Chain tool magazine

Abstract

A chain-type tool magazine includes a track and a plurality of carriers connected in series to form a chain that can move along the track, and each carrier is combined with a tool sleeve, wherein the tool sleeve is inseparably combined with the corresponding carrier through a locking unit, and the locking state of the locking unit is released through an unlocking unit, so that the tool sleeve can be separated from the carrier in time, thereby realizing stable transmission of the tool sleeve, and the tool sleeve is firmly combined with the carrier without any doubt of arbitrary loosening.

Description

Technical Field

[0001] The present invention relates to a machining center, and in particular to a chain-type tool magazine equipped with a plurality of tools. Background Art

[0002] The chain-type tool magazine of a known machining center can carry a large number of tools, and through the intermediate arrangement of a tool changing mechanism, the tools required for machining can be delivered to the spindle of the machining center in a timely manner. The aforementioned chain-type tool magazine includes a plurality of tool holders that are connected in series and can move along the running track, the tool holder is for the tool sleeve to be combined, the tool sleeve is for the tool rod to be inserted therein, and the tool rod is combined with the tool; and each tool holder is provided with a tool outlet notch so that the tool sleeve can smoothly enter and exit the tool holder during the tool removal operation, such as the invention patent of Taiwan Patent Publication No. I328490 "Clamping Structure for Tool Sleeve Moving Out and Tool Changing (I)" is an example.

[0003] Since the chain-type tool magazine is arranged in an upright position, in order to prevent the tool sleeve from accidentally falling off the tool holder due to its own weight during operation, most of the known chain-type tool magazines including the above-mentioned patent technology are equipped with supporting plates on both sides of the periphery of the running track to frame all the tool holders and tool sleeves and prevent the tool sleeve from falling. However, the setting of the aforementioned supporting plates not only increases the volume of the chain-type tool magazine, but also makes maintenance inconvenient. Moreover, the supporting plates must have a notch at the corresponding tool removal position so as not to hinder the tool changing operation. However, the aforementioned notch still makes it doubtful that the tool sleeve during operation will fall from that place. For this reason, some manufacturers will add a spring clamping plate in each tool holder of the chain-type tool magazine, and use the spring clamping plate to clamp the tool holder to improve the stability of the tool holder in the tool holder. However, this method has the potential for the spring clamping plate to loosen due to elastic fatigue, which may cause the tool holder to be unable to be firmly clamped, especially when the total weight of the tool holder, the tool rod and the tool inserted in the tool holder is heavier, the tendency of loosening is more significant. Summary of the invention

[0004] In view of this, an object of the present invention is to provide a chain-type tool magazine, which has a good carrying effect on the tool sleeve and can avoid the problem caused by improper loosening of the tool sleeve.

[0005] In order to achieve the above-mentioned purpose, the present invention provides a chain-type tool magazine including a track and a plurality of carriers connected in series to form a chain that can move along the track, each carrier being combined with a tool sleeve that can be separated therefrom; each carrier including a base and at least one support member, wherein the bases of adjacent carriers are pivotally connected to each other, and each base can move along the track, and each support member is connected to the corresponding base; each tool sleeve is respectively matched with the support member of a corresponding carrier in a sliding manner; a locking unit is arranged between each carrier and the corresponding tool sleeve, and the locking unit can be manipulated between a locked state and an unlocked state, wherein when the locking unit is in the locked state, the tool sleeve is inseparably combined with the corresponding carrier, and when the locking unit is in the unlocked state, the tool sleeve can be separated relative to the carrier.

[0006] The invention has the effect that the knife sleeve can be stably conveyed without providing a supporting plate, and the knife sleeve will not be loosened at will. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 and Figure 2 They are three-dimensional diagrams of a chain-type tool magazine according to a preferred embodiment of the present invention;

[0008] Figure 3 for Figure 1 A rear view of the chain tool magazine reveals that the displacement member of the tool transport mechanism of the chain tool magazine is located in the first position;

[0009] Figure 4 for Figure 1 A top view of

[0010] Figure 5 A three-dimensional diagram of some components of the chain-type tool magazine of the above preferred embodiment of the present invention;

[0011] Figure 6 for Figure 5 A top view of

[0012] Figure 7 for Figure 6 A cross-sectional view in the direction of 7-7;

