Working table supporting rod gas transmission device

Abstract

The utility model relates to a workbench support rod gas transmission device which is mainly applied to a cutting machine, the cutting machine comprises a front machine base, a rear machine base, an upper workbench and a lower workbench, the front machine base is connected with the rear machine base, and the upper workbench and the lower workbench are respectively arranged on the front machine base and the rear machine base in a sliding mode. The working table supporting rod gas transmission device comprises a first feeding assembly, a second feeding assembly, an external gas transmission assembly, an upper working table gas transmission assembly and a lower working table gas transmission assembly, the first feeding assembly and the upper working table gas transmission assembly are arranged on the upper working table, and the upper working table gas transmission assembly is in ventilation connection with the first feeding assembly; the second feeding assembly and the lower workbench gas conveying assembly are arranged on the lower workbench, and the lower workbench gas conveying assembly is in ventilation connection with the second feeding assembly. The external air conveying assembly is arranged on the rear machine base, and when the upper workbench or the lower workbench enters the rear machine base, the upper workbench air conveying assembly or the lower workbench air conveying assembly is connected with the external air conveying assembly in an aligned mode.

Description

TECHNICAL FIELD

[0001] The utility model relates to cutting machine technical field especially a workbench support rod gas conveying device. BACKGROUND

[0002] The high-low exchangeable table laser cutting machine is a cutting machine with two worktables, and the worktable is divided into two layers, such as Chinese patent number: CN212122123U, a double-layer exchangeable worktable applied to a laser cutting machine, the patent sets the upper worktable and the lower worktable on the bed body, and the upper worktable is located above the lower worktable; the first transmission mechanism and the second transmission mechanism are respectively arranged on the two sides of the bed body, and the first transmission mechanism is connected with the upper worktable, the first transmission mechanism drives the upper worktable to move along the length direction of the bed body, the second transmission mechanism is connected with the lower worktable, and the second transmission mechanism drives the lower worktable to move along the length direction of the bed body, so that the upper worktable and the lower worktable can alternately enter or leave the bed body.

[0003] In the prior art, the upper and lower worktables are moved to the front machine stand for cutting after being loaded on the rear machine stand, so each of the upper and lower worktables is provided with a support rod for loading operation, the support rod is driven by a cylinder to rise or descend, and the cylinder needs to be connected with an external gas source to work, in the prior art, the cylinder needs to be manually connected with the external gas source, so the labor cost is increased and the production efficiency is reduced. UTILITY MODEL CONTENTS

[0004] To solve the above problems, the utility model provides a workbench support rod gas conveying device.

[0005] In order to achieve the above object, the utility model discloses the following technical scheme: the utility model relates to a workbench support rod gas conveying device, the workbench support rod gas conveying device is applied to cutting machine, the cutting machine includes front bed, rear bed, upper workbench and lower workbench, the front bed is connected with the rear bed, the upper workbench, lower workbench are slidably arranged on the front bed and rear bed respectively, the upper workbench is located the upper side of lower workbench, and it is characterized in that: the workbench support rod gas conveying device includes a plurality of first feeding assemblies, a plurality of second feeding assemblies, external gas conveying components, upper workbench gas conveying components and lower workbench gas conveying components, the first feeding assembly, upper workbench gas conveying components are arranged on the upper workbench, and upper workbench gas conveying components are connected with the first feeding assembly and ventilate, the second feeding assembly, lower workbench gas conveying components are arranged on the lower workbench, and lower workbench gas conveying components are connected with the second feeding assembly and ventilate, the external gas conveying components are arranged on the rear bed, when the upper workbench or lower workbench enters the rear bed, the upper workbench gas conveying components or lower workbench gas conveying components will be connected with the external gas conveying components and align.

[0006] Preferably, the first feeding assembly includes a pair of first cylinders and a first support rod, the first cylinders are respectively arranged on both sides of the upper workbench, the first support rod is respectively connected with the output end of the first cylinder on both sides, the upper workbench gas conveying components are installed on the upper workbench, and the upper workbench gas conveying components are connected with the first cylinder and ventilate.

