Tool magazine assembly

Abstract

A tool magazine assembly capable of driving a plurality of tool holders to move by a chain, and the installation positions of the tool holders can avoid improper mutual contact and jamming at the turning part of the chain, so that the turning of the chain can be designed in a more flexible manner.

Description

Technical Field

[0001] The present invention relates to automated processing equipment; in particular, it refers to a tool magazine assembly that can provide the tool storage and tool change requirements needed during the automated processing process. Background Art

[0002] Common tool magazine systems used for tool storage and providing tool change requirements can generally be classified into disc-type tool magazines, capstan-type tool magazines, and chain-type tool magazines according to the capacity, shape, and tool picking method of the tool magazine. Their common feature is that they can carry and operate a large number of tools. Although the existing tool magazine systems have reached maturity, the improvement and refinement of the number of tool sleeves used to provide tool shank insertion in the tool magazine and the influence of the load after the tool sleeve is combined with the tool shank (the tool is inserted on the tool shank) on the smooth operation of the tool sleeve are still constantly on the minds of relevant industries.

[0003] Taking the chain-type tool magazine as an example, regardless of whether its tool sleeve is designed to be pushed outwards so that the tool change arm of the automatic tool change mechanism can grasp the tool shank on the tool sleeve, or is designed to only pivot in place so that the tool change arm can smoothly grasp the tool shank on the tool sleeve, the aforementioned tool sleeve is combined on the outer side of the rotatable chain of the chain-type tool magazine, that is, on the side deviating from the rotation center. For example, the structures disclosed in the invention patent case of "Tool Magazine Chain Frame Guiding Device" with Taiwan, China Publication No. I494190 and the utility model patent case of "Chain-Type Tool Magazine for Machine Tools" with Publication No. M457602 belong to this category. Since the tool sleeves disclosed in the aforementioned patented technologies are all located on the outer side of the chain, in order to avoid improper mutual jamming of adjacent tool sleeves during operation, the running path of the chain cannot have a reverse bend design, that is, the chain can only rotate in one direction, which limits the number of tool sleeves that the tool magazine can carry.

[0004] In addition, known chain-type tool magazines are provided with support plates along the running path of the chain on both sides of the chain to support the tool sleeves, so as to improve the stability during the running of the chain. However, the contact between the tool sleeve and the support plate is a surface contact. When the number of tool sleeves increases, the contact friction generated will also increase. This situation increases the load on the driving mechanism (such as a motor), and there is a risk of noise generation due to long-term contact and wear between the tool sleeve and the support plate. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a tool magazine assembly that can increase the number of tool sleeves carried by the chain and also make the chain run smoothly.

[0006] To achieve the above object, the present invention provides a tool magazine assembly, which includes a body, a track, a chain, a plurality of tool sleeves, a tool sleeve holding structure, and a knife - reversing mechanism. The body has a mounting surface; the track is coupled to the mounting surface of the body, and the track is a loop formed by a running section and a tool - taking section. The tool - taking section has a first guide rail and a second guide rail arranged at equal intervals. The first guide rail has a first guide groove and a first restraint surface, and the second guide rail has a second guide groove and a second restraint surface. The first restraint surface and the second restraint surface are arranged facing each other, and a predetermined position of the tool - taking section is defined as a knife - reversing position; the chain includes a plurality of link blocks connected in series with each other. Each link block has a first guide wheel and a second guide wheel, and a restraint member is respectively arranged on both sides of the first guide wheel and the second guide wheel. When the link block travels through the tool - taking section, the first guide wheel is located in the first guide groove, the second guide wheel is located in the second guide groove, the restraint members on both sides of the first guide wheel contact the first restraint surface, and the restraint members on both sides of the second guide wheel contact the second restraint surface; these tool sleeves are respectively pivotally connected to a corresponding link block and can pivot between a first position and a second position in a first rotation direction and a second rotation direction with the pivot part as a fulcrum, where the first rotation direction and the second rotation direction are opposite directions; the tool sleeve holding structure includes a front stop member at the tool - taking section corresponding to the track, and a rear stop member on each link block. The front stop member restricts the tool sleeve from pivoting in the first rotation direction, and the rear stop member restricts the tool sleeve from pivoting in the second rotation direction; the knife - reversing mechanism is coupled to the body and includes a push - pull member, and the push - pull member is controlled to drive the tool sleeve at the knife - reversing position to pivot between the first position and the second position.