[0013] Figure 8 for Figure 6 The cross-sectional view in the direction of 8-8 reveals that the locking unit of the chain-type tool magazine is in a locked state;

[0014] Fig. 9 for Figure 8 A partial enlarged view of the area marked A;

[0015] Fig.10 and Fig.11 A three-dimensional diagram of some components of the chain-type tool magazine of the above preferred embodiment of the present invention;

[0016] Fig.12 Similar Figure 8 , revealing that the unlocking unit of the chain-type tool magazine is used to release the locking state of the locking unit;

[0017] Fig.13 for Fig.12 A partial enlarged view of the area marked with B;

[0018] Fig.14 A three-dimensional diagram of the tool transport mechanism of the chain-type tool magazine of the above preferred embodiment of the present invention;

[0019] Fig.15 for Fig.14 A top view of

[0020] Fig.16 for Fig.14 Side view of

[0021] Fig.17 It is a side view of the chain-type tool magazine of the preferred embodiment of the present invention, revealing that the displacement member of the tool transport mechanism of the chain-type tool magazine is located at the second position;

[0022] Fig.18 for Fig.17 A top view of

[0023] Fig.19 for Fig.17 Another side view of .

[0024]

Explanation of symbols

[0025] [The present invention]

[0026] 100: Chain tool magazine

[0027] 101: Track

[0028] 101a: Groove

[0029] 10: Carrier

[0030] 12: Base

[0031] 12a: first side hole

[0032] 12b: Second side hole

[0033] 12c: Card slot

[0034] 14: Support

[0035] 16: Roller

[0036] 20: Knife sheath

[0037] 22: socket hole

[0038] 24:Piercing

[0039] 26: Connecting hole

[0040] 30: Tool bar

[0041] 40: Locking unit

[0042] 41:Fixed rod

[0043] 41a:Shaft

[0044] 41b: Head

[0045] 41c: stopper

[0046] 42: Brake lever

[0047] 42a: Large diameter section

[0048] 42b: Trail section

[0049] 42c: Block wall

[0050] 42d: Shoulder

[0051] 42e: Countersunk hole

[0052] 43: Push piece

[0053] 44: Restricted

[0054] 45: Wear-resistant ring

[0055] 50: Unlock unit

[0056] 52: Pressure cylinder

[0057] 52a: Piston rod

[0058] 54: Top piece

[0059] 54a: Touch pressure end

[0060] 60: Knife transport mechanism

[0061] 61: Saddle

[0062] 61a: Long opening

[0063] 62: Knife sleeve stopper

[0064] 62a: First side block

[0065] 62b: Second side block

[0066] 62c: arc-shaped abutment surface

[0067] 63: Guide

[0068] 64: Actuating cylinder

[0069] 64a: cylinder

[0070] 64b: Displacement piece

[0071] 64c: Floating joint

[0072] 65: Clamping unit

[0073] 651: First clamping block

[0074] 651a: first jaw surface

[0075] 652: Second clamping block

[0076] 652a: second clamping surface

[0077] 653:Fixed rod

[0078] 653a: Free end

[0079] 654: Spring

[0080] 655: Stopper

[0081] 66: Guide rod

[0082] 67: First fixed block

[0083] 68: Second fixed block

[0084] 69: First stop

[0085] 70: Second stopper

[0086] PA: Lock position

[0087] PB: Unlock position

[0088] P1: First position

[0089] P2: Second position DETAILED DESCRIPTION

[0090] In order to more clearly illustrate the present invention, a preferred embodiment is given and described in detail with reference to the accompanying drawings. Figures 1 to 9 As shown, the chain-type tool magazine 100 of the preferred embodiment of the present invention is applied to a horizontal machining center as an example, but is not limited thereto. The chain-type tool magazine 100 includes a track 101 and a plurality of carriers 10 pivotally connected to each other to form a chain that can move along the track 101. Each carrier 10 is combined with a tool sleeve 20 that can be separated from it. The tool sleeve 20 has a sleeve hole 22 for inserting a tool rod 30 therein, and the tool sleeve 20 is locked by a locking unit 40 ( Fig.10 and Fig.11Reference) and is firmly attached to the carrier 10 before unlocking. In addition, the chain-type tool magazine 100 is provided with an unlocking unit 50 and a tool transporting mechanism 60 on one side of the track 101 and corresponding to a tool taking position on the track 101. For the convenience of description, Figure 1 The position of the tool sleeve 20 in the center shown is defined as the tool removal position. The unlocking unit 50 is used to release the locking relationship of the locking unit 40 between the carrier 10 and the tool sleeve 20 located at the tool removal position, so that the tool sleeve 20 can be separated relative to the carrier 10; the tool transport mechanism 60 is used to deliver the unlocked tool sleeve 20 to a tool changing mechanism (not shown).

