Knife pouch chain and chain type tool magazine

Abstract

The invention relates to the technical field of knife pouch chain structures, in particular to a knife pouch chain and a chain type tool magazine, which comprises a plurality of chain link units connected in series, and each chain link unit comprises a chain seat, a chain shaft, a side roller, a rear roller and a knife pouch; each chain base comprises a main body part, a connecting groove and a connecting protrusion, the connecting grooves and the connecting protrusions of every two adjacent chain bases are hinged through a chain shaft, and side idler wheels are arranged at the two ends of each chain shaft. The cutter sleeve is arranged on the outer side surface of the main body part through a bolt, and the inner side surface of the main body part and the cutter sleeve are coaxially provided with a rear roller; a locking and clamping assembly is arranged on the main body part and comprises a connecting shaft and a sleeve in threaded connection with the connecting shaft; and inclined step surfaces are arranged on the outer cylindrical surfaces, located on the first clamping jaw part and the second clamping jaw part, of the sleeve and abut against the step surfaces in the tool pouch. The knife pouch is installed on the chain base in a modularized mode, the whole chain does not need to be disassembled, only the knife pouch needs to be replaced, and the replacement convenience is improved.

Description

Technical Field

[0001] The invention relates to the technical field of tool sleeve chain structures, and in particular to a tool sleeve chain and a chain tool magazine. Background Art

[0002] Tool magazine is a tool storage and tool changing device required in the automated processing of CNC machine tools. Chain tool magazines are increasingly widely used in CNC machine tools due to their large tool storage capacity. Chain tool magazines can realize automatic tool exchange in conjunction with tool changing manipulators.

[0003] Most of the existing chain tool magazines adopt the structure of sleeve roller chain and hollow roller chain. A certain number of tools are fixed on the chain through additional parts on the chain surface or hollow rollers. The chain is wound around the driving sprocket and the driven sprocket, and the driving wheel is driven to rotate by the motor and the reducer, thereby realizing the rotation of the chain, moving the required tool to the tool changing position of the tool changing robot, and realizing automatic tool changing operation through the tool changing robot.

[0004] However, the sleeve roller chain or hollow roller chain used in the existing chain tool magazine has a complex structure. When the tool sleeve needs to be replaced due to wear, it is extremely inconvenient to disassemble, maintain or replace parts. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a tool sleeve chain and a chain tool magazine to effectively solve the problems in the background technology.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is: a knife sleeve chain, comprising: a plurality of chain link units connected in series, wherein the chain link units include a chain seat, a chain shaft, a side roller, a rear roller and a knife sleeve; The chain seat comprises a main body, and connecting grooves and connecting protrusions arranged at two ends of the main body, the connecting grooves and connecting protrusions at the head and tail of two adjacent chain seats are hinged through the chain shaft, and the side rollers are arranged at both ends of the chain shaft; The knife sleeve is arranged on the outer side of the main body part by means of bolts, and the inner side of the main body part is coaxially arranged with the rear roller of the knife sleeve; Wherein, a locking clamping assembly is provided on the main body along the axial direction of the knife sleeve, and the locking clamping assembly includes a connecting shaft for mounting the rear roller, and a sleeve screwed to an end of the connecting shaft away from the rear roller; The end of the sleeve extending into the knife sleeve is provided with a first claw portion and a second claw portion, the first claw portion and the second claw portion are symmetrically arranged relative to the knife locking mechanism of the knife sleeve, and an inclined step surface is provided on the outer cylindrical surface of the first claw portion and the second claw portion, the inclined step surface gradually converges inward along the axis of the knife sleeve in the direction away from the tool, and abuts against the step surface inside the knife sleeve.

