeve and the screw is too large when the sleeve slides out of the feeding track.

[0018] Furthermore, the inclination angle of the feeding track is 35°-55°.

[0019] This technical solution sets the inclination angle of the feeding track to 35°-55°. This technical solution can effectively avoid the situation where the sleeve moves too slowly in the feeding track due to the inclination angle of the feeding track being too small, resulting in slow release and assembly speeds of the sleeve, and the sleeve release assembly releases multiple sleeves at one time due to the inclination angle of the feeding track being too large.

[0020] Furthermore, the sleeve assembly device also includes an in-place detection component, which is installed on the feeding track and is used to detect whether there are enough sleeves in the feeding track.

[0021] Furthermore, the sleeve assembly device also includes a sleeve supply assembly, and the output end of the sleeve supply assembly is connected to the input end of the feeding track.

[0022] Since the output end of the sleeve supply assembly is connected to the input end of the feed track, the technical solution can utilize the sleeve supply assembly to automatically supply sleeves to the feed track, thereby effectively avoiding the problem of high labor intensity caused by the need to manually supply sleeves to the feed track.

[0023] Furthermore, the screw clamp includes a pneumatic finger, a placement frame and a positioning jig. The pneumatic finger is fixed on a rotating platform. The positioning jig has a shrinkage groove and a limit groove connected in sequence. The positioning jig is fixed on the placement frame. The placement frame has a card slot. The pneumatic finger is detachably fixedly connected to the placement frame by driving and pressing the card slot.

[0024] This technical solution can realize the rapid fixation or rapid disassembly of the placement rack and the positioning fixture, thereby effectively improving the convenience of fixation and disassembly of the positioning fixture.

[0025] Furthermore, the placement rack includes two protective clamps, which are respectively located on both sides of the positioning fixture, and the positioning fixture is detachably mounted on the protective clamps.

[0026] Since the positioning jig is detachably mounted on the guard clamp, the technical solution can replace the placement frame by removing the positioning jig from the guard clamp and installing a new positioning jig on the guard clamp, so that the screw clamp can be suitable for expansion screws of different sizes, thereby effectively improving the versatility of the sleeve assembly device.

[0027] Furthermore, the cross-sectional shapes of the contraction groove and the limiting groove are both circular.

[0028] In a second aspect, the utility model provides an expansion screw assembly machine, which includes a sleeve assembly device provided in the first aspect.

[0029] The utility model provides an expansion screw assembly machine, including a sleeve assembly device, which includes a bracket, a rotating platform, a screw clamp, a feeding track and a sleeve releasing component. Since the sleeve releasing component can release the sleeves in the feeding track one by one, the released sleeves are sleeved on the screw rod in the corresponding screw clamp under the guiding action of the shrinkage groove. Therefore, the present application can complete the assembly of the sleeve through the sleeve releasing component and the screw clamp. Since the present application can drive the screw clamp to rotate by the rotating platform to move the screw rod that has not completed the sleeve assembly to the bottom of the feeding track output end and move the next screw clamp with the screw rod placed thereon to the bottom of the feeding track output end, the present application can continuously and automatically assemble the sleeve, that is, the present application does not need to assemble the sleeve on the screw rod manually, thereby effectively solving the problems of high labor intensity and low sleeve assembly efficiency caused by the need to assemble the sleeve on the screw rod manually, thereby effectively improving the assembly efficiency of the expansion screws.

[0030] As can be seen from the above, the utility model provides a sleeve assembly device and an expansion screw assembly machine, including a bracket, a rotating platform, a screw clamp, a feeding track and a sleeve release component. Since the sleeve release component can release the sleeves in the feeding track one by one, the released sleeves are sleeved on the screw in the corresponding screw clamp under the guiding action of the shrinkage groove. Therefore, the present application can complete the assembly of the sleeve through the sleeve release component and the screw clamp. Since the present application can drive the screw clamp to rotate by the rotating platform to move the screw that has not completed the sleeve assembly to the bottom of the feeding track output end and move the next screw clamp with the screw placed to the bottom of the feeding track output end, the present application can continuously and automatically assemble the sleeve, that is, the present application does not need to assemble the sleeve on the screw manually, thereby effectively solving the problems of high labor intensity and low sleeve assembly efficiency caused by the need to assemble the sleeve on the screw manually, thereby effectively improving the assembly efficiency of the expansion screws. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural diagram of the expansion screw.

