Double exchange protection door system of gantry machine tool and gantry machine tool

Abstract

The invention provides a double-exchange position protective door system of a gantry machine tool and a gantry machine tool, and relates to the field of CNC machine tool manufacturing. The protective door system comprises: a support member, the support member is used to be arranged in the rear space of the gantry machine tool, a tool magazine and a swing head magazine are arranged side by side inside the support member, the support member is provided with an opening, a part of the opening forms a first magazine opening connected to the tool magazine, and the other part of the opening forms a second magazine opening connected to the swing head magazine; a tool magazine door body and a head magazine door body, the top and bottom of the tool magazine door body are respectively slidably connected to the top and bottom of the support member, the top and bottom of the head magazine door body are respectively slidably connected to the top and bottom of the support member, the tool magazine door body and the head magazine door body can overlap each other, or close the first magazine opening and the second magazine opening respectively; automatic replacement of tools and swing heads is realized when the tool magazine and the swing head magazine are placed side by side on the rear side of the machine tool, the idle space of the gantry machine tool is fully utilized, and the resource utilization rate is improved.

Description

Technical Field

[0001] The invention belongs to the field of numerical control machine tool manufacturing, and more specifically, relates to a double-exchange protection door system of a gantry machine tool and the gantry machine tool. Background Art

[0002] With the continuous development of science and technology, the requirements for automation level, production efficiency and reliability of modern manufacturing are becoming increasingly higher; efficient processing of complex parts integrating multiple materials and multiple process parameters is an important development direction of high-end equipment gantry five-axis machining center; in order to meet the needs of market applications, gantry five-axis machining centers are equipped with a variety of performance swing heads and a variety of tools, which has become a development trend; the structural characteristics of the gantry five-axis machining center determine that the rear side of the machine tool is often the best location for arranging the tool library and swing head library. On the one hand, the space here is often vacant, and on the other hand, if other locations are chosen, it will often cause major changes in the structure, affecting the performance of the entire machine tool and causing an increase in the cost of the machine tool; however, due to the limitations of height and machine span size, the existing protective door system of the gantry machine tool is difficult to meet the use requirements of the tool library and swing head library installed on the rear side of the machine tool, resulting in a lack of a space-saving automatic protective door system for realizing the automatic replacement of tools and swing heads when the tool library and swing head library are placed side by side on the rear side of the gantry machine tool. Summary of the invention

[0003] The purpose of the present invention is to provide a double exchange position protective door system and a gantry machine tool for a gantry machine tool in response to the deficiencies in the existing technology, so as to solve the problem that the existing protective door system proposed in the above background technology has a relatively large design space occupation, and due to the limitations of the height and span size of the gantry machine tool, the existing protective door system is difficult to meet the use requirements of installing the tool magazine and the swing head magazine on the rear side of the machine tool.

[0004] In order to achieve the above object, the present invention provides a double-exchange protective door system for a gantry machine tool, the protective door system comprising:

[0005] A support member, the support member is used to be arranged in the rear space of the gantry machine tool, a tool magazine and a swing head magazine are arranged side by side inside the support member, and the support member is provided with an opening, a part of the opening forms a first magazine opening connected to the tool magazine, and another part of the opening forms a second magazine opening connected to the swing head magazine;

[0006] A tool magazine door body and a head magazine door body, wherein the top and bottom of the tool magazine door body are respectively slidably connected to the top and bottom of the support, and the top and bottom of the head magazine door body are respectively slidably connected to the top and bottom of the support, and the tool magazine door body and the head magazine door body can overlap each other, or respectively close the first magazine opening and the second magazine opening;

[0007] Two transverse driving mechanisms, one of which has a driving portion connected to the tool magazine door body for driving the tool magazine door body to move in the opening, and the other of which has a driving portion connected to the head magazine door body for driving the head magazine door body to move in the opening.

