Door opening and closing device for tool magazine, chain type tool magazine and machine tool

Abstract

The utility model relates to the technical field of CNC machine tools, and provides a door opening and closing device for a tool magazine, a chain-type tool magazine and a machine tool, the door opening and closing device is used for being arranged on a tool conveying structure and a magazine doorway, the door opening and closing device comprises a guide rail, a door opening and closing device and a door opening and closing device, the guide rail is arranged on the tool conveying structure, a guide groove is formed in the guide rail, and the guide groove is provided with an inclined section and a horizontal section; the edge of one side of the door body is hinged to the garage door opening, a switch datum plane is formed on the hinge axis, and the switch datum plane is parallel to the inner side surface of the door body and penetrates through the hinge axis; the sliding part is arranged on the side, facing the garage door opening, of the door body and movably embedded in the guide groove, and the sliding part deviates from the switch reference surface; the guide rail is driven by movement of the cutter conveying structure in the in-out direction so that the sliding piece can move in the inclined section and the horizontal section. The problems that in the prior art, the stroke of a connecting rod mechanism is small, and the opening angle of opening doors on the two sides cannot meet the opening requirement of the tool magazine are solved.

Description

Technical Field

[0001] This application relates to the field of CNC machine tool technology, and more specifically, to a door opening and closing device for a tool magazine, a chain-type tool magazine, and a machine tool. Background Technology

[0002] CNC machine tools are widely used in the machining of precision parts and products due to their small size and high machining accuracy. However, with the increasing complexity of products and the continuous improvement of machining requirements, existing CNC machine tools require a sufficiently large tool magazine capacity. Therefore, existing CNC machine tools are usually equipped with disc tool magazines or chain tool magazines. Chain tool magazines are a type of tool storage or tool changing device in CNC machining centers. Due to their large capacity, they are increasingly widely used in CNC machine tools; for example, CNC machining centers typically use chain tool magazines.

[0003] In existing chain-type tool magazines, the tool transfer structure needs to be pushed out or retracted from the magazine door during tool changing. This necessitates opening or closing the door at the magazine door as the tool transfer structure moves in and out. In the existing solution (CN113118839A, patent title: "A Chain-Type Tool Magazine"), a linkage mechanism is used to open the doors from both sides. However, this linkage mechanism limits the travel of the internal tool transfer structure, resulting in a relatively small travel distance, and the opening angle of the side doors cannot meet the opening requirements of the tool magazine.

[0004] Therefore, existing technologies still need to be improved and developed. Utility Model Content

[0005] The purpose of this application is to provide a door opening and closing device for a tool magazine, a chain-type tool magazine, and a machine tool, which solves the problem that the existing technology uses a linkage mechanism with a relatively small stroke, and the opening angle of the doors on both sides cannot meet the opening requirements of the tool magazine.

[0006] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0007] On the one hand, this application provides an opening and closing device for a tool magazine, which is installed on the tool transfer structure and the magazine door. The opening and closing device includes: a guide rail, which is installed on the tool transfer structure and has a guide groove, which has an inclined section and a horizontal section.

[0008] The door body has one side edge hinged to the doorway, forming an opening and closing reference surface on the hinge axis, wherein the opening and closing reference surface is parallel to the inner surface of the door body and passes through the hinge axis;

[0009] The sliding component is located on the side of the door facing the warehouse entrance and is movably embedded in the guide groove. The sliding component is offset from the switch reference surface.

[0010] The guide rail is driven by the movement of the tool transmission structure in the in-out direction, so that the sliding member moves within the inclined section and the horizontal section;

[0011] When the sliding member moves from the inclined section to the horizontal section, the sliding member pushes the door body to rotate outward around the hinge, so as to open the library door;

[0012] When the sliding member moves from the horizontal section to the inclined section, the sliding member pushes the door body to rotate inward around the hinge, so as to close the library door.

[0013] Optionally, the sliding member includes: a pulley seat fixedly arranged on the inner surface of the door body;

[0014] A guide roller rotatably arranged on the pulley seat.