[0032] Figure 2 A schematic structural diagram of a sleeve assembly device provided in an embodiment of the present application.

[0033] Figure 3 A schematic diagram of the structure of the screw clamp provided in an embodiment of the present application.

[0034] Explanation of the numbers: 1. Bracket; 2. Rotating platform; 3. Screw clamp; 31. Pneumatic finger; 32. Placement rack; 33. Positioning fixture; 4. Feeding track; 5. Sleeve release assembly; 51. First limit assembly; 52. Second limit assembly; 6. In-place detection assembly; 7. Sleeve supply assembly; 8. Shrinkage groove; 9. Limit groove. DETAILED DESCRIPTION

[0035] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0036] The disclosure below provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0037] In a first aspect, the present application provides a sleeve assembly device, comprising:

[0038] Bracket 1;

[0039] Rotating platform 2;

[0040] A plurality of screw fixtures 3 are arranged in a circular array on the rotating platform 2, and have shrinkage grooves 8 and limiting grooves 9 which are connected in sequence;

[0041] A feeding track 4, mounted on the bracket 1 and inclined toward the screw fixture 3, for conveying the sleeve;

[0042] The sleeve release assembly 5 is installed on the feeding track 4 and is used to release the sleeves in the feeding track 4 one by one so as to put the sleeves on the screws in the corresponding screw clamps 3;

[0043] The rotating platform 2 is used to drive the screw fixture 3 to rotate;

[0044] The contraction groove 8 is located above the limiting groove 9, and the contraction groove 8 contracts toward the limiting groove 9;

[0045] The limiting groove 9 is used to limit the placement position of the screw.

[0046] The rotating platform 2 of this embodiment can be an existing electric rotating platform or other device that can drive the screw clamp 3 to rotate. The rotating platform 2 of this embodiment is preferably a divider. The screw clamp 3 of this embodiment is installed on the rotating platform 2. The number of screw clamps 3 is multiple, and multiple screw clamps 3 are arranged in a circular array on the divider. The screw clamp 3 has a shrinkage groove 8 and a limit groove 9 that are connected in sequence. The shrinkage groove 8 is located above the limit groove 9, and the shrinkage groove 8 shrinks toward the limit groove 9. The limit groove 9 is used to limit the placement position of the screw. Since the limit groove 9 can limit the placement position of the screw, this embodiment can effectively avoid the situation where the sleeve cannot be smoothly sleeved on the screw due to displacement of the screw during the sleeve assembly process. Since the shrinkage groove 8 shrinks toward the limit groove 9, during the sleeve assembly process, the shrinkage groove 8 can guide the sleeve so that the sleeve can be sleeved on the screw. Specifically, after the screw is limitedly placed in the limiting groove 9, the rotating platform 2 of this embodiment drives the screw fixture 3 to rotate so as to rotate the screw fixture 3 with the screw placed thereon to below the output end of the feeding track 4. After the sleeve is assembled (the sleeve is put on the screw), the rotating platform 2 of this embodiment drives the screw fixture 3 to rotate so as to move the next screw fixture 3 with the screw placed thereon to below the output end of the feeding track 4, thereby realizing the continuous automatic assembly of the sleeve. The feeding track 4 is mounted on the bracket 1 and tilted toward the screw fixture 3, so that the sleeve will move toward the screw fixture 3 along the extension direction of the feeding track 4 under the action of gravity. This embodiment can supply the sleeve to the feeding track 4 manually, and this embodiment can also supply the sleeve to the feeding track 4 automatically, for example, using a robot to place the sleeve in the sleeve storage assembly to the feeding track 4 or connect the input end of the feeding track 4 to the output end of the sleeve production assembly. This embodiment preferably supplies the sleeve to the feeding track 4 automatically. The sleeve release assembly 5 of this embodiment is installed on the feeding track 4, and the sleeve release assembly 5 can release the sleeves in the feeding track 4 one by one. Specifically, the screw clamp 3 of this embodiment is located below the output end of the feeding track 4, so the sleeve released by the sleeve release assembly 5 can be moved from the feeding track 4 to the corresponding screw clamp 3, and be sleeved on the screw rod under the guidance of the contraction groove 8.