[0008] Preferably, the double exchange protection system of the machine tool further comprises:

[0009] a first door-closed position detection switch and a first door-opened position detection switch, wherein the first door-closed position detection switch is arranged on a side of the first storage opening away from the second storage opening, and the first door-opened position detection switch is arranged on a side of the second storage opening away from the first storage opening, and the first door-closed position detection switch and the first door-opened position detection switch are used to detect the opening and closing of the tool magazine door body;

[0010] A second door-closing detection switch and a second door-opening detection switch, wherein the second door-closing detection switch is arranged on a side of the second warehouse opening away from the first warehouse opening, and the second door-opening detection switch is arranged on a side of the first warehouse opening away from the second warehouse opening, and the second door-closing detection switch and the second door-opening detection switch are used to detect the opening and closing of the door body of the head warehouse;

[0011] The first door closing position detection switch, the first door opening position detection switch, the second door closing position detection switch, the second door opening position detection switch and the two transverse drive mechanisms are all electrically connected to the control system of the gantry machine tool, and the control system controls the operation of the two transverse drive mechanisms according to the signals received from the first door closing position detection switch, the first door opening position detection switch, the second door closing position detection switch and the second door opening position detection switch.

[0012] Preferably, the double exchange protection door system of the gantry machine tool also includes two first guide rail assemblies, the two first guide rail assemblies are connected to the top of the support member, and the top of the tool magazine door body and the top of the head magazine door body are respectively connected to the moving parts of the two first guide rail assemblies.

[0013] Preferably, the double exchange protection door system of the gantry machine tool also includes two second guide rail assemblies, the two second guide rail assemblies are connected to the bottom of the support member, and the bottom of the tool magazine door body and the bottom of the head magazine door body are respectively connected to the moving parts of the two second guide rail assemblies.

[0014] Preferably, the lateral driving mechanism comprises:

[0015] A lateral drive member;

[0016] A connecting body, one end of which is connected to the slide of the transverse driving member, and the other end of which is the driving part of the transverse driving mechanism.

[0017] Preferably, the transverse driving member is a rodless cylinder.

[0018] Preferably, the first guide rail assembly comprises:

[0019] Linear guides;

[0020] At least four sliders are provided, and at least four of the sliders are slidably connected to the linear guide rail at intervals, and at least four of the sliders are moving parts of the first guide rail assembly.

[0021] Preferably, the second guide rail assembly comprises:

[0022] Round steel support rails;

[0023] At least six support wheels are connected to the round steel support rail in a rolling manner at intervals, and at least six support wheels are the moving parts of the second rail assembly.

[0024] Preferably, the first storage opening and the second storage opening are both L-shaped, and the tool storage door body and the head storage door body are both L-shaped.

[0025] A gantry machine tool, comprising:

[0026] Two support beams, the two support beams are arranged at an interval, and a processing area is between the two support beams;

[0027] The double-exchange protection door system of the gantry machine tool is arranged between the two support beams and in the rear space of the gantry machine tool.

[0028] The present invention provides a double-exchange position protective door system for a gantry machine tool and a gantry machine tool, and its beneficial effects are: one of the transverse driving mechanisms of the protective door system can drive the tool magazine door body to slide from a first magazine opening position to a second magazine opening position, and the other transverse driving mechanism can drive the head magazine door body to slide from the second magazine opening position to the first magazine opening position. When the gantry machine tool executes a tool changing instruction, the tool magazine door body and the head magazine door body can be overlapped at the second magazine opening position, and when the gantry machine tool executes a head changing instruction, the tool magazine door body and the head magazine door body can be overlapped at the first magazine opening position. In the case that the space on the rear side of the machine tool is limited, the problem that the tool magazine door body and the head magazine door body occupy a large space when opening and closing the door is avoided, and the automatic replacement of the tool and the swing head is realized when the tool magazine and the swing head magazine are placed side by side at the rear side of the machine tool, thereby making full use of the idle space of the gantry machine tool and improving the resource utilization rate. At the same time, the present invention promotes the optimization of the placement position of the tool magazine of the gantry machine tool, avoids the disadvantage that the traditional placement position weakens the rigidity under the bridge of the gantry machine tool, and promotes the improvement of the performance of the gantry machine tool.