[0015] Optionally, a first acute angle a is formed between the inclined section and the horizontal section, a connecting line between the hinge axis and the rotation center of the guide roller forms an eccentric line, and a deviation angle b is formed between the eccentric line and the switch reference plane, where 2.5b < a and a < 3b.

[0016] Optionally, when the door body closes the library door, the center line of the chute in the horizontal section is located between the hinge axis and the guide roller;

[0017] The distance between the center line of the chute in the horizontal section and the hinge axis is a first distance L1, and the distance between the center line of the chute in the horizontal section and the axis of the guide roller is a second distance L2, where L1:L2 = 0.75 - 0.9.

[0018] Optionally, the guide rail forms an upper side edge and a lower side edge through the guide groove, and the thickness of the upper side edge is less than that of the lower side edge.

[0019] Optionally, the guide rail is arranged on the tool transmission structure through a door-pushing bracket;

[0020] The door-pushing bracket includes: a bottom plate, a support plate and a bearing plate, and the bottom plate, the support plate and the bearing plate are in a Z-shaped structure;

[0021] A kidney-shaped hole is formed in the bottom plate, and it is connected to the tool transmission structure by passing a screw through the kidney-shaped hole;

[0022] The guide rail is fixed on the bearing plate.

[0023] Optionally, a buffer block is arranged on the inner surface of the door body.

[0024] On the other hand, the present application also proposes a chain-type tool magazine, including: a library door, a tool transmission structure and the door opening and closing device for the tool magazine as described above;

[0025] The tool transmission structure enters and exits the tool magazine through the library door.

[0026] Optionally, the tool transfer structure is connected to an inlet / outlet power assembly, and the tool transfer structure moves in and out of the warehouse doorway by being driven by the inlet / outlet power assembly.

[0027] Thirdly, this application also proposes a machine tool including the chain-type tool magazine as described above.

[0028] The beneficial effects of the opening and closing device for a tool magazine, the chain-type tool magazine, and the machine tool provided in this application are at least as follows: By setting a guide rail on the tool transfer structure, one edge of the door is hinged to the magazine door. The guide groove on the guide rail cooperates with a sliding member on the door. Due to the eccentric setting of the sliding member, when the guide rail is driven by the movement of the tool transfer structure in the in-and-out direction, the sliding member moves within an inclined section and a horizontal section. The inclined section is inclined upwards from the outside to the inside, and the horizontal section can be horizontal. When the sliding member moves within the inclined section, the inclined guide groove pushes the sliding member to slide, thereby pushing the door to rotate around the hinge axis. When the sliding member moves within the horizontal section, the door is kept at its maximum opening, allowing the tool transfer structure to continue moving out or in into the magazine door without being affected. In this way, the cooperation between the inclined section and the horizontal section allows the door to continuously maintain its maximum opening, and the stroke of the tool transfer structure is unrestricted. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 A cross-sectional view of a chain-type tool magazine provided in an embodiment of this application;

[0031] Figure 2 A cross-sectional view of a chain-type tool magazine provided as an embodiment of this application;

[0032] Figure 3 A cross-sectional view of a door opening and closing device for a tool magazine provided in an embodiment of this application;

[0033] Figure 4 This application provides a state diagram of a door opening / closing device for a tool magazine during the door opening process, as shown in the embodiment of the present application. Figure 4 Figure (a) shows a structural diagram of the closing moment, in which... Figure 4 Figure (b) shows the structural diagram at the lowest point;

[0034] Figure 5This application provides a state diagram of a door opening / closing device for a tool magazine during the door opening process, as shown in the embodiment of the present application. Figure 5 Figure (c) is a structural schematic diagram at the starting point of the circular arc segment, where... Figure 5 Figure (d) is a schematic diagram of the structure on the horizontal segment.