[0047] The present application provides a sleeve assembly device, including a bracket 1, a rotating platform 2, a screw clamp 3, a feeding track 4 and a sleeve release component 5. Since the sleeve release component 5 can release the sleeves in the feeding track 4 one by one, the released sleeves are sleeved on the screws in the corresponding screw clamps 3 under the guidance of the contraction groove 8. Therefore, the present application can complete the assembly of the sleeve through the sleeve release component 5 and the screw clamp 3. Since the present application can drive the screw clamp 3 to rotate by the rotating platform 2 to move the screw that has not completed the sleeve assembly to the bottom of the output end of the feeding track 4 and move the next screw clamp 3 with the screw placed to the bottom of the output end of the feeding track 4, the present application can continuously and automatically assemble the sleeve, that is, the present application does not need to assemble the sleeve on the screw manually, thereby effectively solving the problems of high labor intensity and low sleeve assembly efficiency caused by the need to assemble the sleeve on the screw manually, thereby effectively improving the assembly efficiency of the expansion screws.

[0048] In some embodiments, the sleeve release assembly 5 includes a first limit assembly 51 and a second limit assembly 52, and the first limit assembly 51 and the second limit assembly 52 are both installed on the feeding track 4. The distance between the first limit assembly 51 and the output end of the feeding track 4 is smaller than the distance between the second limit assembly 51 and the output end of the feeding track 4. The distance between the first limit assembly 51 and the second limit assembly 52 is greater than the length of one sleeve and less than the length of two sleeves. The first limit assembly 51 is used to limit the placement position of the penultimate sleeve, and the second limit assembly 52 is used to tighten the penultimate sleeve. The first limiting component 51 of this embodiment is preferably a first pneumatic ejector, and the second limiting component 52 of this embodiment is preferably a second pneumatic ejector. The second limiting component 52 of this embodiment prevents other sleeves from continuing to move toward the output end of the feeding track 4 by tightening the second-to-last sleeve. Specifically, the working process of releasing the sleeve by the sleeve releasing component 5 of this embodiment can be: controlling the first pneumatic ejector to extend; controlling the second pneumatic ejector to perform retraction and extension operations in sequence, so that the first pneumatic ejector limits the placement position of the penultimate sleeve and the second pneumatic ejector tightens the second-to-last sleeve; after the screw clamp 3 moves to below the output end of the feeding track 4, controlling the first pneumatic ejector to retract to release the penultimate sleeve.

[0049] In some embodiments, there is a bent guide section at the end of the feed track 4. Since the feed track 4 of this embodiment has a bent guide section at the end, the bent guide section can reduce the angle between the sleeve and the screw when the sleeve slides out of the feed track 4, so that the sleeve can be smoothly sleeved on the screw. Therefore, this embodiment can effectively avoid the situation where the sleeve cannot be sleeved on the screw because the angle between the sleeve and the screw is too large when the sleeve slides out of the feed track 4.

[0050] In some embodiments, the inclination angle of the feed track 4 is 35°-55°. The inclination angle of this embodiment is the angle of inclination between the feed track 4 and the horizontal direction. This embodiment sets the inclination angle of the feed track 4 to 35°-55°, which can effectively avoid the situation where the sleeve moves too slowly in the feed track 4 due to the inclination angle of the feed track 4 being too small, resulting in a slow release speed and assembly speed of the sleeve, and the sleeve release assembly 5 releases multiple sleeves at one time due to the inclination angle of the feed track 4 being too large.

[0051] In some embodiments, the sleeve assembly device further includes an in-place detection component 6, which is mounted on the feed track 4. The in-place detection component 6 is used to detect whether there are sufficient sleeves in the feed track 4. The in-place detection component 6 of this embodiment is mounted on the feed track 4. The in-place detection component 6 of this embodiment can be a component such as a photoelectric switch or a photoelectric sensor that can detect whether there are sufficient sleeves in the feed track 4. Specifically, a detection slot is provided on the feed track 4. The in-place detection component 6 of this embodiment includes a light receiver and a light transmitter. The light transmitter and the light receiver are both arranged toward the detection slot. If the light receiver can receive the light emitted by the light transmitter, it means that there are insufficient sleeves in the feed track 4. At this time, it is necessary to continue to supply sleeves to the feed track 4. If the light receiver cannot receive the light emitted by the light transmitter, it means that there are sufficient sleeves in the feed track 4. At this time, it is necessary to stop supplying sleeves to the feed track 4.

[0052] In some embodiments, the sleeve assembly device further includes a sleeve supply assembly 7, and the output end of the sleeve supply assembly 7 is connected to the input end of the feed track 4. The sleeve supply assembly 7 of this embodiment is preferably a vibration plate. Since the output end of the sleeve supply assembly 7 is connected to the input end of the feed track 4, this embodiment can use the sleeve supply assembly 7 to automatically supply sleeves to the feed track 4, thereby effectively avoiding the problem of high labor intensity caused by the need to manually supply sleeves to the feed track 4.