[0091] The following first introduces the specific combination relationship between the carrier 10 and the knife sleeve 20, then explains the locking and unlocking methods therebetween, and finally describes the knife transport mechanism 60.

[0092] Please cooperate Fig.10 and Fig.11 As shown, the carrier 10 includes a base 12 and two support members 14. The base 12 can smoothly move along the track 101 by having a plurality of rollers 16 on the side thereof located in the groove 101a of the track 101; the two support members 14 are round rods and one end of which is detachably fixed to the base 12, and the two support members 14 are suspended in parallel. The knife sleeve 20 has two through holes 24, which are respectively located on both sides of the sleeve hole 22 and are inserted into the corresponding support members 14, so that the knife sleeve 20 can smoothly slide along the support members 14 without turning over. The aforementioned knife sleeve 20 is achieved by two circular through-holes 24 and two round rod-shaped support members 14 to achieve the purpose of sliding and not turning over. However, in other embodiments, the support members can be polygonal rods, and the through-holes are polygonal holes. In this way, only one support member and one through-hole are needed to achieve the purpose of sliding and not turning over the knife sleeve. However, if the structural strength is considered, two support members and two through-holes are still used. In addition, the base 12 of the aforementioned carrier 10 has a first side hole 12a and a second side hole 12b that do not penetrate the base 12 and are orthogonal to each other; the knife sleeve 20 has a connecting hole 26.

[0093] The locking unit 40 includes a fixing rod 41, a brake rod 42, a push member 43, a limiting member 44 and a wear ring 45. The fixing rod 41 includes a rod body 41a and a head 41b connected to one end of the rod body 41a. The other end of the rod body 41a is inserted into the connecting hole 26. The head 41b is exposed outside the knife sleeve 20. The connection between the head 41b and the rod body 41a forms a stopper 41c. The rod body 41a of the fixing rod 41 can be provided with a thread, and the connecting hole 26 is a screw hole, so as to realize the connection with the knife sleeve in a detachable manner. Of course, the fixing rod can also be formed as a whole with the knife sleeve.

[0094] The brake rod 42, the push member 43, the limit member 44 and the wear ring 45 are accommodated in the second side hole 12b of the base 12. Fig. 9 The locking position PA shown is Fig.13 The brake lever 42 is movable between the unlocking position PB shown in the figure, and includes a large diameter section 42a, a small diameter section 42b and a stop wall 42c. The small diameter section 42b is located between the large diameter section 42a and the stop wall 42c. The diameter of the large diameter section 42a is larger than the diameter of the small diameter section 42b, and the connection between the large diameter section 42a and the small diameter section 42b forms a shoulder 42d. The push member 43 provides a push force to act on the brake lever 42 so that the brake lever 42 maintains moving toward the locking position PA. The push member 43 in this embodiment is a spring, one end of the spring abuts against the bottom surface of the second side hole 12b, and the other end abuts against the brake lever 42. Preferably, the brake lever 42 has a countersunk hole 42e for a part of the spring to extend into so that the spring will not deviate. The limiting member 44 is a C-shaped buckle and is inserted into the slot 12c near the opening of the second side hole 12b. Herein, when the retaining wall 42c of the brake rod 42 abuts against the limiting member 44, it is in the locking position PA. The wear-resistant ring 45 is made of wear-resistant material and is sleeved between the outer peripheral surface of the large diameter section 42a of the brake rod 42 and the hole wall of the second side hole 12b, so as to prevent the brake rod 42 from directly contacting the hole wall of the second side hole 12b and causing wear.

[0095] Please cooperate Figure 5 and Figure 8 As shown, the unlocking unit 50 includes a pressure cylinder 52 and a top piece 54. The pressure cylinder 52 is fixed to one side of the track 101 and does not hinder the movement of the chain. The pressure cylinder 52 has a piston rod 52a that can move forward and backward due to the change in the pressure inside the pressure cylinder. One end of the piston rod 52a is connected to the top piece 54. The top piece 54 has a contact end 54a that is aligned with the brake rod 42 of the locking unit 40 at the knife removal position. When the pressure cylinder 52 is not actuated, the contact end 54a of the top piece 54 and the end of the brake rod 42 exposed to the outside are spaced apart.