[0035] The following are the labeling elements in the figure:

[0036] 100. Warehouse doorway; 200. Tool transfer structure; 300. Inlet / outlet power assembly; 400. Guide rail; 410. Guide groove; 420. Inclined section; 425. Arc section; 430. Horizontal section; 440. Upper side guard; 450. Lower side guard; 500. Door body; 510. Hinge; 520. Buffer block; 600. Sliding component; 610. Pulley seat; 620. Guide roller; 630. Axle; 700. Push door bracket; 710. Base plate; 711. Waist-shaped hole; 720. Support plate; 730. Bearing plate. Detailed Implementation

[0037] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0038] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it may be directly or indirectly located on that other component. When a component is referred to as "connected to" another component, it may be directly or indirectly connected to that other component. The terms "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate orientations or positions based on the accompanying drawings, and are for ease of description only, and should not be construed as limiting the technical solution. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. "A plurality" means two or more, unless otherwise explicitly defined.

[0039] Example 1

[0040] like Figure 1 , Figure 2As shown, this embodiment proposes an opening and closing device for a tool magazine, which is installed on the tool magazine, which can be a chain-type tool magazine or a disc-type tool magazine. This embodiment uses a chain-type tool magazine as an example for structural description. The chain-type tool magazine has a magazine door 100, which connects the chain-type tool magazine to the machining area of ​​the machine tool. During the machining process of the machine tool, the magazine door 100 is closed, and the tool transfer structure 200 is located inside the tool magazine; when a tool change is required, the magazine door 100 is opened, the tool transfer structure 200 is pushed out from the magazine door 100 to the machining area, then the tool on the machine tool spindle is placed into the tool transfer structure 200, and then the tool to be changed on the tool transfer structure 200 is placed on the machine tool spindle. After the tool change is completed, the tool transfer structure 200 is pulled back into the tool magazine from the magazine door 100, completing the tool change process. Therefore, the opening and closing device for the tool magazine in this embodiment is installed on the tool transfer structure 200 and the magazine door 100, mainly to open and close the magazine door 100 when the tool transfer structure 200 enters or exits the magazine door 100.

[0041] like Figure 1 , Figure 2 As shown, the opening and closing device for the tool magazine in this embodiment mainly includes: a guide rail 400, a door body 500, and a sliding member 600. The guide rail 400 is mounted on the tool transfer structure 200 and has a guide groove 410, which has an inclined section 420 and a horizontal section 430. One edge of the door body 500 is hinged to the magazine door 100, forming a switching reference surface on the hinge axis. This switching reference surface is parallel to the inner surface of the door body 500 and passes through the hinge axis. The sliding member 600 is located on the side of the door body 500 facing the magazine door 100 and is movably embedded in the guide groove 410. The sliding member 600 is offset from the switching reference surface. The guide rail 400 is driven by the movement of the tool transfer structure 200 along the inlet / outlet direction, causing the sliding member 600 to move within the inclined section 420 and the horizontal section 430. Figure 1 , Figure 5 As shown in Figure (d), when the sliding member 600 moves from the inclined section 420 to the horizontal section 430, the sliding member 600 pushes the door body 500 to rotate outward around the hinge 510, thereby opening the warehouse door 100. Figure 1 , Figure 4 Chinese (b) map Figure 5As shown in Figure (c), when the sliding member 600 moves from the horizontal section 430 to the inclined section 420, the sliding member 600 pushes the door body 500 to rotate inward around the hinge 510 to close the storage door 100. For ease of structural description, the structure is explained using the upward-flipping opening or closing of the storage door 100 as an example, with the side exiting the storage door 100 as the outer side (front side) and the side entering the storage door 100 as the inner side (rear side). In the specific structure, the storage door 100 has a door frame, and the upper edge of the door body 500 can be connected to the upper beam of the door frame through multiple hinges. The flipping axis of the hinges serves as the hinge axis, allowing the door body 500 to flip upward or downward around the hinge axis. Flipping upward opens the storage door 100, and flipping downward closes the storage door 100. Figure 5 As shown in Figure (d), the horizontal segment 430 of the guide groove 410 extends horizontally for a predetermined length along the direction from the inside to the outside (from back to front). Its specific length can be set to match the infeed and outfeed stroke of the tool transfer structure 200; the longer the infeed and outfeed stroke of the tool transfer structure 200, the longer the length of the horizontal segment 430. The front end of the horizontal segment 430 bends downwards and forms an inclined segment 420 through an arc transition. The inclined segment 420 can be a straight line that gradually slopes forward from top to bottom. Figure 1 , Figure 4 Chinese (b) map Figure 5 As shown in Figure (c), when the sliding member 600 slides within the inclined section 420, it can push the door body 500 to rotate around the hinge 510.