[0007] Further, the connecting shaft comprises a threaded section connected to the sleeve, a first shaft section for mounting the rear roller, and a driving shaft section for driving the connecting shaft to rotate; The drive shaft section is located between the chain seat and the rear roller, and the drive shaft section includes a hexagonal boss, a first step shaft arranged on the side of the hexagonal boss facing the rear roller, and a second step shaft arranged on the side of the hexagonal boss facing the chain seat; The first step shaft abuts against the rear roller, and the second step shaft is embedded in the positioning hole of the chain seat.

[0008] Furthermore, the circumferential side wall of the positioning hole gradually converges inwards toward the tool sleeve, and the outer cylindrical surface of the second step shaft is tapered.

[0009] Furthermore, an inner groove is provided on the inner side surface of the chain seat facing the rear roller, and a plurality of limiting holes are provided in the inner groove along the circumferential direction of the hexagonal boss, and limiting pins are installed in the limiting holes, and the limiting pins abut against the circumferential side of the hexagonal boss.

[0010] Furthermore, the sleeve also includes a fixing seat; The first clamping claw portion and the second clamping claw portion are formed by extending along the end edge of the fixing seat; A guide groove is provided on the outer cylindrical surface of the fixed seat corresponding to the positions of the first claw part and the second claw part, an outer groove is provided on the outer side of the chain seat facing the tool sleeve, a guide block is provided on the inner wall of the outer groove, and the guide block is slidably arranged in the guide groove.

[0011] Furthermore, the threaded end of the connecting shaft is located in the outer groove.

[0012] Furthermore, two positioning pin holes are provided on the chain seat along the transmission direction of the knife sleeve chain, and cylindrical pins are provided in the positioning pin holes, and the ends of the cylindrical pins protruding from the chain seat are embedded in the calibration pin holes of the knife sleeve; And the sum of the depths of the positioning pin hole and the calibration pin hole is greater than the length of the cylindrical pin.

[0013] The present invention also provides a chain tool magazine, comprising the tool sleeve chain; and further comprising: Tool magazine body; and a driving wheel and a driven wheel arranged at both ends of the tool magazine body; and a driving motor for driving the driving wheel to rotate; Among them, both sides of the tool magazine body are provided with limit grooves, the rear roller is placed in the limit grooves and slides along the track of the limit grooves, and two limit plates are also provided on both sides of the tool magazine body, and the two limit plates are arranged corresponding to the two side rollers on the connecting shaft.

[0014] Furthermore, the edges of both end surfaces of the driving wheel extend radially outward to form a first supporting edge; The two first supporting edges are both provided with driving grooves for accommodating the side rollers along the circumferential direction, a first avoidance space is formed between the two first supporting edges, and the chain seat is placed in the first avoidance space; An annular avoidance groove is provided on the cylindrical surface located in the first avoidance space, and the rear roller is placed in the annular avoidance groove.

[0015] Further, the driven wheel includes a fixed surface connected to the tool magazine body, and a semicircular track surface for guiding the tool sleeve chain; Both end surfaces of the semicircular track surface are provided with fan-shaped arc surfaces, and a second avoidance space for accommodating the chain seat is formed between the fan-shaped arc surfaces.