[0096] The above is the description of the combination relationship between the carrier 10 and the knife sleeve 20, the locking unit 40 and the unlocking unit 50. When the knife sleeve 20 is combined with the carrier 10, the end of the fixing rod 41 on the knife sleeve 20 having the head 41b is inserted into the first side hole 12a of the base 12 of the corresponding carrier 10 ( Figure 7 At the same time, the brake rod 42 is pushed by the push member 43 and stopped by the limit member 44 and stops at the locking position PA. In the above state, the shoulder portion 42d of the brake rod 42 is located exactly in the path where the fixing rod 41 is pulled out ( Fig. 9) and abuts against the stopper 41c of the fixing rod 41, so that the fixing rod 41 cannot be withdrawn from the first side hole 12a. In this way, the knife sheath 20 integrally connected with the fixing rod 41 can be firmly combined with the carrier 10 and change its position as the chain rotates. When the locking state of the locking unit 40 is to be released, the pressure cylinder 52 is activated to control the piston rod 52a to be pushed outward. Fig.12 and Fig.13 As shown, the push piece 54 driven by the piston rod 52a will use its contact pressure end 54a to push the brake rod 42 inward to the unlocking position PB, causing the shoulder portion 42d of the brake rod 42 to withdraw from the path of the fixed rod 41 being pulled out (that is, the shoulder portion 42d no longer abuts against the stop portion 41c). At the same time, the brake rod 42 squeezes the push piece 43, thereby separating the knife sleeve 20 from the carrier body 10. The head portion 41b of the fixed rod 41 can pass through the outside of the small diameter section 42b of the brake rod 42 without hindrance and disengage from the first side hole 12a, so that the knife sleeve 20 can be separated relative to the carrier body 10 along the support member 14.

[0097] The following further describes the knife-carrying mechanism 60 of this embodiment. Figures 1 to 4 and Figures 14 to 16 As shown, the knife transport mechanism 60 includes a saddle 61, a knife sleeve stopper 62, two guide members 63, an actuating cylinder 64, a clamping unit 65 and two guide rods 66. The saddle 61 is in the shape of an elongated plate and is transversely fixed to one side of the track 101 where the chain does not move. The saddle 61 has an elongated opening 61a, and the unlocking unit 50 is fixed to the saddle 61. The knife sleeve stopper 62 is composed of a first side block 62a and a second side block 62b. The first side block 62a is fixed to one end of the saddle 61, and the second side block 62b has an arc-shaped abutting surface 62c. The two guide members 63 are round rods with the same diameter as the support member 14, and one end is fixedly connected to the first side block 62a in a detachable manner and suspended in parallel. Each guide member 63 is located on the same axis as the corresponding support member 14. It is worth mentioning that there is a gap between the free ends of the guide member 63 and the support member 14, and the gap ensures that the knife sleeve 20 driven by the running chain will not collide with the guide member 63. The actuating cylinder 64 includes a cylinder body 64a and a displacement member 64b. The cylinder body 64a is arranged on the back of the saddle 61. The displacement member 64b is a piston rod with one end passing through the cylinder body 64a and the other end exposed outside the cylinder body 64a and connected to a floating joint 64c. By controlling the change of the internal pressure of the cylinder body 64a, the displacement member 64b can be driven to move. Figure 3 The first position P1 shown retracted relative to the cylinder 64a, and Fig.17 A linear reciprocating movement occurs between the second position P2 shown relative to the cylinder 64a.

[0098] The number of the guide members 63 is two, and the purpose is also to enable the knife sleeve 20 to slide on the guide members 63 without flipping. However, when the support member is a single polygonal rod, and the through hole of the knife sleeve is a polygonal hole, the guide member is also a single polygonal rod, which can also achieve the purpose of sliding fit and preventing the knife sleeve from flipping.