[0042] like Figure 1 , Figure 2 As shown, the opening and closing device for the tool magazine in this embodiment has a guide rail 400 on the tool transfer structure 200, and one side edge of the door 500 is hinged to the door 100. The guide groove 410 on the guide rail 400 cooperates with the sliding member 600 on the door 500. Since the sliding member 600 is eccentrically set, when the guide rail 400 is driven by the movement of the tool transfer structure 200 in the in-out direction, the sliding member 600 moves within the inclined section 420 and the horizontal section 430. The inclined section 420 is inclined upward in the direction from the outside to the inside, and the horizontal section 430 can be set horizontally. When the sliding member 600 moves within the inclined section 420, the inclined guide groove 410 pushes the sliding member 600 to slide, thereby pushing the door 500 to flip around the hinge axis. When the sliding member 600 moves within the horizontal section 430, it keeps the door 500 at its maximum opening, allowing the tool transfer structure 200 to continue moving out or in into the doorway 100 without being affected. In this way, the cooperation between the inclined section 420 and the horizontal section 430 keeps the door 500 at its maximum opening, and the stroke of the tool transfer structure 200 is unrestricted.

[0043] It should be noted that this door opening and closing device can also be located at the lower edge, left edge, or right edge of the magazine door 100. This allows for the door body 500 to be hinged to the corresponding edge side, and the guide rail 400 to be adjusted to the corresponding direction, thus resolving the technical issue. If multiple tool magazines are installed side-by-side, the door body 500 located at the left or right edge may interfere with the adjacent magazine door 100s on both sides. Therefore, using a top-opening door design can avoid this problem. If there are two tool magazines, a left-opening door on one side and a right-opening door on the other can also be used.

[0044] like Figure 1 , Figure 2 As shown, the sliding component 600 in this embodiment further includes a pulley seat 610 and a guide roller 620. The pulley seat 610 is fixedly disposed on the inner surface of the door body 500, and the guide roller 620 is rotatably disposed on the pulley seat 610. The pulley seat 610 can be an isosceles triangular seat, with the base of the isosceles triangular seat fixed to the inner surface of the door body 500. The guide roller 620 is connected to the apex of the isosceles triangular seat via an axle 630, with one end of the axle 630 fixed to the isosceles triangular seat. The guide roller 620 is rotatably disposed on the axle 630, thus being located on one side of the isosceles triangular seat. This ensures that the line connecting the rotation center of the guide roller 620 to the switch reference plane coincides with the perpendicular bisector of the base of the isosceles triangular seat. The isosceles triangular seat provides stable support for the guide roller 620, improving the stability and load-bearing capacity of the structure.

[0045] like Figure 1 , Figure 4As shown in Figure (a), further, a first acute angle a is formed between the inclined section 420 and the horizontal section 430 of this embodiment. The connection line between the hinge axis and the rotation center of the guide roller 620 forms an eccentric line, and a deviation angle b is formed between the eccentric line and the switch reference plane. The function of pushing the door is realized jointly by the eccentricity of the guide roller 620 and the inclination of the inclined section 420. When the first acute angle a is set too small, it will cause the flipping to be too long. Although the force on the guide roller 620 is relatively stable during the pushing process, it will increase the length of the part where the inclined section 420 protrudes from the horizontal section 43,so that a very deep concave clearance groove needs to be provided correspondingly on the inner wall of the door body 500, which increases the overall dimension of the door body 500 in the front and back directions, resulting in a large space occupied by the structure. When the first acute angle a is set too large, the force during the flipping process will become larger, making it inconvenient to slide in the guide groove 410. Through research, in the size range of 2.5b < a and a < 3b, it can be ensured that while the guide roller 620 moves smoothly (stable force) in the guide groove 410, the inclined section 420 will not protrude too much from the horizontal section 430, just greater than the outermost dimension of the cutter (general tool shank diameter 30mm) protruding forward on the cutter transmission structure 200 by about 10mm. This avoids the collision of the cutter conveyed on the cutter transmission structure 200 during the opening and closing process of the door body 500, and can also protect the cutter on the cutter transmission structure 200 while realizing the opening and closing function of the door body 500.