[0007] Preferably, the second feeding assembly includes a pair of second cylinders and a second support rod, the second cylinders are respectively arranged on both sides of the lower workbench, the second support rod is respectively connected with the output end of the second cylinder on both sides, the lower workbench gas conveying components are installed on the lower workbench, and the lower workbench gas conveying components are connected with the second cylinder and ventilate.

[0008] Preferably, the external gas conveying components include a first gas conveying mounting bottom plate, a second gas conveying mounting bottom plate, a third gas conveying mounting bottom plate, a pair of first connecting plates, a pair of second connecting plates, a gas conveying plate, an upper gas conveying part and a lower gas conveying part, wherein the third gas conveying mounting bottom plate is fixed on the rear bed, the first connecting plate is respectively installed on both sides of the third gas conveying mounting bottom plate, the first gas conveying mounting bottom plate is installed on the other side of the first connecting plate, the second gas conveying mounting bottom plate is installed on the first gas conveying mounting bottom plate in cooperation with the second connecting plate, the gas conveying plate is installed on the second gas conveying mounting plate, the gas conveying plate is provided with an upper gas conveying mounting hole and a lower gas conveying mounting hole, the upper gas conveying part is installed in the upper gas conveying mounting hole, and the lower gas conveying part is installed in the lower gas conveying mounting hole.

[0009] Preferably, the upper gas feeding member comprises a first clamping ring, a first guide copper sleeve, a first gas feeding guide shaft and a gas spring, the first guide copper sleeve is matched with the first clamping ring through the upper gas feeding installation hole, the first gas feeding guide shaft is arranged in the first guide copper sleeve, and the gas spring is sleeved on the first gas feeding guide shaft.

[0010] Preferably, the first gas feeding guide shaft comprises an upper gas pipe interface and an upper gas pipe outlet in communication with the upper gas pipe interface, the upper gas pipe interface is connected with an external gas source, and the upper gas pipe outlet is in communication with the upper workbench gas feeding assembly.

[0011] Preferably, the lower gas feeding member comprises a second clamping ring, a second guide copper sleeve, a second gas feeding guide shaft and a gas spring, the second guide copper sleeve is matched with the second clamping ring through the lower gas feeding installation hole, the second gas feeding guide shaft is arranged in the second guide copper sleeve, and the gas spring is sleeved on the second gas feeding guide shaft.

[0012] Preferably, the second gas feeding guide shaft comprises a lower gas pipe interface and a lower gas pipe outlet in communication with the lower gas pipe interface, the lower gas pipe interface is connected with an external gas source, and the lower gas pipe outlet is in communication with the lower workbench gas feeding assembly.

[0013] Preferably, the upper workbench gas feeding assembly comprises a first upper gas connection installation plate, a second upper gas connection installation plate, a pair of upper gas plate fixing members, a pair of upper gas plates and a plurality of upper gas springs, the second upper gas connection installation plate is installed on the first upper gas connection installation plate, the second upper gas connection installation plate is provided with an upper gas plate installation groove, the upper gas plate is arranged in the upper gas plate installation groove, the upper gas spring is installed between the second upper gas connection installation plate and the upper gas plate installation groove, and the upper gas plate fixing members are respectively fixed on both sides of the upper gas plate.

[0014] Preferably, the lower worktable air supply assembly includes a first lower air receiving mounting plate, a second lower air receiving mounting plate, a pair of lower air receiving plate fixing members, a pair of lower air receiving plates, and a plurality of lower air receiving springs. The second lower air receiving mounting plate is mounted on the first lower air receiving mounting plate. The second lower air receiving mounting plate is provided with a lower air receiving plate mounting groove. The lower air receiving plate is disposed in the lower air receiving plate mounting groove. The lower air receiving springs are installed between the second lower air receiving mounting plate and the lower air receiving plate mounting groove. The lower air receiving plate fixing members are respectively fixed on both sides of the lower air receiving plate. The lower air receiving plate is provided with a lower air inlet and a lower air outlet. The lower air inlet and the lower air outlet are connected. The lower air outlet is ventilatedly connected to the second feeding assembly. When the lower worktable air supply assembly is connected to an external air supply assembly, the lower air inlet is connected to the lower air supply component.