[0029] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The above and other objects, features and advantages of the present invention will become more apparent through a more detailed description of exemplary embodiments of the present invention in conjunction with the accompanying drawings, wherein like reference numerals generally represent like components throughout the exemplary embodiments of the present invention.

[0031] Figure 1 A partial three-dimensional structural schematic diagram of a gantry machine tool according to an embodiment of the present invention is shown.

[0032] Figure 2 A schematic three-dimensional structure diagram of a double-exchange protection door system of a gantry machine tool according to an embodiment of the present invention is shown.

[0033] Figure 3 Shows Figure 2 Enlarged structural diagram at A in the middle.

[0034] Figure 4 A schematic diagram of the side view and cross-sectional structure of a double-exchange protection door system of a gantry machine tool according to an embodiment of the present invention is shown.

[0035] Figure 5 Shows Figure 4 Enlarged structural diagram at B in the middle.

[0036] Figure 6 Shows Figure 4 Enlarged structural diagram at point C in the middle.

[0037] Figure 7 A schematic diagram of the three-dimensional structure of a double-exchange protection door system of a gantry machine tool according to an embodiment of the present invention is shown in a top view with the swing head magazine opened.

[0038] Figure 8 Shows Figure 7 Enlarged structural diagram at point D in the middle.

[0039] Fig. 9 A schematic diagram of the three-dimensional structure of a double-exchange protection door system of a gantry machine tool according to an embodiment of the present invention is shown in a top view with the tool magazine opened.

[0040] Fig.10 A schematic diagram of the three-dimensional structure of a double-exchange protection door system of a gantry machine tool according to an embodiment of the present invention is shown in a top view with a tool magazine and a swing head magazine closed.

[0041] Fig.11 A flow chart of a double-exchange protective door system for a gantry machine tool according to an embodiment of the present invention is shown.

[0042] Description of reference numerals:

[0043] 1. Tool magazine door body; 2. Head magazine door body 3. Support member; 4. Tool magazine; 5. Swing head magazine; 6. Transverse drive mechanism; 61. Transverse drive member; 62. Connector; 63. Slide; 7. First guide rail assembly; 71. Linear guide rail; 72. Four slide blocks; 8. Second guide rail assembly; 81. Round steel support rail; 82. Support wheel; 9. First door closing detection switch; 10. First door opening detection switch; 11. Second door closing detection switch; 12. Second door opening detection switch; 13. Support beam; 14. Processing area; 15. First bracket; 16. Second bracket; 17. Third bracket. DETAILED DESCRIPTION

[0044] The preferred embodiments of the present invention will be described in more detail below. Although the preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0045] like Figure 2 , Figure 7 , Fig. 9 and Fig.10 As shown, the present invention provides a double-exchange protection door system for a gantry machine tool, the protection door system comprising:

[0046] The support member 3 is used to be arranged in the rear space of the gantry machine tool. The tool magazine 4 and the swing head magazine 5 are arranged side by side inside the support member 3. The support member 3 is provided with an opening, a part of the opening forms a first magazine opening connected to the tool magazine 4, and another part of the opening forms a second magazine opening connected to the swing head magazine 5;

[0047] The tool magazine door body 1 and the head magazine door body 2, the top and bottom of the tool magazine door body 1 are respectively slidably connected to the top and bottom of the support member 3, the top and bottom of the head magazine door body 2 are respectively slidably connected to the top and bottom of the support member 3, the tool magazine door body 1 and the head magazine door body 2 can overlap together, or close the first magazine opening and the second magazine opening respectively;

[0048] There are two transverse driving mechanisms 6, wherein the driving part of one transverse driving mechanism 6 is connected to the tool magazine door body 1 for driving the tool magazine door body 1 to move in the opening, and the driving part of the other transverse driving mechanism 6 is connected to the head magazine door body 2 for driving the head magazine door body 2 to move in the opening.