[0046] In the specific structure of this embodiment, when the door body 500 of the tool magazine is in the closed state, the dimension between the hinge axis and the rotation center of the guide roller 620 in the front and back direction (X direction) is 49.4mm, and the dimension between the hinge axis and the rotation center of the guide roller 620 in the up and down direction (Y-axis direction) is 109mm. The deviation angle b on the inner side of the door body 500 is set to 24°, and the first acute angle a is 70°. With this structural dimension, while realizing the function of opening and closing the door, it can better cooperate with the cutter transmission structure 200 to complete the entry and exit, and the opening and closing of the door body 500 will not interfere with the path of the conveyed cutter.

[0047] As Figure 1 、 Figure 4As shown in Figure (a), further, in this embodiment, when the door 500 closes the doorway 100, the centerline of the groove of the horizontal section 430 is located between the hinge axis and the guide roller 620. The distance between the centerline of the groove of the horizontal section 430 and the hinge axis is the first spacing L1, and the distance between the centerline of the groove of the horizontal section 430 and the axis of the guide roller 620 is the second spacing L2, where L1:L2 = 0.75-0.9. Setting the horizontal section 430 so that the centerline of the groove of the horizontal section 430 is located between the hinge axis and the guide roller 620 and slightly above it allows the inclined section 420 to have a longer guiding distance, so that the guide roller 620 has sufficient distance to slide within the inclined section 420 while the door 500 is gradually pushed open. This avoids the door 500 being pushed open too quickly, which could cause a sudden change in the load-bearing capacity of the guide roller 620 and prevent jamming. Furthermore, during the lowering of the door 500, it is also necessary to prevent the door 500 from suddenly closing and causing an impact.

[0048] In this embodiment, the first spacing L1 can be 49.2 mm, and the second spacing L2 can be 59.8 mm. This makes L1:L2 = 0.82 (approximately). This allows the door 500 to maintain a relatively stable rotation speed during the opening and closing process, and improves the coordination between the opening and closing process and the entry and exit of the tool transfer structure 200 at the warehouse doorway 100.

[0049] like Figure 1 , Figure 2 As shown, in this embodiment, the guide rail 400 forms an upper stop 440 and a lower stop 450 through a guide groove 410, with the upper stop 440 being thinner than the lower stop 450. The guide rail 400 is divided into upper and lower parts by the guide groove 410. The surfaces of the lower stop 450 facing the guide groove 410 and the lower stop 450 facing the guide groove 410 can be used to contact the guide roller 620, thereby pushing the guide roller 620 to move in a guiding manner. The door 500 is pushed out by utilizing the two sides in the guide groove 410 to simultaneously push out and retract. Setting the thickness of the lower stop to be thicker provides more stable support for the guide roller 620 during the pushing process, improving the stability of the structure.

[0050] like Figure 1 , Figure 3As shown, in this embodiment, the guide rail 400 is further mounted on the tool transfer structure 200 via a push-door bracket 700. The push-door bracket 700 specifically includes a base plate 710, a support plate 720, and a load-bearing plate 730, which form a Z-shaped structure. The base plate 710 has a slotted hole 711, and is connected to the tool transfer structure 200 by screws passing through the slotted hole 711. The guide rail 400 is fixed to the load-bearing plate 730. Specifically, the Z-shaped structure formed by the base plate 710, support plate 720, and load-bearing plate 730 provides stable support, allowing the guide rail 400 to be stably fixed to the tool transfer structure 200. Multiple circular holes are provided on the support plate 720 and load-bearing plate 730, effectively reducing the weight of the push-door bracket 700.