[0016] The beneficial effects of the present invention are as follows: the present invention uses a chain shaft to connect the chain seats in sequence to form a continuous chain structure, and the tool sleeve is directly installed on the chain seat to form a modular structure. When it is necessary to adjust or replace different types of tool handles, there is no need to disassemble the entire chain, and only the tool sleeve needs to be replaced, which greatly simplifies the tool changing process and ensures that the tool magazine can continuously and efficiently perform tool changing actions. In order to further enhance the connection stability between the tool sleeve and the chain seat, the connecting shaft and the sleeve are provided to provide axial support force for the tool sleeve, which effectively resists the axial deviation or tilt problem that may be caused by the weight of the tool, thereby improving the reliability of tool changing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a structural schematic diagram and a partial enlarged diagram of a knife sleeve chain in an embodiment of the present invention; Figure 2It is a partial structural schematic diagram of a knife sleeve chain in an embodiment of the present invention; Figure 3 It is a schematic diagram of the structural decomposition of a link unit in an embodiment of the present invention; Figure 4 It is a structural schematic diagram of a chain seat in an embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of the connecting shaft in an embodiment of the present invention; Figure 6 A schematic diagram of the position of the limiting holes in an embodiment of the present invention; Figure 7 It is a schematic diagram of the structure of the sleeve in an embodiment of the present invention; Figure 8 It is a schematic diagram of the installation of the chain seat and the tool sleeve in an embodiment of the present invention; Fig. 9 This is a schematic diagram of a first state of a sleeve and a connecting shaft in an embodiment of the present invention; Fig.10 This is a schematic diagram of a second state of the sleeve and the connecting shaft in an embodiment of the present invention; Fig.11 It is a schematic diagram of the structure of a chain tool magazine in an embodiment of the present invention; Fig.12 for Fig.11 A local enlarged view of point A; Fig.13 This is a schematic diagram of the installation of the tool sleeve chain on the driving wheel in an embodiment of the present invention; Fig.14 Schematic diagram of the installation of the tool sleeve chain on the driven wheel in an embodiment of the present invention.

[0019] Figure numerals: 01, tool sleeve chain; 02, tool magazine body; 021, limit groove; 022, limit plate; 03, driving wheel; 031, driving groove; 032, first avoidance space; 033, annular avoidance groove; 04, driven wheel; 041, second avoidance space; 1, chain seat; 11, main body; 12, connecting groove; 13, connecting protrusion; 14, inner groove; 14a, positioning hole; 141, limit hole; 15, outer groove; 15a, guide block; 2, chain Shaft; 3, side roller; 4, rear roller; 5, tool sleeve; 6, locking clamping assembly; 61, connecting shaft; 611, threaded section; 612, first shaft section; 613, driving shaft section; 613a, hexagonal boss; 613b, first step shaft; 613c, second step shaft; 62, sleeve; 621, first clamping claw portion; 622, second clamping claw portion; 623, fixing seat; 623a, guide groove; 62a, inclined step surface; 7, positioning pin hole; 8, calibration pin hole. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0023] like Figures 1 to 4 The tool sleeve chain 01 shown comprises: a plurality of chain link units connected in series, the chain link units comprising a chain seat 1, a chain shaft 2, a side roller 3, a rear roller 4 and a tool sleeve 5; The chain seat 1 includes a main body 11, and connecting grooves 12 and connecting protrusions 13 arranged at both ends of the main body 11. The connecting grooves 12 and connecting protrusions 13 at the head and tail of two adjacent chain seats 1 are hinged through a chain shaft 2, and side rollers 3 are arranged at both ends of the chain shaft 2. The knife sleeve 5 is arranged on the outer side of the main body 11 by means of bolts, and the inner side of the main body 11 is provided with a rear roller 4 coaxially arranged with the knife sleeve 5; A locking clamping assembly 6 is provided on the main body 11 along the axial direction of the knife sleeve 5. The locking clamping assembly 6 includes a connecting shaft 61 for mounting the rear roller 4, and a sleeve 62 screwed to an end of the connecting shaft 61 away from the rear roller 4. One end of the sleeve 62 extending into the knife sleeve 5 is provided with a first claw portion 621 and a second claw portion 622. The first claw portion 621 and the second claw portion 622 are symmetrically arranged relative to the knife locking mechanism of the knife sleeve 5, and an inclined step surface 62a is provided on the outer cylindrical surface of the first claw portion 621 and the second claw portion 622. The inclined step surface 62a gradually gathers inward along the axis of the knife sleeve 5 in the direction away from the tool, and abuts against the step surface inside the knife sleeve 5.