[0053] In some embodiments, the cross-sectional shapes of the contraction groove 8 and the limiting groove 9 are both circular.

[0054] In some embodiments, the screw clamp 3 includes a pneumatic finger 31, a placement rack 32 and a positioning jig 33. The pneumatic finger 31 is fixed on the rotating platform 2. The positioning jig 33 has a shrinkage groove 8 and a limit groove 9 connected in sequence. The positioning jig 33 is fixed on the placement rack 32. The placement rack 32 has a card slot. The pneumatic finger 31 is detachably fixedly connected to the placement rack 32 by driving and pressing the card slot. Specifically, the pneumatic finger 31 of this embodiment has two finger ends, and the pneumatic finger 31 can drive the two finger ends to move toward or away from the center of the pneumatic finger 31. When the pneumatic finger 31 drives the two finger ends to move away from the center of the pneumatic finger 31, the finger ends of the pneumatic finger 31 press the slot, and the placement rack 32 and the positioning fixture 33 are both fixed on the pneumatic finger 31. When the pneumatic finger 31 drives the two finger ends to move toward the center of the pneumatic finger 31, the finger ends of the pneumatic finger 31 release the pressing slot, and the placement rack 32 and the positioning fixture 33 can both move relative to the pneumatic finger 31, that is, this embodiment can realize the rapid fixation or rapid disassembly of the placement rack 32 and the positioning fixture 33, thereby effectively improving the convenience of fixing and disassembly of the positioning fixture 33.

[0055] In some embodiments, the placement rack 32 includes two guard clips, which are respectively located on both sides of the positioning fixture 33, and the positioning fixture 33 is detachably mounted on the guard clips. Since the positioning fixture 33 is detachably mounted on the guard clip, the placement rack 32 can be replaced by removing the positioning fixture 33 from the guard clip and installing a new positioning fixture 33 on the guard clip in this embodiment, so that the screw fixture 3 can be applied to expansion screws of different sizes, thereby effectively improving the versatility of the sleeve assembly device.

[0056] As can be seen from the above, the present application provides a sleeve assembly device, including a bracket 1, a rotating platform 2, a screw clamp 3, a feed track 4 and a sleeve release component 5. Since the sleeve release component 5 can release the sleeves in the feed track 4 one by one, and the released sleeves are sleeved on the screw rod under the guidance of the contraction groove 8, the present application can complete the assembly of the sleeve through the sleeve release component 5 and the screw clamp 3. Since the present application can drive the screw clamp 3 to rotate by the rotating platform 2 to move the screw rod that has not completed the sleeve assembly to the bottom of the output end of the feed track 4 and moving the screw that has completed sleeve assembly to the next workstation, so the present application can complete the loading of the screw that has not completed sleeve assembly and the unloading of the screw that has completed sleeve assembly through the rotating platform 2, that is, the present application is equivalent to providing a device that can automatically assemble the sleeve and automatically load and unload, that is, the present application does not need to manually assemble the sleeve on the screw, thereby effectively solving the problems of high labor intensity and low sleeve assembly efficiency caused by the need to manually assemble the sleeve on the screw, thereby effectively improving the assembly efficiency of the expansion screws.

[0057] In a second aspect, the utility model provides an expansion screw assembly machine, which includes a sleeve assembly device provided in the first aspect.

[0058] An embodiment of the present application provides an expansion screw assembly machine, which includes a sleeve assembly device as provided in the first aspect above. The principle of the expansion screw assembly machine provided by the embodiment of the present application is the same as the principle of the sleeve assembly device provided in the first aspect above, and will not be discussed in detail here.

[0059] As can be seen from the above, the expansion screw assembly machine provided by the present application includes a sleeve assembly device, which includes a bracket 1, a rotating platform 2, a screw clamp 3, a feeding track 4 and a sleeve release component 5. Since the sleeve release component 5 can release the sleeves in the feeding track 4 one by one, the released sleeves are sleeved on the screw in the corresponding screw clamp 3 under the guiding action of the contraction groove 8. Therefore, the present application can complete the assembly of the sleeve through the sleeve release component 5 and the screw clamp 3. Since the present application can drive the screw clamp 3 to rotate by the rotating platform 2 to move the screw that has not completed the sleeve assembly to the bottom of the output end of the feeding track 4 and move the next screw clamp 3 with the screw placed to the bottom of the output end of the feeding track 4, the present application can continuously and automatically assemble the sleeve, that is, the present application does not need to assemble the sleeve on the screw manually, thereby effectively solving the problems of high labor intensity and low sleeve assembly efficiency caused by the need to assemble the sleeve on the screw manually, thereby effectively improving the assembly efficiency of the expansion screws.