[0051] like Figure 4 As shown in Figure (a), further, a buffer block 520 is provided on the inner surface of the door 500 in this embodiment. Multiple buffer blocks 520 can be provided. When the door 500 is closed, the buffer blocks 520 contact the edge of the doorway 100, thus preventing direct collision between the door 500 and the door frame of the doorway 100 and providing protection.

[0052] like Figure 4 , Figure 5 As shown, in the specific structure of this embodiment, during the process of the door 500 moving from closed to open, the guide rail 400 pushes from back to front, causing the guide roller 620 to move downwards within the inclined section 420, first moving to the lowest point of the roller, then from the lowest point to the arc section 425 connecting the inclined section 420 and the horizontal section 430, and finally transitioning from the arc section 425 to the horizontal section 430. The specific dimensions at each node position are as follows:

[0053] like Figure 4 As shown in Figure (b), at the lowest point, the guide roller 620's rotation center is directly below the hinge axis. At this point, the vertical dimension between the rotation center and the hinge axis is 119.67 mm. The angle between the opening / closing reference plane of the door 500 and the inclined section 420 of the guide groove 410 is 4°. The actuation is performed by the guide rail 400 pushing the roller 620 forward from back to front, with the guide roller 620 sliding downwards within the inclined section 420, and the door 500 rotating outwards around the hinge center. In this embodiment, the guide roller 620 has a diameter of 19 mm, and the guide groove 410 has a width of 19.5 mm. When the guide roller 620 is pushed to the lowest point, the guide rail 400 moves forward by approximately 67.6 mm.

[0054] like Figure 5As shown in Figure (c), continue moving the guide rail 400 so that the guide roller 620 slides along the inclined section 420 to the arc section 425 at its lowest point. The radius of the centerline of the arc section 425 is 31.6 mm. At the starting point of the arc section 425, the distance from the rotation center of the guide roller 620 to the hinge axis in the front-to-back direction is 75.3 mm, and the distance from the rotation center of the guide roller 620 to the hinge axis in the vertical direction is 59.1 mm. At this point, the opening / closing reference plane forms a 79° angle with the vertical direction. The extension dimension of the guide rail 400 (relative to the closed position of the door 500) is 126.3 mm. At the end of the arc segment 425, the door 500 is open at 90°, which is equivalent to the switch reference plane being in a horizontal state. The rotation center of the guide roller 620 to the hinge axis in the front-to-back direction is 87.2 mm, the rotation center of the guide roller 620 to the hinge axis in the vertical direction is 39.5 mm, and the extension dimension of the guide rail 400 (relative to the closed position of the door 500) is 167.3 mm.

[0055] like Figure 5 As shown in Figure (d), the guide rail 400 continues to move, causing the guide roller 620 to move within the horizontal section 430, thereby keeping the door 500 in a horizontal state. In this way, the extension size of the guide rail 400 does not affect the opening and closing of the door 500, and the movement of the tool transmission structure 200 is unrestricted.

[0056] Example 2

[0057] like Figure 1 , Figure 2 As shown, this embodiment proposes a chain-type tool magazine, including: a magazine door 100, a tool transfer structure 200, and an opening and closing device for the tool magazine as described above; the tool transfer structure 200 enters and exits the tool magazine through the magazine door 100. A guide rail 400 is fixedly connected to the top of the tool transfer structure 200 via a push-door bracket 700. When a tool change is required, as the tool transfer structure 200 exits the magazine door 100, it drives the guide rail 400 to move, thereby pushing the door 500 to flip through the sliding member 600 within its guide groove 410. After flipping to its maximum travel, the magazine door 100 is fully opened, and the tool transfer structure 200 can continue to move outward, thus overcoming the travel limitation of the tool transfer structure 200.