[0099] In addition, a first fixing block 67 and a second fixing block 68 are fixedly provided on the back of the saddle 61, and at least one first stopper 69 is provided on the first fixing block 67, and at least one second stopper 70 is provided on the second fixing block 68. In the present embodiment, the first stopper 69 is a bolt and there are two of them. The first stopper 69 is locked into the screw hole of the first fixing block 67, and the second stopper 70 is also a bolt and is locked into the screw hole of the second fixing block 68. The aforementioned first stopper 69 and the second stopper 70 can be adjusted to the depth of being locked into the screw hole to change the position of the exposed head of the bolt.

[0100] The actuating cylinder 64 is connected to the clamping unit 65 via a floating joint 64c and can drive the clamping unit 65 to move synchronously. The clamping unit 65 includes a first clamping block 651 , a second clamping block 652 , two fixing rods 653 and two springs 654 . In order to enable the first clamp block 651 and the second clamp block 652 to move stably, in this embodiment, the two guide rods 66 are parallel to the axes of the support member 14 and the guide member 63, so that the two guide rods 66 pass through the first clamp block 651 and the second clamp block 652, and the two ends of the guide rod 66 are respectively fixed to the first fixed block 67 and the second fixed block 68, so that the first clamp block 651 and the second clamp block 652 can slide along the guide rod 66 without flipping, and part of the first clamp block 651 and the second clamp block 652 pass through the elongated opening 61a of the saddle 61. Herein, it is defined that the first clamp block 651 and the second clamp block 652 pass through the elongated opening 61a and the facing surfaces are respectively the first clamp surface 651a and the second clamp surface 652a.

[0101] The two fixing rods 653 of the clamping unit 65 are parallel to the guide rod 66, one end of which is fixedly connected to the first clamping block 651, and the other end passes through the second clamping block 652 and is connected to a stopper 655 formed by a nut, so that the second clamping block 652 can move along the fixing rod 653. The two springs 654 are respectively sleeved on the corresponding fixing rods 653, and the two ends are respectively abutted against the stopper 655 and the second clamping block 652. Since the stopper 655 is fixedly installed on the fixing rod 653, and the fixing rod 653 is fixedly connected to the first clamping block 651, the spring 654 uses the stopper 655 as a fixed support point to keep pushing the second clamping block 652 to move toward the first clamping block 651.

[0102] The number of the guide rods 66 is two, so as to prevent the first clamping block 651 and the second clamping block 652 from turning over; the number of the fixing rods 653 and the spring 654 is two, so as to improve the stability between the first clamping block 651 and the second clamping block 652. However, under the premise of not affecting their given functions, the number of the guide rods 66, the fixing rods 653 and the spring 654 is not limited to the above. For example, when the radial cross-section of the guide rod and the fixing rod is non-circular, in practice, the number of the guide rods and the fixing rods can be one to achieve their functions.

[0103] The above is a structural description of the chain-type tool magazine 100 according to a preferred embodiment of the present invention, and its operation is described below.

[0104] Please cooperate Figure 8 and Fig. 9 As shown, the carrier 10 and the knife sleeve 20 are kept in an inseparable state through the locking unit 40 under normal conditions, and thanks to the locking relationship of the locking unit 40, the knife sleeve 20 rotating with the chain will not be loosened as in the existing structure. At the same time, the top member 54 of the unlocking unit 50 is spaced from the brake rod 42 on the carrier 10, and the displacement member 64b of the actuating cylinder 64 of the knife moving mechanism 60 stays at the first position P1. In this state, the space between the first clamping surface 651a of the first clamping block 651 and the second clamping surface 652a of the second clamping block 652 is just enough for the knife sleeve 20 on the chain to pass through ( Figure 4 Refer to), ensure that the chain runs smoothly and the spring 654 is in a compressed state.

[0105] When the machining center is about to perform a tool change procedure, the unlocking unit 50 is controlled to drive the push member 54 to push the brake rod 42 of the locking unit 40 to move inward to the unlocking position PB. Fig.12 and Fig.13 As shown, at this point, the fixing rod 41 combined with the knife sleeve 20 and the brake rod 42 hidden in the carrier 10 do not hinder or interfere with each other. Figures 17 to 19 As shown, the actuating cylinder 64 of the knife-carrying mechanism 60 is activated to drive its displacement member 64b to leave the first position P1, and as the displacement member 64b gradually extends out of the cylinder body 64a, the spring 654 releases the compressed energy, causing the first clamping block 651 to lean against the second clamping block 652, and the first clamping surface 651a and the second clamping surface 652a clamp the knife sleeve 20 that is located at the knife-taking position and has been unlocked. At the same time, because one end of the spring 654 abuts against the stopper 655 and the other end pushes the second clamping block 652, the first clamping block 651 and the second clamping block 652 can stably clamp the knife sleeve 20. It should be noted that when the push member 54 of the unlocking unit 50 is immediately controlled to retreat after the clamping unit 65 clamps and moves out of the knife sleeve 20, the brake rod 42 is again affected by the release of the compressed energy by the push member 43 and retreats to the locking position PA.