[0007] The effect of the present invention is that the turning of the chain can be designed in a more flexible manner, which is beneficial to the addition of the number of tool sleeves, and the configuration relationship between the guide rail and the guide wheels on the chain can improve the stability of the chain during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 and Figure 2 is a perspective view of the tool magazine assembly according to a preferred embodiment of the present invention;

[0009] Figure 3 is a simplified front view of the tool magazine assembly according to the above - mentioned preferred embodiment of the present invention;

[0010] Figure 4 is a partial perspective view of the tool magazine assembly according to the above - mentioned preferred embodiment of the present invention;

[0011] Figure 5 is Figure 4 is a side view, revealing the tool sleeve in the first position;

[0012] Figure 6 is Figure 4 is a front view;

[0013] Figure 7 Stereogram of partial components of the tool magazine assembly of the above preferred embodiment of the present invention;

[0014] Figure 8 is Figure 7 Side view of the tool sleeve among the components shown;

[0015] Figure 9 is a side view, revealing that the tool sleeve is in the second position; and

[0016] Figure 10 is Figure 3 Cross-sectional view taken along the 10-10 direction of

[0017]

Symbol Explanation

[0018] 100: Tool magazine assembly

[0019] 10: Body

[0020] 10a: Mounting surface

[0021] 20: Rail

[0022] 22: Guide plate

[0023] 24: First guide rail

[0024] 241: Rail

[0025] 24a: First guide groove

[0026] 24b: First restraint surface

[0027] 26: Second guide rail

[0028] 261: Rail

[0029] 26a: Second guide groove

[0030] 26b: Second restraint surface

[0031] 28: Guide rail

[0032] 281: Rail

[0033] 28a: Guide groove

[0034] 30: Chain

[0035] 32: Link block

[0036] 32a: Screw hole

[0037] 32b: Pin hole

[0038] 34: First guide wheel

[0039] 36: Second guide wheel

[0040] 38: Roller

[0041] 40: Tool Holder

[0042] 40a: Front End

[0043] 40b: Rear End

[0044] 40c: Receiving Hole

[0045] 40d: Pivot Hole

[0046] 42: Bump

[0047] 44: Inverted Tool Plate

[0048] 44a: Guide Groove

[0049] 46: Front Rest

[0050] 48: Rear Rest

[0051] 50: Tool Holder Retaining Structure

[0052] 51: Front Stop

[0053] 51a: L-shaped Baffle

[0054] 52: Rear Stop

[0055] 521: Mounting Plate

[0056] 521a: Hole

[0057] 522: Pivot Ear

[0058] 522a: Hole

[0059] 53: Bolt

[0060] 54: Shaft Bar

[0061] 55: Support Seat

[0062] 55a: Concave Interface

[0063] 56: Pin

[0064] 60: Inverted Tool Mechanism

[0065] 61: Saddle

[0066] 62: Cylinder Block

[0067] 63: Pushing and Pulling Part

[0068] 64: Inverted Tool Pulley

[0069] 65: Guide Rod

[0070] 66: Fixed Plate

[0071] 67: Wheel seat

[0072] 70: Automatic tool changer

[0073] 72: Cam box

[0074] 74: Motor

[0075] 76: Tool changing arm

[0076] 80: Driving motor

[0077] 82: Driving wheel

[0078] L: Tool picking section

[0079] L1: Baseline

[0080] L2: Axis

[0081] G: Notch

[0082] P1: First position

[0083] P2: Second position

[0084] T: Tool shank Detailed implementation manner

[0085] To more clearly illustrate the present invention, a preferred embodiment is given below and described in detail in conjunction with the accompanying drawings. Please refer to Figures 1 to 3 As shown, the tool magazine assembly 100 of a preferred embodiment of the present invention takes a chain-type tool magazine capable of storing multiple tools as an example. The tool magazine assembly 100 includes a body 10, a track 20, a chain 30, a plurality of tool holders 40, a tool holder holding structure 50, a tool reclining mechanism 60, and an automatic tool changer 70. The body 10 has a solid structure and has a mounting surface 10a, and the track 20 and the tool reclining mechanism 60 are combined on the mounting surface 10a. The automatic tool changer 70 is combined on the other side of the body 10 facing away from the mounting surface 10a.