[0015] The beneficial effects of this utility model are as follows: This utility model relates to a workbench support rod air supply device. In this utility model, when the upper workbench enters or leaves the rear base, the upper workbench air supply component will connect or separate from the upper air supply component; when the lower workbench enters or leaves the rear base, the lower workbench air supply component will connect or separate from the lower air supply component. The first cylinder or the second cylinder will automatically connect or disconnect from the external air source without manual connection or disconnection, which facilitates subsequent loading and unloading operations and effectively improves work efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the cutting machine of this utility model.

[0017] Figure 2 This is a utility model Figure 1 Enlarged view of the lower worktable air supply assembly after it is connected to the external air supply assembly.

[0018] Figure 3 This is a schematic diagram of the overall structure of the external gas delivery component of this utility model.

[0019] Figure 4 This is a schematic diagram showing the disassembled structure of the external gas delivery component of this utility model.

[0020] Figure 5 This is a schematic diagram of the installation structure of the upper gas conveying component, the lower gas conveying component, and the gas conveying plate of this utility model.

[0021] Figure 6 This is a schematic diagram of the external gas delivery component of this utility model from another angle.

[0022] Figure 7 This is a schematic diagram of the overall structure of the upper workbench of this utility model.

[0023] Figure 8 This is a utility model Figure 7 Enlarged view of point B in the image.

[0024] Figure 9 is the overall structure schematic diagram of the upper workbench gas conveying assembly of the utility model. Figure 7

[0025] Figure 10 is the overall structure schematic diagram of the upper workbench gas conveying assembly of the utility model.

[0026] Figure 11 is the split structure schematic diagram of the lower workbench gas conveying assembly of the utility model.

[0027] Figure 12 is the overall structure schematic diagram of the lower workbench of the utility model.

[0028] Figure 13 is the enlarged view of D in the utility model. Figure 12

[0029] Figure 14 is the enlarged view of E in the utility model. Figure 12

[0030] Figure 15 is the overall structure schematic diagram of the lower workbench gas conveying assembly of the utility model.

[0031] Figure 16 is the split structure schematic diagram of the lower workbench gas conveying assembly of the utility model.

[0032] Reference signs

[0033] 1. front machine seat; 2. rear machine seat; 3. upper workbench; 4. lower workbench;

[0034] 5. first upper material feeding assembly; 51. first air cylinder; 52. first supporting rod;

[0035] 6. second upper material feeding assembly; 61. second air cylinder; 62. second supporting rod;

[0036] 7. external gas conveying assembly; 71. first gas conveying installation bottom plate; 72. second gas conveying installation bottom plate; 73. third gas conveying installation bottom plate; 74. first connecting plate; 75. second connecting plate;

[0037] 76. gas conveying plate; 761. upper gas conveying installation hole; 762. lower gas conveying installation hole;

[0038] 77. upper gas conveying piece; 771. first clamping ring; 772. first guide copper sleeve; 773. first air inlet guide shaft; 7731. upper gas pipe interface; 7732. upper gas pipe outlet;

[0039] ​​​78. lower air outlet; 781. second upper air gripping ring; 782. second air guide copper sleeve; 783. second air inlet guide shaft; 7831. lower air pipe interface; 7832. lower air pipe outlet;

[0040] 79. air spring;

[0041] 8. upper workbench air feeding assembly; 81. first upper air feeding mounting plate; 82. second upper air feeding mounting plate; 821. upper air feeding plate mounting groove; 83. upper air feeding plate fixing piece; 84. upper air feeding plate; 841. upper air inlet; 842. upper air outlet; 85. upper air feeding spring;

[0042] 9. lower workbench air feeding assembly; 91. first lower air feeding mounting plate; 92. second lower air feeding mounting plate; 921. lower air feeding plate mounting groove; 93. lower air feeding plate fixing piece; 94. lower air feeding plate; 941. lower air inlet; 942. lower air outlet; 95. lower air feeding spring. DETAILED DESCRIPTION

[0043] Referring to Figures 1-16 The utility model relates to a workbench supporting rod air feeding device which is applied to a cutting machine, the cutting machine comprises a front base 1, a rear base 2, an upper workbench 3 and a lower workbench 4, the front base 1 is connected with the rear base 2, the front base 1 is a cutting work area of the cutting machine, the rear base 2 is a feeding work area of the cutting machine, the upper workbench 3 and the lower workbench 4 are respectively slidably arranged on the front base 1 and the rear base 2, and the upper workbench 3 is located above the lower workbench 4.