[0058] like Figure 1 , Figure 2As shown, the tool transfer structure 200 is further connected to an inlet / outlet power assembly 300, which drives the tool transfer structure 200 to move in and out of the magazine door 100. The inlet / outlet power assembly 300 is located inside the tool magazine and can employ a ball screw linear module, thereby pushing the tool transfer structure 200 out of the magazine door 100 for tool changing. Therefore, the inlet / outlet power assembly 300 also provides power for the movement of the guide rail 400.

[0059] Example 3

[0060] This application also proposes a machine tool including the chain-type tool magazine as described above.

[0061] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A door opening and closing device for a tool magazine for being arranged on a tool transfer structure and a magazine door opening, characterized in that The door opening and closing device includes: a guide rail, which is arranged on the tool transmission structure, and a guide groove is arranged on the guide rail, and the guide groove has an inclined section and a horizontal section; A door body, one side edge of the door body is hinged on the tool magazine entrance, and a switching reference plane is formed on the hinge axis, wherein the switching reference plane is parallel to the inner surface of the door body and passes through the hinge axis; A sliding member, which is arranged on the side of the door body facing the tool magazine entrance and is movably embedded in the guide groove, and the sliding member deviates from the switching reference plane; The guide rail is driven by the movement of the tool transmission structure in the in-out direction, so that the sliding member moves within the inclined section and the horizontal section; When the sliding member moves from the inclined section to the horizontal section, the sliding member pushes the door body to rotate outward around the hinge to open the tool magazine entrance; When the sliding member moves from the horizontal section to the inclined section, the sliding member pushes the door body to rotate inward around the hinge to close the tool magazine entrance.

2. A door opening and closing device for a tool magazine according to claim 1, characterized in that The sliding member includes: a pulley seat, which is fixedly arranged on the inner surface of the door body; A guide roller, which is rotatably arranged on the pulley seat.

3. A door opening and closing device for a tool magazine according to claim 2, characterized in that A first acute angle a is formed between the inclined section and the horizontal section, a eccentric line is formed by the connection line between the hinge axis and the rotation center of the guide roller, and a deviation angle b is formed between the eccentric line and the switching reference plane, where 2.5b < a and a < 3b.

4. A door opening and closing device for a tool magazine according to claim 3, characterized in that When the door body closes the tool magazine entrance, the center line of the chute in the horizontal section is located between the hinge axis and the guide roller; The distance between the center line of the chute in the horizontal section and the hinge axis is a first distance L1, and the distance between the center line of the chute in the horizontal section and the axis of the guide roller is a second distance L2, where L1:L2 = 0.75 - 0.

9.

5. The door opening and closing device for a tool magazine according to claim 1, wherein The guide rail forms an upper side edge and a lower side edge through the guide groove, and the thickness of the upper side edge is less than that of the lower side edge.

6. The door opening and closing device for a tool magazine according to claim 1, characterized in that The guide rail is arranged on the tool transmission structure through a door pushing bracket; The door pushing bracket includes: a bottom plate, a support plate and a bearing plate, and the bottom plate, the support plate and the bearing plate are in a Z-shaped structure; A waist-shaped hole is formed on the bottom plate, and it is connected to the tool transmission structure by passing a screw through the waist-shaped hole; The guide rail is fixed on the bearing plate.

7. A door opening and closing device for a tool magazine according to claim 6, characterized in that A buffer block is arranged on the inner surface of the door body.

8. A chain tool magazine, characterized in that Includes: A tool magazine entrance, a tool transmission structure and a door opening and closing device for a tool magazine as described in any one of claims 1-7; The tool transmission structure enters and exits the tool magazine through the tool magazine entrance.

9. A chain tool magazine according to claim 8, characterized in that The tool transmission structure is connected with an in-out power component, and the tool transmission structure enters and exits the tool magazine entrance through the drive of the in-out power component.

10. A machine tool, characterized by Includes a chain-type tool magazine as described in claim 9.

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