[0086] The track 20 is composed of a plurality of long strip-shaped structures to form a loop including a tool picking section and a running section, and a guiding plate 22 is provided at the turning point. Here, the part of the track 20 corresponding to the tool reclining mechanism 60 is defined as the tool picking section L arranged along the horizontal direction, and the part of the track 20 other than the tool picking section L is defined as the running section. Please refer to Figure 4 , the track 20 at the tool picking section L is composed of two guide rails arranged at equal intervals, namely the first guide rail 24 and the second guide rail 26 respectively. The track 20 at the running section is composed of a single guide rail 28. In this embodiment, the aforementioned guide rails (24, 26, 28) are all composed of two parallel rail strips of long strip-shaped structures. Please also refer to Figure 5 and Figure 6As shown, a first guide rail 24 is formed with a first guide groove 24a between adjacent rail bars 241, and the bottom surface of each rail bar 241 is defined as a first restraint surface 24b. Similarly, a second guide rail 26 is formed with a second guide groove 26a between adjacent rail bars 261, and the top surface of each rail bar 261 is defined as a second restraint surface 26b. The first restraint surface 24b and the second restraint surface 26b are arranged facing each other. Please refer to Figure 10 As shown, the trajectory of the guide rail 28 forming the running section is continuous with the first guide rail 24 and has the same structure as the first guide rail 24, which is composed of two rail bars 281, and a guide groove 28a is formed between adjacent rail bars 281. In addition, the middle part of the tool taking section L is defined as the knife reversing position.

[0087] The chain 30 includes a plurality of link blocks 32 that are connected in series with each other and can pivot around the connection part as a pivot point. Please cooperate with Figure 7 As shown, each link block 32 is respectively provided with a first guide wheel 34 and a second guide wheel 36 on opposite sides, and one or more restraint members such as rollers 38 are respectively arranged on both sides of the first guide wheel 34 and the second guide wheel 36. The aforementioned guide wheels and rollers can respectively rotate around a center line, and the center line passing through the first guide wheel 34 and the second guide wheel 36 is orthogonal to the center line passing through the roller 38 on a projection plane. In addition, a baseline L1 is defined to pass through the link block 32 in a manner parallel to the center line of the roller 38, that is, the first guide wheel 34 and the second guide wheel 36 are symmetrically located on both sides of the baseline L1 at an equal distance, and the link block 32 has a plurality of screw holes 32a and pin holes 32b around the baseline L1.

[0088] These tool sleeves 40 are respectively pivotally connected to a corresponding link block 32 and can pivot. The basic shape of the tool sleeve 40 is cylindrical and has a front end 40a and a rear end 40b that are opposite to each other. The tool sleeve 40 has a receiving hole 40c that is recessed from the front end 40a to the rear end 40b. The tool bar T enters and exits the receiving hole 40c along an axis L2 passing through the receiving hole 40c. A knife locking structure (not shown in the figure) is hidden at the bottom of the receiving hole 40c to stably hold the tool bar T in the receiving hole 40c. As Figure 7 and Figure 8 As shown, a convex block 42 is integrally formed on the outer wall of each tool sleeve 40, and a detachable knife reversing plate 44 is locked on the convex block 42. The knife reversing plate 44 has a guide groove 44a with an oblique cut and an open port formed at one end. The cutting direction of the guide groove 44a maintains a preset angle with the axis L2; a front abutting member 46 in the radial direction is further provided on the outer wall of each tool sleeve 40. In this embodiment, the front abutting member 46 is composed of a roller and has a gap with the knife reversing plate 44. The rear end 40b of the tool sleeve 40 has a rear abutting member 48. In this embodiment, the rear abutting member 48 is integrally formed by protruding outward from the rear end 40b of the tool sleeve 40. Of course, a convex block can also be locked to the rear end 40b of the tool sleeve 40 to form the rear abutting member.

[0089] Please cooperate with Figures 4 to 8 As shown, the tool holder retaining structure 50 includes a front stopper 51 disposed at the tool taking section L corresponding to the track 20, and a rear stopper 52 disposed on each link block 32. The aforementioned front stopper 51 is composed of two L-shaped baffles 51a, and the two L-shaped baffles 51a are locked at a distance from each other on the rail 241 of the first guide rail 24 that is relatively far from the body 10. The aforementioned interval forms a notch G, and the notch G exactly corresponds to the knife-inverting position at the middle part of the tool taking section L. In other embodiments, the front stopper can be composed of a single L-shaped baffle and the notch can be reserved at the corresponding knife-inverting position. The rear stopper 52 of the tool holder retaining structure 50 is a U-shaped folding plate including a mounting plate 521 and two pivot ears 522 connecting the mounting plate 521. The rear stopper 52 is firmly fixed to the link block 32 by bolts 53 and pins 56 respectively passing through the holes 521a on the mounting plate 521 and then locking into the screw holes 32a of the link block 32 and inserting into the pin holes 32b. The tool holder 40 is pivotally connected to the link block 32 by a shaft rod 54 passing through the holes 522a on the pivot ears 522 and the pivot holes 40d on the tool holder 40. In the foregoing, the tool holder 40 is indirectly pivotally connected to the link block 32 through the rear stopper 52. However, in practice, the link block can be integrally formed with a pivot ear structure so that the tool holder can be directly pivotally connected to the link block. In addition, the tool holder retaining structure 50 further includes a supporting seat 55 (refer to Figure 4 ), the supporting seat 55 is disposed on the body 10 and below the second guide rail 26 of the track 20, and corresponds to the knife-inverting position at the middle part of the tool taking section L. The supporting seat 55 has a concave interface 55a.