[0044] The workbench supporting rod air feeding device comprises a plurality of first feeding assemblies 5, a plurality of second feeding assemblies 6, an external air feeding assembly 7, an upper workbench air feeding assembly 8 and a lower workbench air feeding assembly 9. The first feeding assemblies 5 and the upper workbench air feeding assembly 8 are arranged on the upper workbench 3, and the upper workbench air feeding assembly 8 is in air connection with the first feeding assemblies 5; the second feeding assemblies 6 and the lower workbench air feeding assembly 9 are arranged on the lower workbench 4, and the lower workbench air feeding assembly 9 is in air connection with the second feeding assemblies 6; the external air feeding assembly 7 is arranged on the rear base 2, and when the upper workbench 3 or the lower workbench 4 enters the rear base 2, the upper workbench air feeding assembly 8 or the lower workbench air feeding assembly 9 is connected with the external air feeding assembly 7 in alignment.

[0045] As Figure 2 shown, Figure 2When the upper workbench 3 enters the front machine base 1 to perform the cutting operation, the lower workbench 4 is located on the rear machine base 2, at this time, the lower workbench gas conveying assembly 9 is connected with the external gas conveying assembly 7 in alignment, the external gas conveying assembly 7 can introduce the external gas source, so that the external gas source enters the second feeding assembly 6 from the lower workbench gas conveying assembly 9 to drive the second feeding assembly 6 to perform the feeding work.

[0046] Further, the cutting machine is provided with an upper guide rail and a lower guide rail (not marked in the figure), the upper guide rail and the lower guide rail are respectively and continuously arranged on the front machine base 1 and the rear machine base 2, and the upper guide rail is arranged above the lower guide rail. The upper workbench 3 is slidably installed on the upper guide rail, so that the upper workbench 3 can slide back and forth on the front machine base 1 and the rear machine base 2. The lower workbench 4 is slidably installed on the lower guide rail, so that the lower workbench 4 can slide back and forth on the front machine base 1 and the rear machine base 2.

[0047] In this embodiment, the first feeding assembly 5 includes a pair of first air cylinders 51 and a first supporting rod 52, the first air cylinders 51 are respectively arranged on both sides of the upper workbench 3, the two ends of the first supporting rod 52 are respectively connected with the output ends of the two first air cylinders 51, the upper workbench gas conveying assembly 8 is installed on the upper workbench 3, and the upper workbench gas conveying assembly 8 is in air connection with the first air cylinders 51.

[0048] In this embodiment, the second feeding assembly 6 includes a pair of second air cylinders 61 and a second supporting rod 62, the second air cylinders 61 are respectively arranged on both sides of the lower workbench 4, the two ends of the second supporting rod 62 are respectively connected with the output ends of the two second air cylinders 61, the lower workbench gas conveying assembly 9 is installed on the lower workbench 4, and the lower workbench gas conveying assembly 9 is in air connection with the second air cylinders 61.