[0049] Specifically, in order to solve the problem that the existing protective door system has a relatively large design space occupation, and due to the height and span size limitations of the gantry machine tool, the existing protective door system is difficult to meet the use requirements of the tool magazine and the swing head magazine being installed on the rear side of the machine tool, the present invention provides a double-exchange protective door system for a gantry machine tool. When the tool magazine door body 1 and the head magazine door body 2 of the protective door system overlap, the tool magazine door body 1 is located on the inner side of the head magazine door body 2 in space. One of the transverse driving mechanisms 6 of the protective door system can drive the tool magazine door body 1 to slide from the first magazine opening position to the second magazine opening position, and the other transverse driving mechanism 6 can drive the head magazine door body 2 to slide from the second magazine opening position to the first magazine opening position. When the gantry machine tool When the tool change command is executed, the tool magazine door 1 and the head magazine door 2 can be overlapped at the second magazine opening position. When the gantry machine tool executes the head change command, the tool magazine door 1 and the head magazine door 2 can be overlapped at the first magazine opening position. When the space on the rear side of the machine tool is limited, the problem of the tool magazine door 1 and the head magazine door 2 occupying a large space when opening and closing the door is avoided, and the tool magazine 4 and the swing head magazine 5 are placed side by side at the rear side of the machine tool. Automatic replacement of tools and swing heads is realized, making full use of the idle space of the gantry machine tool and improving resource utilization. At the same time, the present invention promotes the optimization of the placement position of the tool magazine 4 of the gantry machine tool, avoids the disadvantage of the traditional placement position weakening the rigidity under the bridge of the gantry machine tool, and promotes the improvement of the performance of the gantry machine tool.

[0050] like Figure 3 and Figure 8 As shown, preferably, the double exchange protection system of the machine tool also includes:

[0051] A first door-closed position detection switch 9 and a first door-opened position detection switch 10, wherein the first door-closed position detection switch 9 is arranged on a side of the first storage opening away from the second storage opening, and the first door-opened position detection switch 9 is arranged on a side of the second storage opening away from the first storage opening, and the first door-closed position detection switch 9 and the first door-opened position detection switch 10 are used to detect the opening and closing of the tool magazine door body 1;

[0052] A second door-closing detection switch 11 and a second door-opening detection switch 12 are provided at a side of the second warehouse opening away from the first warehouse opening, and a second door-opening detection switch 12 is provided at a side of the first warehouse opening away from the second warehouse opening. The second door-closing detection switch 11 and the second door-opening detection switch 12 are used to detect the opening and closing of the head warehouse door body 2;

[0053] The first door closing position detection switch 9, the first door opening position detection switch 10, the second door closing position detection switch 11, the second door opening position detection switch 12 and the two transverse drive mechanisms 6 are all electrically connected to the control system of the gantry machine tool, and the control system controls the operation of the two transverse drive mechanisms 6 according to the signals received from the first door closing position detection switch 9, the first door opening position detection switch 10, the second door closing position detection switch 11 and the second door opening position detection switch 12.

[0054] Specifically, the first door-closing detection switch 9 is used to detect the arrival signal when the tool magazine door 1 is closed, the first door-opening detection switch 10 is used to detect the arrival signal when the tool magazine door 1 is opened, the second door-closing detection switch is used to detect the arrival signal when the head magazine door 2 is closed, and the second door-opening detection switch 12 is used to detect the arrival signal when the head magazine door 2 is closed and opened. The control system of the gantry machine tool can simultaneously collect signals from the four detection switches, and use this as a basis to determine whether the positions of the tool magazine door 1 and the head magazine door 2 are correct, whether there is a problem with the detection switch, and whether to execute the door opening and closing action. It can simultaneously meet the functional requirements of automatic tool changing in the tool magazine 4 and automatic head changing in the swing head magazine 5. Its creativity lies in utilizing the characteristics that the exchange actions of the tool magazine 4 and the swing head magazine 5 are not simultaneous in time, the tool is changed without changing the head, and the head is changed without changing the tool.