[0090] The knife-inverting mechanism 60 includes a saddle 61, a cylinder block 62, a push-pull member 63, a knife-inverting pulley 64 and a guiding rod 65. Among them, the saddle 61 is combined with the mounting surface 10a of the body 10. The cylinder block 62 and the push-pull member 63 form a cylinder structure capable of driving the push-pull member 63 to move by controlling the pressure change inside the cylinder block 62. The cylinder block 62 is disposed on the saddle 61. The push-pull member 63 is a piston rod, one end of which is located inside the cylinder block 62, and the other end passes through the saddle 61 and is connected to a fixed plate 66. A U-shaped wheel seat 67 is fixedly connected below the fixed plate 66. The knife-inverting pulley 64 is pivotally connected to the wheel seat 67. The guiding rod 65 passes through the saddle 61 in a manner parallel to the push-pull member 63 and one end is connected to the fixed plate 66. When the push-pull member 63 generates a linear reciprocating displacement, the guiding rod 65 can be driven to move synchronously. The function of the guiding rod 65 is to strengthen the stability of the push-pull member 63 during displacement. The aforementioned knife-inverting pulley 64 can enter the guide groove 44a of the knife-inverting plate 44 on the tool holder 40 located at the knife-inverting position, and push or pull up the tool holder 40 as the push-pull member 63 moves up and down, so that the tool holder 40 located at the knife-inverting position can use the shaft rod 54 as a fulcrum at Figure 5The first position P1 shown pivots between Figure 9 the second position P2 shown. When the tool holder 40 is in the first position P1, the axis L2 coincides with the baseline L1. When the tool holder 40 is in the second position P2, the tool holder 40 abuts against the concave interface 55a of the abutting seat 55. Herein, it is defined that the direction in which the tool holder 40 swings from the horizontally arranged first position P1 to the vertically arranged second position P2 is the first rotation direction, and the direction in which the tool holder 40 swings from the vertically arranged second position P2 to the horizontally arranged first position P1 is the second rotation direction, that is, the first rotation direction and the second rotation direction are opposite directions. Additionally, it should be noted that the installation position of the above-mentioned reverse tool pulley 64 is preferably located on one side deviating from the up-and-down movement path of the push-pull member 63, as Figure 5 shown, and the guide groove 44a of the reverse tool plate 44 is inclined to ensure the smooth guiding and pushing of the tool holder 40.

[0091] Please refer to Figure 2 . The automatic tool changer mechanism 70 includes a cam box 72, a motor 74, and a tool changing arm 76. The cam box 72 is coupled to the body 10. The motor 74 and the tool changing arm 76 are respectively located on both sides of the cam box 72. The motor 74 provides the power required to drive the tool changing arm 76 to perform the tool changing operation. The tool changing arm 76 is used to grasp the tool bar T in the tool holder 40 that is docked at the reverse tool position and is in the second position P2 for tool changing operations. Since the automatic tool changer mechanism 70 is a known technology, it will not be elaborated herein.

[0092] The above is the structural description of the tool magazine assembly 100 of the preferred embodiment of the present invention. The following explains that it can effectively increase the number of tool holders carried and improve the stability during the operation of the chain.

[0093] Please cooperate with Figures 5 to 7 shown. In this embodiment, the tool holder 40 is pivotally installed on one side of the link block 32. When the tool holder 40 is in the first position P1, it is horizontally arranged. At this time, the axis L2 passing through the center of the tool holder 40 coincides with the baseline L1 of the link block 32. The above structural relationship enables the tool holder 40 not to be improperly stuck to each other at the reverse winding part of the running path of the chain 30 when the position of the tool holder 40 changes as the chain 30 moves. It improves the defect that the chain disclosed in the above-mentioned patents such as the "Tool Magazine Chain Frame Guiding Device" with Taiwan Patent No. I494190 and the "Chain-Type Tool Magazine for Machine Tools" with Taiwan Patent No. M457602 can only rotate in one direction and cannot reverse the running path because the tool holder is located outside the chain (i.e., on the side deviating from the rotation center). Therefore, within the limited area where the body 10 can load the track, since the track 20 and the chain 30 of the tool magazine assembly of the present invention can arbitrarily change the running direction, that is, can be designed in a way of multiple reverse windings, the length of the chain 30 is increased so that the chain 30 can carry more tool holders 40.