[0024] In the preferred embodiment of the present invention, both ends of the tool sleeve 5 are open structures with a hollow interior. One end is fixed to the chain seat 1, and the other end is for the tool handle to be inserted. The inner hole diameter of the tool sleeve 5 at the tool handle end is larger than the inner hole diameter at the chain seat 1 end, so as to form a conical surface at the junction. During the assembly process of the chain link unit, the sleeve 62 is first inserted from the end of the tool sleeve 5 where the tool handle is installed, and the tool sleeve 5 is fixed in the area of ​​the main part 11 by bolts. Secondly, the threaded end of the connecting shaft 61 is passed through the main part 11, and the connecting shaft 61 is rotated to screw the connecting shaft 61 with the sleeve 62. During the rotation of the connecting shaft 61, the threaded connection is achieved by using the threaded structure. At the same time, the sleeve 62 produces axial movement in the direction away from the tool, and the first clamping claw is used to engage the first clamping claw. The inclined step surface 62a of the part 621 and the second claw part 622 clamps the inner conical surface of the tool sleeve 5, and finally the rear roller 4 is installed at the other end of the connecting shaft 61 to complete the assembly of a single chain link unit; and in the overall assembly process of the chain, multiple chain link units are connected end to end and connected through the chain shaft 2, and finally side rollers 3 are installed at both ends of the extended chain shaft 2 to complete the overall assembly of the tool sleeve chain 01; and when the tool sleeve 5 of a single chain link unit needs to be replaced or maintained, the knife locking mechanism in the tool sleeve 5 is first removed, and then the sleeve 62 is moved toward the tool by rotating the connecting shaft 61 until the two are completely separated, and at this time the tool sleeve 5 is smoothly removed from the chain seat 1, and the chain can maintain normal transmission without affecting the tool changing action.

[0025] The present invention uses a chain shaft 2 to sequentially connect each chain seat 1 to form a continuous chain structure, and the tool sleeve 5 is directly installed on the chain seat 1 to form a modular structure. When it is necessary to adjust or replace a different type of tool handle, there is no need to disassemble the entire chain, and only the tool sleeve 5 needs to be replaced, which greatly simplifies the tool changing process and ensures that the tool magazine can continuously and efficiently perform tool changing actions. Through the setting of the connecting shaft 61 and the sleeve 62, an axial support force is provided for the tool sleeve 5, further enhancing the connection stability between the tool sleeve 5 and the chain seat 1, effectively resisting the axial deviation or tilt problem that may be caused by the weight of the tool, and improving the reliability of tool changing.

[0026] like Figure 5 As shown, the connecting shaft 61 in the present invention includes a threaded section 611 connected to the sleeve 62, a first shaft section 612 for mounting the rear roller 4, and a driving shaft section 613 for driving the connecting shaft 61 to rotate; the driving shaft section 613 is located between the chain seat 1 and the rear roller 4, and the driving shaft section 613 includes a hexagonal boss 613a, and a first step shaft 613b arranged on the side of the hexagonal boss 613a facing the rear roller 4, and a second step shaft 613c arranged on the side of the hexagonal boss 613a facing the chain seat 1; the first step shaft 613b abuts against the rear roller 4, and the second step shaft 613c is embedded in the positioning hole 14a of the chain seat 1.

[0027] Specifically, when the sleeve 62 is installed into the tool sleeve 5, the end face of the sleeve 62 is flush with the outer side face of the chain seat 1, and the connecting shaft 61 is inserted into the tool sleeve 5 through the chain seat 1. At this time, the second step shaft 613c is embedded in the positioning hole 14a, and the hexagonal boss 613a is manually rotated with a wrench to rotate the connecting shaft 61. The rotating connecting shaft 61 is located in the threaded section 611 and cooperates with the internal threaded hole of the sleeve 62. As the sleeve is screwed in deeper, the sleeve 62 moves toward the chain seat 1, and the tool sleeve 5 is clamped on the chain seat 1 using the first claw portion 621 and the second claw portion 622.

[0028] As a preferred structure of the above scheme, the circumferential side wall of the positioning hole 14a gradually converges inward toward the tool sleeve 5, and the outer cylindrical surface of the second step shaft 613c is set in a taper to ensure the centering accuracy of the connecting shaft 61 during rotation.