[0106] When the displacement member 64b continues to move toward the second position P2, the knife sleeve 20 first follows the support member 14 and then slides into the guide member 63, and when the first clamping block 651 abuts against the second stopper 70, the knife sleeve 20 abuts against the arcuate abutting surface 62c, and the knife sleeve 20 completely leaves the support member 14, and the displacement member 64b is defined as being at the second position P2. At this point, the tool changing arm of the tool changing mechanism can smoothly grab the tool rod 30 on the tool sleeve 20 to perform the tool changing operation.

[0107] When the tool change operation is completed and the knife sleeve 20 is to be brought back to the original position, the displacement member 64b is controlled to move to the first position P1. When the knife sleeve 20 is separated from the guide member 63 and enters the support member 14, the free end 653a of the fixing rod 653 will first abut against the first stopper 69, causing the first clamping block 651 to stay in the fixed position. However, due to the design of the moving stroke, the displacement member 64b will still retreat a short distance into the cylinder body 64a, thereby driving the second clamping block 652 to retreat relative to the first clamping block 651 and increase the distance between the first clamping block 651 and the second clamping block 652, so that the first clamping block 651 and the second clamping block 652 return to the original position. Figure 4 As shown, there is space for the knife sleeve 20 on the chain to pass through. At the same time, the head 41b of the fixing rod 41 on the knife sleeve 20 will be inserted into the first side hole 12a of the base 12 of the corresponding carrier 10, and the head 41b will guide the brake rod 42 to move back toward the inside of the second side hole 12b, and after the head 41b passes through the central axis of the brake rod 42, the pushing force of the pushing member 43 continues to make the shoulder 42d of the brake rod 42 abut against the stopper 41c of the fixing rod 41 again, so as to prevent the knife sleeve 20 from being loosened relative to the carrier 10 inappropriately.

[0108] In summary, the knife sleeve of the present invention has good combination with the carrier through the interposition of the locking unit, so that the chain has a good carrying effect on the knife sleeve, and the knife sleeve has no risk of loosening; secondly, the support member used to guide the knife sleeve is a universal rod body, which is matched with the through hole on the knife sleeve for the rod body to pass through. The above-mentioned matching method solves the problem that the existing track structure must match the outer contour of the knife sleeve and increase the process and cost expenditure by making a special groove, and solves the problem that the existing track structure cannot be used for knife sleeves of different specifications or different outer contours. In addition, the actuation of the unlocking unit and the knife transport mechanism is controlled by a processor. Since the processor is not the focus of the improvement of the present invention, it will not be described here.

[0109] The above description is only a preferred embodiment of the present invention. Any equivalent changes made by applying the present invention specification and the scope of patent application should be included in the patent scope of the present invention.

Claims

1. A chain-type tool magazine, comprising a track and a plurality of carriers connected in series to form a chain that can move along the track, each carrier being combined with a tool sleeve that can be separated therefrom; characterized in that: Each carrier includes a base and at least one support member, wherein the bases of adjacent carriers are pivotally connected to each other, each base has a first side hole and a second side hole that are connected to each other, and each base can move along the track, and each support member is connected to the corresponding base; Each knife sleeve is respectively matched with a corresponding support member of a carrier in a sliding pair manner; A locking unit is arranged between each carrier and the corresponding knife sleeve, and the locking unit can be manipulated between a locking state and an unlocking state, wherein when the locking unit is in the locking state, the knife sleeve is inseparably combined with the corresponding carrier, and when the locking unit is in the unlocking state, the knife sleeve can be separated from the carrier; wherein the locking unit comprises a fixing rod and a braking rod, wherein the fixing rod is integrally connected with the knife sleeve, and one end of the fixing rod can be inserted into the first side hole of the base; the braking rod is penetrated into the second side hole of the base and can move between a locking position and an unlocking position; An unlocking unit is arranged at a knife removal position on the track, and the unlocking unit is used to release the locking state of the locking unit so that the knife sleeve can be separated relative to the carrier; wherein the unlocking unit includes a top piece, and the top piece is controlled to push the brake rod to move from the locking position to the unlocking position; wherein the brake rod located at the locking position abuts against the fixing rod, so that the fixing rod cannot be pulled out from the first side hole, and the brake rod located at the unlocking position enables the fixing rod to be pulled out from the first side hole.