[0094] When the driving motor 80 drives the chain 30 to run along the track 20 through the driving wheel 82, the first guide wheel 34 and the second guide wheel 36 of the chain link block 32 passing through the knife-taking section L of the track 20 will be Figure 5 As shown, the chain blocks 32 enter the first guide groove 24a of the first guide rail 24 and the second guide groove 26a of the second guide rail 26, respectively, and the rollers 38 (constraints) located on both sides of the first guide wheel 34 contact the first restraint surface 24b on the bottom surface of the rail 241, respectively, and the rollers 38 (constraints) located on both sides of the second guide wheel 36 contact the second restraint surface 26b on the top surface of the rail 261, respectively. At this point, the chain block 32 is limited in the up, down, left and right directions and can move stably in the tool removal section L. Even if the chain block 32 comes to the inverted tool position, it is still limited in all directions and will not be subjected to unilateral force. At the same time, the front stop 46 on the tool sleeve 40 abuts against the L-shaped baffle 51a that constitutes the front stop 51, so that the tool sleeve 40 will not swing downward due to its own weight. In other words, the front stop 51 of the tool sleeve retaining structure 50 limits the tool sleeve 40 from pivoting in the first rotation direction. It must be noted that the aforementioned first rotation direction is Figure 5 In the state shown, the first rotation direction is counterclockwise, but depending on the position of the knife sleeve 40, the first rotation direction is not necessarily counterclockwise. Figure 3 and Figure 10 The knife sleeve 40 is shown as being located at a horizontal section above the track 20 . Since its front abutment member 46 is located below the shaft 54 ​​, the first rotation direction in this state is clockwise.

[0095] When one of the chain link blocks 32 moves to the knife-turning position, the knife sleeve 40 pivotally connected to the chain link block 32 will correspond the guide groove 44a of its knife-turning plate 44 to the knife-turning pulley 64 of the knife-turning mechanism 60. When the push-pull member 63 is controlled to move downward, the knife-turning pulley 64 will push the knife sleeve 40 to pivot in the first direction, and the front abutment member 46 on the knife sleeve 40 can just pass through the gap G until the knife sleeve 40 abuts against the concave interface 55a of the supporting seat 55 and stops at the second position P2. At this point, the tool changing arm 76 can smoothly grab the knife rod T in the knife sleeve 40.

[0096] In addition, for the link block 32 passing through the running section of the track 20, it is mainly limited by the first guide wheel 34 entering the guide groove 28a of the guide rail 28, and a guiding plate 22 is provided at each turning point of the track 20, so that the chain 30 can run stably. Since the chain 30 mainly realizes the limiting purpose through the guide rail of the long strip structure, it is not necessary to additionally install a support plate along the running path on both sides of the chain 30. Therefore, the defect that the tool sleeve of the existing chain-type tool magazine is easy to touch the support plate and generate excessive friction can be improved, and the generation of noise can also be effectively reduced. Although there is no support plate provided on the track 20 in this embodiment, although the tool sleeve 40 at the horizontal section above the track 20 has a tendency to swing downward due to its own weight, it is resisted by the rear abutting member 48 at the rear end 40b of the tool sleeve 40 against the mounting plate 521 of the rear stopper 52, so as to avoid the improper downward swing of the tool sleeve 40 and maintain the horizontal swing direction at the first position P1. In other words, in this state, the rear stopper 52 restricts the tool sleeve 40 from pivoting in the second rotation direction.

[0097] In summary, the tool magazine assembly of the present invention can be designed in a more flexible manner because the turning of the chain is no longer limited by the position of the tool sleeve, which is beneficial to the increase of the number of tool sleeves; in addition, the track is mainly configured with a guide rail of a long strip structure and guide wheels on the chain, which can improve the stability of the chain during operation. The above are only the preferred and feasible embodiments of the present invention, and all equivalent changes made by applying the description and claims of the present invention should be included in the patent scope of the present invention.