[0055] The first door-closed position detection switch 9 is connected to one of the second brackets 16, the second door-opened position detection switch 12 is connected to the other second bracket 16, the first door-opened position detection switch 10 and the second door-closed position detection switch 11 are connected to the third bracket 17, and the second bracket 16 and the third bracket 17 are both connected to the support member 3 by screws.

[0056] like Figure 4 As shown, preferably, the double exchange protection door system of the gantry machine tool also includes two first guide rail assemblies 7, the two first guide rail assemblies 7 are connected to the top of the support 3, and the top of the tool magazine door body 1 and the top of the head magazine door body 2 are respectively connected to the moving parts of the two first guide rail assemblies 7.

[0057] Preferably, the double exchange protection door system of the gantry machine tool also includes two second guide rail assemblies 8, the two second guide rail assemblies 8 are connected to the bottom of the support 3, and the bottom of the tool magazine door body 1 and the bottom of the head magazine door body 2 are respectively connected to the moving parts of the two second guide rail assemblies 8.

[0058] Specifically, the tool magazine door body 1 is supported and guided by one of the first guide rail assemblies 7 and one of the second guide rail assemblies 8, and is driven by one of the transverse drive mechanisms 6. The head magazine door body 2 is supported and guided by another first guide rail assembly 7 and another second guide rail assembly 8, and is driven by another transverse drive mechanism 6.

[0059] like Figure 6As shown, preferably, the lateral driving mechanism 6 comprises:

[0060] Transverse drive member 61;

[0061] The connecting body 62 has one end connected to the slide 63 of the transverse driving member 61 , and the other end of the connecting body 62 is the driving part of the transverse driving mechanism 6 .

[0062] Specifically, the connecting body 62 is connected to the slide 63 by screws, the connecting body 62 cooperating with the tool magazine door body 1 is connected to the tool magazine door body 1 by screws, and the connecting body 62 cooperating with the head magazine door body 2 is connected to the head magazine door body 2 by screws, thereby achieving the purpose of the slide 63 of the transverse driving member 61 dragging the door body to move.

[0063] Preferably, the transverse driving member 61 is a rodless cylinder.

[0064] Specifically, the application of rodless cylinders simplifies the protective door system, while ensuring the stability of the tool magazine door body 1 and the head magazine door body 2 in the long stroke state, avoiding the bending and weak stability of traditional rod cylinders during long stroke use, providing sufficient rigidity, and improving the service life of the protective door system. It reduces the user's subsequent maintenance and repair costs. At the same time, compared with rod cylinders, it greatly reduces the installation space, making the protective door system structure more compact.

[0065] like Figure 6 As shown, preferably, the first guide rail assembly 7 includes:

[0066] Linear guide 71;

[0067] At least four sliders 72 are connected to the linear guide rail 71 in a sliding manner at intervals, and the at least four sliders 72 are the moving parts of the first guide rail assembly 7 .

[0068] Specifically, the linear guide rail 71 is installed on the support 3 by screws, the slider 72 cooperating with the tool magazine door body 1 is installed on the tool magazine door body 1 by screws, and the slider 72 cooperating with the head magazine door body 2 is installed on the head magazine door body 2 by screws.

[0069] like Figure 5 As shown, preferably, the second guide rail assembly 8 includes:

[0070] Round steel support rail 81;

[0071] At least six support wheels 82 are connected to the round steel support rail 81 in a rolling manner at intervals, and the at least six support wheels 82 are the moving parts of the second rail assembly 8.

[0072] Specifically, the round steel support rail 81 is installed on the first bracket 15 and fixed by screws. The first bracket 15 is installed on the support member 3 and fixed by screws. The support wheel 82 that cooperates with the tool magazine door body 1 is installed on the tool magazine door body 1 by screws. The support wheel 82 that cooperates with the head magazine door body 2 is installed on the head magazine door body 2 by screws.

[0073] The combined use of the linear guide rail 71 and the round steel support guide rail 81 provides sufficient rigidity for the protective door system, ensuring the stability of the tool magazine door body 1 and the head magazine door body 2 during movement.