2. The chain-type tool magazine according to claim 1, characterized in that: The locking unit includes a pushing member arranged in the second side hole of the base, and the pushing member provides a pushing force to act on the brake rod so that the brake rod maintains moving toward the locking position; the brake rod includes a large diameter section and a small diameter section, the diameter of the large diameter section is larger than the diameter of the small diameter section, and the connection between the large diameter section and the small diameter section forms a shoulder portion; the fixed rod includes a rod body and a head connected to one end of the rod body, the diameter of the head is larger than the diameter of the rod body, and the connection between the head and the rod body forms a stop portion; when the knife sleeve is combined with the carrier and the brake rod is located in the locking position, the shoulder portion abuts against the stop portion of the fixed rod, and when the brake rod is located in the unlocking position, the shoulder portion leaves the path where the fixed rod is pulled out.

3. The chain-type tool magazine according to any one of claims 1 to 2, characterized in that: The number of the at least one support member is two, and the two support members are round rods; each knife sleeve has a sleeve hole and two through holes, the sleeve hole is used for inserting the knife rod, and the two through holes are respectively located on both sides of the sleeve hole and are respectively passed through by the two support members.

4. The chain-type tool magazine according to any one of claims 1 to 2, characterized in that: It includes a knife transport mechanism, which is arranged on one side of the track and corresponds to the knife picking position. The knife transport mechanism includes at least one guide member, a clamping unit and a displacement member, wherein the guide member is close to but does not contact the support member located at the knife picking position, and the guide member and the support member located at the knife picking position together form a guide rail, the clamping unit is connected to one end of the displacement member, and the displacement member is controlled to drive the clamping unit to move, and the clamping unit is used to clamp the knife sleeve and drive the knife sleeve to slide on the support member and the guide member.

5. The chain-type tool magazine according to claim 4, characterized in that: The displacement member is controlled to generate a linear reciprocating displacement between a first position and a second position, and the clamping unit has a first clamping surface and a second clamping surface. When the displacement member is located at the first position, the tool sleeve on the chain can pass through the space between the first clamping surface and the second clamping surface of the clamping unit; when the displacement member moves to the second position, the first clamping surface and the second clamping surface of the clamping unit clamp the tool sleeve located at the tool removal position, and when the displacement member reaches the second position, the clamped tool sleeve is separated from the support member.

6. The chain-type tool magazine according to claim 5, characterized in that: The tool transport mechanism includes a saddle, a tool sleeve stopper and an actuating cylinder. The saddle is arranged on one side of the track, the tool sleeve stopper is fixedly connected to one end of the saddle, the guide member is connected to the tool sleeve stopper, and the actuating cylinder includes a cylinder body arranged on the saddle. One end of the displacement member is penetrated through the cylinder body, and the other end is located outside the cylinder body and connected to the clamping unit. By controlling the change of the internal pressure of the cylinder body, the displacement member can be driven to produce a linear reciprocating displacement.

7. The chain-type tool magazine according to claim 6, characterized in that: The knife transport mechanism includes at least one guide rod arranged parallel to the guide member, and the clamping unit includes a first clamping block, a second clamping block, at least one fixed rod and at least one spring, wherein the guide rod passes through the first clamping block and the second clamping block, one end of the fixed rod is fixedly connected to the first clamping block, and the other end passes through the second clamping block and is provided with a stop block, the spring is sleeved on the fixed rod and its two ends respectively abut against the stop block and the second clamping block; one end of the displacement member is connected to the second clamping block, the first clamping block has the first clamping surface, and the second clamping block has the second clamping surface.

8. The chain-type tool magazine according to claim 7, characterized in that: The knife-carrying mechanism includes at least one stopper for resisting the fixing rod, so that the displacement member moving toward the first position can drive the second clamping block to move back relative to the first clamping block to increase the distance between the first clamping block and the second clamping block.

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