Claims

1. A tool magazine assembly, characterized in that, Comprising: A body having a mounting surface; A track coupled to the mounting surface of the body, the track being a loop including a running section and a tool-taking section, the tool-taking section of the track having a first guide rail and a second guide rail arranged at equal intervals, the first guide rail having a first guide groove and a first restraint surface, the second guide rail having a second guide groove and a second restraint surface, wherein the first restraint surface and the second restraint surface are arranged facing each other, and a predetermined position of the tool-taking section is defined as an inverted tool position; A chain including a plurality of chain link blocks connected in series with each other, each chain link block having a first guide wheel and a second guide wheel, and having a restraint member on both sides of the first guide wheel and the second guide wheel respectively. When the chain link block travels through the tool-taking section, the first guide wheel is located in the first guide groove, the second guide wheel is located in the second guide groove, the restraint members on both sides of the first guide wheel are in contact with the first restraint surface, and the restraint members on both sides of the second guide wheel are in contact with the second restraint surface; A plurality of tool holders respectively pivotally connected to a corresponding chain link block and capable of pivoting between a first position and a second position in a first rotation direction and a second rotation direction with the pivotal connection portion as a fulcrum, wherein the first rotation direction and the second rotation direction are opposite directions; A tool holder holding structure including a front stopper at a position corresponding to the tool-taking section of the track, and a rear stopper on each chain link block, wherein the front stopper restricts the tool holder from pivoting in the first rotation direction, and the rear stopper restricts the tool holder from pivoting in the second rotation direction; and An inverted tool mechanism coupled to the body and including a push-pull member, the push-pull member being controlled to drive the tool holder at the inverted tool position to pivot between the first position and the second position.

2. The tool magazine assembly according to claim 1, wherein, Each chain link block defines a baseline, the first guide wheel and the second guide wheel are located on both sides of the baseline, and each tool holder defines an axis, wherein when the tool holder is in the first position, the axis coincides with the baseline.

3. The tool magazine assembly according to claim 2, wherein, An inverted tool plate is connected to the outer wall of each tool holder, the inverted tool plate having a guide groove, and one end of the push-pull member of the inverted tool mechanism is connected with an inverted tool pulley, the inverted tool pulley cooperating with the guide groove of the inverted tool plate on the tool holder at the inverted tool position and entering the guide groove when the push-pull member moves.

4. The tool magazine assembly according to claim 3, wherein The inverted tool pulley is located on one side deviating from the moving path of the push-pull member, and the guide groove of the inverted tool plate is an inclined groove forming an angle with the axis.

5. The tool magazine assembly according to claim 3, wherein, The inverted tool mechanism includes a saddle, a cylinder block and a guide rod, the saddle is coupled to the mounting surface of the body, the cylinder block is arranged on the saddle, one end of the push-pull member is located inside the cylinder block, and the other end passes through the saddle and is connected with the inverted tool pulley. By controlling the change of the internal pressure of the cylinder block, the push-pull member can be driven to generate a linear reciprocating displacement, and the guide rod passes through the saddle and moves synchronously with the push-pull member.

6. The tool magazine assembly according to claim 1, wherein, The front stop of the tool holder retaining structure is connected to the first guide rail and has at least one baffle. The baffle has a notch corresponding to the knife - reversing position. Each rear stop has a mounting plate and two pivot ears connecting the mounting plate. The mounting plate is connected to the corresponding link block; each tool holder is pivotally connected between the two pivot ears at its rear end, and the outer wall of each tool holder has a front abutting member arranged radially and a rear abutting member arranged at the rear end. When the link block travels through the tool - taking section, the front abutting member abuts against the baffle; when one of the link blocks moves to the knife - reversing position, the push - pull member of the knife - reversing mechanism can drive the tool holder corresponding to the knife - reversing position to pivot, and the front abutting member passes through the notch; when the rear abutting member abuts against the mounting plate, the tool holder is held in the first position.

7. The tool magazine assembly according to claim 1, wherein The tool holder retaining structure includes a supporting seat. The supporting seat is arranged on the body. When the push - pull member of the knife - reversing mechanism drives the tool holder at the knife - reversing position to pivot to the second position, the tool holder abuts against the supporting seat.

8. The tool magazine assembly according to claim 7, characterized in that, An automatic tool - changing mechanism is included. The automatic tool - changing mechanism is combined with the other side of the body facing away from the mounting surface. The automatic tool - changing mechanism includes a tool - changing arm. The tool - changing arm is used to grasp the tool bar in the tool holder abutting against the supporting seat.

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