[0074] Preferably, the first storage opening and the second storage opening are both L-shaped, and the tool storage door body 1 and the head storage door body 2 are both L-shaped.

[0075] like Figure 1 As shown, a gantry machine tool comprises:

[0076] Two support beams 13, the two support beams 13 are arranged at an interval, and a processing area 14 is between the two support beams 13;

[0077] The double-exchange protection door system of the gantry machine tool is arranged between the two support beams 13 and in the rear space of the gantry machine tool.

[0078] In summary, when the double exchange protection door system of the gantry machine tool of the present invention is applied to the gantry machine tool, Fig.11 As shown, by collecting detection signals from four locations, a strict logic control process is designed to ensure the safety and reliability of the cascading automatic protective door system during use. The logic control process includes two parts: the tool magazine door body 1 control logic process and the head magazine door body 2 control process. These two parts of control have interlocking logic to ensure safety and reliability during operation.

[0079] When the gantry machine tool executes a tool changing command, it first determines whether the tool magazine door body 1 is in a closed state. When the signal of the first door closing position detection switch 9 of the tool magazine door body 1 is 1 and the signal of the first door opening position detection switch 10 is 0, the tool magazine door body 1 is in a closed state at this time, and the control system of the gantry machine tool controls the transverse drive member 61 to execute the door opening command action. If the two signals are the same, an alarm is issued; when the tool magazine door body 1 is in an open state, it is further determined whether the head magazine door body 2 is in a closed state, that is, when the signal of the second door closing position detection switch 11 of the head magazine door body 2 is 1 and the signal of the second door opening position detection switch 12 is 0, if the head magazine door body 2 is determined to be in a closed state, the gantry machine tool is allowed to open. The slide and swing head of the gantry machine tool run to the tool magazine to perform the tool changing action, otherwise the tool changing program is stopped, and the control system of the gantry machine tool alarms to remind the detection of the status of the head magazine door body 2, the detection switch status and the control system control logic; when the first door closing detection switch 9 signal of the tool magazine door body 1 is 0 and the first door opening detection switch 10 signal is 1, the tool magazine door body 1 is in the open state at this time, and it is further determined whether the head magazine door body 2 is in the closed state. If it is in the closed state, if the control system has no alarm, the tool changing program is executed. If the control system has an alarm, it is necessary to stop the tool changing program and alarm. If the head magazine door body 2 is in the open state, an alarm is issued and the tool change is stopped.

[0080] When the machine tool executes the head change command, it first determines whether the head warehouse door body 2 is in a closed state. When the signal of the second door closing detection switch 11 of the head warehouse door body 2 is 1 and the signal of the second door opening detection switch 12 is 0, the head warehouse door body 2 is in a closed state. The control system of the gantry machine tool controls the transverse drive member 61 to execute the door opening command action. If the two signals are the same, an alarm is issued; when the head warehouse door body 2 is in an open state, it is further determined whether the tool magazine door body 1 is in a closed state, that is, when the signal of the first door closing detection switch 9 of the tool magazine door body 1 is 1 and the signal of the first door opening detection switch 10 is 0, if the tool magazine door body 1 is determined to be in a closed state, The gantry machine tool's slide and swing head are allowed to run to the swing head magazine 5 to perform the head changing action, otherwise the gantry machine tool's control system alarms to remind the detection of the tool magazine door body 1 status, the detection switch status and the control system control logic; when the second door closing detection switch 11 signal of the head magazine door body 2 is 0 and the second door opening detection switch 12 signal is 1, the head magazine door body 2 is in the open state at this time, and it is further determined whether the tool magazine door body 1 is in the closed state. If it is in the closed state, if the control system has no alarm, the head changing program is executed. If the control system has an alarm, the head changing program needs to be stopped and an alarm is issued; if the tool magazine door body 1 is in the open state, an alarm is issued and the head changing is stopped.