[0029] In the present invention, the connecting shaft 61 is threadedly connected with the sleeve 62 to enable the sleeve 62 to move along its axis. However, the rear roller 4 rotates during the operation of the chain, and the rotation of the rear roller 4 causes a circumferential torque on the connecting shaft 61, which may easily cause the sleeve 62 to move in the opposite direction, thereby affecting the clamping force of the sleeve 62 on the tool sleeve 5. Therefore, if Figure 6 As shown, an inner groove 14 is provided on the inner side surface of the chain seat 1 facing the rear roller 4, and a plurality of limiting holes 141 are provided in the inner groove 14 along the circumferential direction of the hexagonal boss 613a. Limiting pins are installed in the limiting holes 141, and the limiting pins abut against the circumferential side of the hexagonal boss 613a.

[0030] Specifically, a plurality of limit holes 141 are evenly distributed along the circumferential direction, and after the connecting shaft 61 is rotated into position, limit pins are installed in at least two of the limit holes 141, and the limit pins are diagonally arranged to limit the erroneous rotation of the connecting shaft 61 and ensure the reliability of the clamping of the tool sleeve 5.

[0031] like Figure 7 As shown, the sleeve 62 in the present invention also includes a fixed seat 623; a first claw portion 621 and a second claw portion 622 are extended along the end edge of the fixed seat 623; a guide groove 623a is provided on the outer cylindrical surface of the fixed seat 623 at positions corresponding to the first claw portion 621 and the second claw portion 622, an outer groove 15 is provided on the outer side surface of the chain seat 1 facing the tool sleeve 5, a guide block 15a is provided on the inner wall of the outer groove 15, and the guide block 15a is slidably set in the guide groove 623a.

[0032] By setting a guide groove 623a on the outer cylindrical surface of the fixed seat 623 and slidingly cooperating with the guide block 15a on the inner wall of the outer groove 15 of the chain seat 1, the claw part is effectively prevented from deflecting or shaking when subjected to force, ensuring the stability and accuracy of the first claw part 621 and the second claw part 622 during action.

[0033] Based on the above embodiments, preferably, Figure 9-10 As shown, the threaded end of the connecting shaft 61 is located in the outer groove 15. The guide block 15a slides along the guide groove 623a for a distance, ensuring that the connecting shaft 61 can accurately move along a predetermined trajectory until it completely coincides with the central axis of the sleeve 62, so that the threaded end can easily and accurately enter the internal threaded hole of the sleeve 62 without the need for tedious debugging and correction work, which not only improves the threading efficiency but also ensures the threading quality.

[0034] In a preferred embodiment of the present invention, Figure 8 As shown, two positioning pin holes 7 are provided on the chain seat 1 along the transmission direction of the tool sleeve chain 01, and a cylindrical pin is provided in the positioning pin hole 7. The end of the cylindrical pin protruding from the chain seat 1 is embedded in the calibration pin hole 8 of the tool sleeve 5; and the sum of the depths of the positioning pin hole 7 and the calibration pin hole 8 is greater than the length of the cylindrical pin.

[0035] During the transmission process, the embedding of the cylindrical pin can effectively prevent the relative offset between the chain seat 1 and the knife sleeve 5, which helps to reduce the wear of the knife sleeve 5 caused by misalignment; and the sum of the depths of the positioning pin hole 7 and the calibration pin hole 8 is greater than the length of the cylindrical pin. This design allows the cylindrical pin to have a certain elastic space when embedding the calibration pin hole 8. This elastic space can adapt to slight deformation and displacement under different working conditions, ensuring a stable connection between the chain seat 1 and the knife sleeve 5.