[0049] In this embodiment, the external gas conveying assembly 7 includes a first gas conveying installation bottom plate 71, a second gas conveying installation bottom plate 72, a third gas conveying installation bottom plate 73, a pair of first connecting plates 74, a pair of second connecting plates 75, a gas conveying plate 76, an upper gas conveying part 77 and a lower gas conveying part 78. Among them, the third gas conveying installation bottom plate 73 is fixed on the rear machine base 2, the first connecting plates 74 are respectively installed on both sides of the third gas conveying installation bottom plate 73, the first gas conveying installation bottom plate 71 is installed on the other side of the first connecting plate 74, the second gas conveying installation bottom plate 72 is installed on the first gas conveying installation bottom plate 71 in cooperation with the second connecting plate 75, the second connecting plate 75 is located above the first connecting plate 74, the gas conveying plate 76 is installed on the second gas conveying installation plate, the gas conveying plate 76 is provided with an upper gas conveying installation hole 761 and a lower gas conveying installation hole 762 for installing the upper gas conveying part 77 and the lower gas conveying part 78, and the upper gas conveying installation hole 761 is located above the lower gas conveying installation hole 762.

[0050] Further, the upper gas conveying part 77 is installed in the upper gas conveying installation hole 761, and when the upper workbench 3 enters the rear chassis 2, the upper gas conveying part 77 is connected with the upper workbench gas conveying assembly 8. The upper gas conveying part 77 comprises a first embracing ring 771, a first guide copper sleeve 772 and a first air inlet guide shaft 773. The first guide copper sleeve 772 penetrates the upper gas conveying installation hole 761 and cooperates with the first embracing ring 771. The first air inlet guide shaft 773 is arranged in the first guide copper sleeve 772. The first air inlet guide shaft 773 comprises an upper gas pipe interface 7731 and an upper gas pipe outlet 7732 which is in communication with the upper gas pipe interface 7731. The upper gas pipe interface 7731 is used to connect an external gas source. The upper gas pipe outlet 7732 is used to be connected with the upper workbench gas conveying assembly 8.

[0051] Further, the lower gas conveying part 78 is installed in the lower gas conveying installation hole 762, and when the lower workbench 4 enters the rear chassis 2, the lower gas conveying part 78 is connected with the lower workbench gas conveying assembly 9. The lower gas conveying part 78 comprises a second embracing ring 781, a second guide copper sleeve 782 and a second air inlet guide shaft 783. The second guide copper sleeve 782 penetrates the lower gas conveying installation hole 762 and cooperates with the second embracing ring 781. The second air inlet guide shaft 783 is arranged in the second guide copper sleeve 782. The second air inlet guide shaft 783 comprises a lower gas pipe interface 7831 and a lower gas pipe outlet 7832 which is in communication with the lower gas pipe interface 7831. The lower gas pipe interface 7831 is used to connect an external gas source. The lower gas pipe outlet 7832 is used to be connected with the lower workbench gas conveying assembly 9.

[0052] The first air inlet guide shaft 773 and the second air inlet guide shaft 783 are respectively sleeved with gas conveying springs 79. When the upper workbench gas conveying assembly 8 and the lower workbench gas conveying assembly 9 are connected with the upper gas conveying part 77 and the lower gas conveying part 78, the gas conveying springs 79 can play a buffering role.

[0053] In the embodiment, the upper workbench gas conveying assembly 8 is installed on the upper workbench 3, and the upper workbench gas conveying assembly 8 comprises a first upper gas connection mounting plate 81, a second upper gas connection mounting plate 82, a pair of upper gas connection plate fixing members 83 and a pair of upper gas connection plates 84. The second upper gas connection mounting plate 82 is installed on the first upper gas connection mounting plate 81, and the second upper gas connection mounting plate 82 is provided with an upper gas connection plate mounting groove 821, the upper gas connection plate 84 is arranged in the upper gas connection plate mounting groove 821, and the upper gas connection plate fixing members 83 are respectively fixed on both sides of the upper gas connection plate 84, so that the upper gas connection plate 84 is fixed in the upper gas connection plate mounting groove 821. The upper gas connection plate 84 is provided with an upper gas inlet 841 and an upper gas outlet 842, the upper gas inlet 841 is in communication with the upper gas outlet 842, and the upper gas outlet 842 is in air connection with the first gas cylinder 51. When the upper workbench gas conveying assembly 8 is connected with the external gas conveying assembly 7, the upper gas inlet 841 is in butt joint communication with the upper gas pipe outlet 7732.