[0081] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A double exchange protection door system for a gantry machine tool, characterized in that: The protective door system includes: A support member, the support member is used to be arranged in the rear space of the gantry machine tool, a tool magazine and a swing head magazine are arranged side by side inside the support member, and the support member is provided with an opening, a part of the opening forms a first magazine opening connected to the tool magazine, and another part of the opening forms a second magazine opening connected to the swing head magazine; A tool magazine door body and a head magazine door body, wherein the top and bottom of the tool magazine door body are respectively slidably connected to the top and bottom of the support, and the top and bottom of the head magazine door body are respectively slidably connected to the top and bottom of the support, and the tool magazine door body and the head magazine door body can overlap each other, or respectively close the first magazine opening and the second magazine opening; Two transverse drive mechanisms, wherein a drive portion of one of the transverse drive mechanisms is connected to the tool magazine door body for driving the tool magazine door body to move in the opening, and a drive portion of the other transverse drive mechanism is connected to the head magazine door body for driving the head magazine door body to move in the opening; Two first guide rail assemblies, the two first guide rail assemblies are connected to the top of the support member, and the top of the tool magazine door body and the top of the head magazine door body are respectively connected to the moving parts of the two first guide rail assemblies; Two second guide rail assemblies, the two second guide rail assemblies are connected to the bottom of the support member, and the bottom of the tool magazine door body and the bottom of the head magazine door body are respectively connected to the moving parts of the two second guide rail assemblies.

2. A double exchange protection door system for a gantry machine tool according to claim 1, characterized in that: The double exchange protection system of the machine tool also includes: a first door-closed position detection switch and a first door-opened position detection switch, wherein the first door-closed position detection switch is arranged on a side of the first storage opening away from the second storage opening, and the first door-opened position detection switch is arranged on a side of the second storage opening away from the first storage opening, and the first door-closed position detection switch and the first door-opened position detection switch are used to detect the opening and closing of the tool magazine door body; A second door-closing detection switch and a second door-opening detection switch, wherein the second door-closing detection switch is arranged on a side of the second warehouse opening away from the first warehouse opening, and the second door-opening detection switch is arranged on a side of the first warehouse opening away from the second warehouse opening, and the second door-closing detection switch and the second door-opening detection switch are used to detect the opening and closing of the door body of the head warehouse; The first door closing position detection switch, the first door opening position detection switch, the second door closing position detection switch, the second door opening position detection switch and the two transverse drive mechanisms are all electrically connected to the control system of the gantry machine tool, and the control system controls the operation of the two transverse drive mechanisms according to the signals received from the first door closing position detection switch, the first door opening position detection switch, the second door closing position detection switch and the second door opening position detection switch.

3. The double-exchange protective door system of a gantry machine tool according to claim 1, characterized in that: The lateral driving mechanism comprises: A transverse drive member; A connecting body, one end of which is connected to the slide of the transverse driving member, and the other end of which is the driving part of the transverse driving mechanism.

4. A double-exchange protective door system for a gantry machine tool according to claim 3, characterized in that: The transverse driving member is a rodless cylinder.

5. The double-exchange protective door system of a gantry machine tool according to claim 1, characterized in that: The first guide rail assembly comprises: Linear guides; At least four sliders are provided, and at least four of the sliders are slidably connected to the linear guide rail at intervals, and at least four of the sliders are moving parts of the first guide rail assembly.

6. A double-exchange protective door system for a gantry machine tool according to claim 2, characterized in that: The second guide rail assembly comprises: Round steel support rails; At least six support wheels are connected to the round steel support rail in a rolling manner at intervals, and at least six support wheels are the moving parts of the second rail assembly.

7. The double-exchange protective door system of a gantry machine tool according to claim 1, characterized in that: The first storage opening and the second storage opening are both L-shaped, and the tool storage door body and the head storage door body are both L-shaped.

8. A gantry machine tool, characterized in that: include: Two support beams, the two support beams are arranged at an interval, and a processing area is between the two support beams; A double-exchange protective door system for a gantry machine tool according to any one of claims 1 to 7 is arranged between the two support beams and in the rear space of the gantry machine tool.

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