[0060] The present invention also provides a kind of sleeve assembly device and expansion screw assembly machine, comprising a bracket 1, a rotating platform 2, a screw clamp 3, a feeding track 4 and a sleeve release component 5. Since the sleeve release component 5 can release the sleeves in the feeding track 4 one by one, the released sleeves are sleeved on the screw rod in the corresponding screw clamp 3 under the guiding action of the shrinkage groove 8. Therefore, the present invention can complete the assembly of the sleeve through the sleeve release component 5 and the screw clamp 3. Since the present invention can drive the screw clamp 3 to rotate by the rotating platform 2 to move the screw rod that has not completed the sleeve assembly to the bottom of the output end of the feeding track 4 and move the next screw clamp 3 with the screw rod placed thereon to the bottom of the output end of the feeding track 4, the present invention can realize continuous and automatic assembly of the sleeve, that is, the present invention does not need to assemble the sleeve on the screw rod manually, thereby effectively solving the problems of high labor intensity and low sleeve assembly efficiency caused by the need to assemble the sleeve on the screw rod manually, thereby effectively improving the assembly efficiency of the expansion screws.

[0061] In the description of this specification, the description with reference to the terms "one embodiment", "certain embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0062] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A sleeve assembly device, characterized in that: The sleeve assembly device comprises: Bracket; Rotating platform; A plurality of screw clamps are arranged in a circular array on the rotating platform, and have shrinkage grooves and limit grooves connected in sequence; A feeding track, mounted on the bracket and inclined toward the screw fixture, for conveying the sleeve; A sleeve release assembly, mounted on the feeding track, for releasing the sleeves in the feeding track one by one, so as to sleeve the sleeves on the screws in the corresponding screw fixtures; The rotating platform is used to drive the screw fixture to rotate; The shrinkage groove is located above the limiting groove, and the shrinkage groove shrinks toward the limiting groove; The limiting groove is used to limit the placement position of the screw.

2. The sleeve assembly device according to claim 1, characterized in that: The sleeve release assembly includes a first limit assembly and a second limit assembly, the first limit assembly and the second limit assembly are both installed on the feeding track, the distance between the first limit assembly and the output end of the feeding track is smaller than the distance between the second limit assembly and the output end of the feeding track, the distance between the first limit assembly and the second limit assembly is larger than the length of one sleeve and smaller than the length of two sleeves, the first limit assembly is used to limit the placement position of the first to last sleeve, and the second limit assembly is used to tighten the second to last sleeve.

3. The sleeve assembly device according to claim 1, characterized in that: The end of the feeding track is provided with a bending guide section.

4. The sleeve assembly device according to claim 1, characterized in that: The inclination angle of the feeding track is 35°-55°.

5. The sleeve assembly device according to claim 4, characterized in that: The sleeve assembly device also includes an in-place detection component, which is installed on the feeding track and is used to detect whether there are enough sleeves in the feeding track.

6. The sleeve assembly device according to claim 1, characterized in that: The sleeve assembly device also includes a sleeve supply assembly, and the output end of the sleeve supply assembly is connected to the input end of the feeding track.

7. The sleeve assembly device according to claim 1, characterized in that: The screw clamp includes a pneumatic finger, a placement frame and a positioning jig, the pneumatic finger is fixed on the rotating platform, the positioning jig has the shrinkage groove and the limit groove connected in sequence, the positioning jig is fixed on the placement frame, the placement frame has a card slot, and the pneumatic finger is detachably fixedly connected to the placement frame by driving and pressing the card slot.

8. The sleeve assembly device according to claim 7, characterized in that: The placement rack includes two protective clips, which are respectively located on two sides of the positioning fixture, and the positioning fixture is detachably mounted on the protective clips.

9. The sleeve assembly device according to claim 1, characterized in that: The cross-sectional shapes of the contraction groove and the limiting groove are both circular.

10. An expansion screw assembly machine, characterized in that: The expansion screw assembly machine comprises the sleeve assembly device according to any one of claims 1-9.

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