[0036] like Figures 11 to 14 As shown, the present invention also provides a chain tool magazine, including a tool sleeve chain 01 and a tool magazine body 02; And a driving wheel 03 and a driven wheel 04 arranged at both ends of the tool magazine body 02; And a driving motor for driving the driving wheel 03 to rotate; Among them, there are limit grooves 021 on both sides of the tool magazine body 02, the rear roller 4 is placed in the limit groove 021, and slides along the track of the limit groove 021, and two limit plates 022 are also provided on both sides of the tool magazine body 02, and the two limit plates 022 are arranged corresponding to the two side rollers 3 on the connecting shaft 61.

[0037] The guide grooves 623a on both sides of the tool magazine body 02 provide precise trajectories for the sliding of the rear roller 4. The rear roller 4 slides in the guide grooves 623a, which can ensure that the tool sleeve chain 01 maintains a stable motion trajectory during the transmission process, and the side rollers 3 on the connecting shaft 61 cooperate with the limit plate 022 to form an effective limit mechanism, so that the tool sleeve chain 01 can maintain a stable posture during the transmission process to avoid failure or damage caused by lateral displacement.

[0038] On the basis of the above-mentioned embodiment, the edges of the two end surfaces of the driving wheel 03 extend radially outward to form a first supporting edge; the structural strength of the driving wheel 03 is enhanced, and the necessary supporting surface is provided for accommodating the side roller 3, and driving grooves 031 for accommodating the side roller 3 are provided in the circumferential direction on the two first supporting edges. When the driving wheel 03 rotates, the side roller 3 enters the driving groove 031 and follows the driving groove 031 to make a circular motion around the axis of the driving shaft to realize the transmission of the chain, and a first avoidance space 032 is formed between the two first supporting edges, and the chain seat 1 is placed in the first avoidance space 032; the position of the chain seat 1 on the driving wheel 03 is precisely defined, thereby ensuring the accuracy and stability of the tool during storage and replacement, and an annular avoidance groove 033 is provided on the cylindrical surface located in the first avoidance space 032, and the rear roller 4 is placed in the annular avoidance groove 033, so that the rear roller 4 can roll smoothly on the driving wheel 03, effectively avoiding the lateral deviation of the tool holder chain 01.

[0039] Based on the above embodiment, the driven wheel 04 includes a fixed surface connected to the tool magazine body 02, and a semicircular track surface for guiding the tool sleeve chain 01; the two end surfaces of the semicircular track surface are provided with fan-shaped arc surfaces, and a second avoidance space 041 for accommodating the chain seat 1 is formed between the fan-shaped arc surfaces.

[0040] The driven wheel 04 has a fixed surface connected to the tool magazine body 02, ensuring that the driven wheel 04 can be firmly installed at the specified position of the tool magazine body 02, thereby withstanding various forces and torques during the transmission process, and the design of the semicircular track surface enables the tool sleeve chain 01 to be smoothly transmitted along the predetermined track, ensuring the accuracy and stability of the tool during storage and replacement. In addition, the fan-shaped arc surface not only plays a role in smooth transition, but also forms a second avoidance space 041 for accommodating the chain seat 1, so that the position of the chain seat 1 on the driven wheel 04 is accurately defined, further improving the stability and accuracy of the transmission.

[0041] Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A knife sheath chain, characterized in that: include: A plurality of chain link units connected in series, wherein the chain link units include a chain seat, a chain shaft, a side roller, a rear roller and a knife sleeve; The chain seat comprises a main body, and connecting grooves and connecting protrusions arranged at two ends of the main body, the connecting grooves and connecting protrusions at the head and tail of two adjacent chain seats are hinged through the chain shaft, and the side rollers are arranged at both ends of the chain shaft; The knife sleeve is arranged on the outer side of the main body part by means of bolts, and the inner side of the main body part is coaxially arranged with the rear roller of the knife sleeve; Wherein, a locking clamping assembly is provided on the main body along the axial direction of the knife sleeve, and the locking clamping assembly includes a connecting shaft for mounting the rear roller, and a sleeve screwed to an end of the connecting shaft away from the rear roller; The end of the sleeve extending into the knife sleeve is provided with a first claw portion and a second claw portion, the first claw portion and the second claw portion are symmetrically arranged relative to the knife locking mechanism of the knife sleeve, and an inclined step surface is provided on the outer cylindrical surface of the first claw portion and the second claw portion, the inclined step surface gradually converges inward along the axis of the knife sleeve in the direction away from the tool, and abuts against the step surface inside the knife sleeve.

2. The knife sheath chain according to claim 1, characterized in that: The connecting shaft comprises a threaded section connected to the sleeve, a first shaft section for mounting the rear roller, and a driving shaft section for driving the connecting shaft to rotate; The drive shaft section is located between the chain seat and the rear roller, and the drive shaft section includes a hexagonal boss, a first step shaft arranged on the side of the hexagonal boss facing the rear roller, and a second step shaft arranged on the side of the hexagonal boss facing the chain seat; The first step shaft abuts against the rear roller, and the second step shaft is embedded in the positioning hole of the chain seat.

3. The knife sheath chain according to claim 2, characterized in that: The circumferential side wall of the positioning hole gradually converges inwards toward the tool sleeve, and the outer cylindrical surface of the second step shaft is tapered.

4. The knife sheath chain according to claim 2, characterized in that: An inner groove is provided on the inner side surface of the chain seat facing the rear roller, and a plurality of limiting holes are provided in the inner groove along the circumferential direction of the hexagonal boss. Limiting pins are installed in the limiting holes, and the limiting pins abut against the circumferential side of the hexagonal boss.

5. The knife sheath chain according to claim 1, characterized in that: The sleeve also includes a fixing seat; The first claw portion and the second claw portion are extended along the end edge of the fixing seat; A guide groove is provided on the outer cylindrical surface of the fixed seat corresponding to the positions of the first claw part and the second claw part, an outer groove is provided on the outer side of the chain seat facing the tool sleeve, a guide block is provided on the inner wall of the outer groove, and the guide block is slidably arranged in the guide groove.

6. The knife sheath chain according to claim 5, characterized in that: The threaded end of the connecting shaft is located in the outer groove.

7. The knife sheath chain according to claim 1, characterized in that: Two positioning pin holes are provided on the chain seat along the transmission direction of the tool sleeve chain, and cylindrical pins are provided in the positioning pin holes, and the ends of the cylindrical pins protruding from the chain seat are embedded in the calibration pin holes of the tool sleeve; And the sum of the depths of the positioning pin hole and the calibration pin hole is greater than the length of the cylindrical pin.

8. A chain tool magazine, comprising the tool sleeve chain according to any one of claims 1 to 7; characterized in that: Also includes: Tool magazine body; and a driving wheel and a driven wheel arranged at both ends of the tool magazine body; and a driving motor for driving the driving wheel to rotate; Among them, both sides of the tool magazine body are provided with limit grooves, the rear roller is placed in the limit grooves and slides along the track of the limit grooves, and two limit plates are also provided on both sides of the tool magazine body, and the two limit plates are arranged corresponding to the two side rollers on the connecting shaft.

9. The chain tool magazine according to claim 8, characterized in that: The edges of both end surfaces of the driving wheel extend radially outward to form a first supporting edge; The two first supporting edges are both provided with driving grooves for accommodating the side rollers along the circumferential direction, a first avoidance space is formed between the two first supporting edges, and the chain seat is placed in the first avoidance space; An annular avoidance groove is provided on the cylindrical surface located in the first avoidance space, and the rear roller is placed in the annular avoidance groove.

10. The chain tool magazine according to claim 8, characterized in that: The driven wheel includes a fixed surface connected to the tool magazine body and a semicircular track surface for guiding the tool sleeve chain; Both end surfaces of the semicircular track surface are provided with fan-shaped arc surfaces, and a second avoidance space for accommodating the chain seat is formed between the fan-shaped arc surfaces.

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