[0054] Further, a plurality of upper gas connection springs 85 are arranged between the bottom of the upper gas connection plate 84 and the upper gas connection plate mounting groove 821, and the upper gas connection springs 85 can play a buffering role when the upper workbench gas conveying assembly 8 is connected with the external gas conveying assembly 7.

[0055] In the embodiment, when the upper workbench 3 enters the rear seat 2, the upper workbench gas conveying assembly 8 is in butt joint communication with the upper gas conveying member 77, the external gas source enters the upper workbench gas conveying assembly 8 through the upper gas conveying member 77 by manually pressing the support rod lifting switch, the external gas source enters the first gas cylinder 51 from the upper workbench gas conveying assembly 8, drives the first gas cylinder 51 to make the first support rod 52 rise, and then the feeding and discharging operation is performed, after the feeding and discharging operation is completed, the first support rod 52 is lowered and reset by manually pressing the support rod lowering switch, and then the equipment operation switch is pressed, so that the upper workbench 3 runs to the front seat 1 to perform the cutting operation, and at the same time, the lower workbench 4 retreats to the rear seat 2.

[0056] In the embodiment, the lower workbench gas conveying assembly 9 is installed on the lower workbench 4, and the lower workbench gas conveying assembly 9 comprises a first lower gas connecting plate 91, a second lower gas connecting plate 92, a pair of lower gas plate fixing members 93 and a pair of lower gas plates 94. The second lower gas connecting plate 92 is installed on the first lower gas connecting plate 91, the second lower gas connecting plate 92 is provided with a lower gas plate mounting groove 921, the lower gas plate 94 is arranged in the lower gas plate mounting groove 921, and the lower gas plate fixing members 93 are respectively fixed on both sides of the lower gas plate 94 so that the lower gas plate 94 is fixed in the lower gas plate mounting groove 921. The lower gas plate 94 is provided with a lower gas inlet 941 and a lower gas outlet 942, the lower gas inlet 941 is in communication with the lower gas outlet 942, the lower gas outlet 942 is in air communication connection with the second cylinder 61, and the lower gas inlet 941 is in butt joint communication with the lower gas pipe outlet 7832 when the lower workbench gas conveying assembly 9 is connected with the external gas conveying assembly 7.

[0057] Further, a plurality of lower gas springs 95 are arranged between the bottom of the lower gas plate 94 and the lower gas plate mounting groove 921, and the lower gas springs 95 can play a buffering role when the lower workbench gas conveying assembly 9 is connected with the external gas conveying assembly 7.

[0058] In the utility model, when the lower workbench 4 enters the rear seat 2, the lower workbench gas conveying assembly 9 is in butt joint communication with the lower gas conveying member 78, the external gas source enters the lower workbench gas conveying assembly 9 through the lower gas conveying member 78 by manually pressing the support rod lifting switch, the external gas source enters the second cylinder 61 from the lower workbench gas conveying assembly 9, drives the second cylinder 61 to make the second support rod 62 lift, then the feeding and discharging operation is carried out, after the feeding and discharging operation is completed, the second support rod 62 is lowered and reset by manually pressing the support rod lowering switch, and then the equipment operation switch is pressed, so that the lower workbench 4 runs to the front seat 1 to carry out the cutting operation, and at the same time, the upper workbench 3 retreats to the rear seat 2.

[0059] The utility model relates to a kind of workbench support rod gas conveying devices, and in the utility model, when the upper workbench 3 enters or leaves rear seat 2, the upper workbench gas conveying assembly 8 will be in butt joint communication or separation with upper gas conveying member 77;When the lower workbench 4 enters or leaves rear seat 2, the lower workbench gas conveying assembly 9 will be in butt joint communication or separation with lower gas conveying member 78, first cylinder 51 or second cylinder 61 will be realized with external gas source connection or disconnection, without manual connection or disconnection, facilitate subsequent feeding and discharging operation, effectively improve work efficiency.

[0060] The above embodiments only describe the preferred embodiments of the utility model, and do not limit the scope of the utility model, and various deformations and improvements of the technical scheme of the utility model made by the ordinary engineering technicians in the art without departing from the design spirit of the utility model shall fall within the protection scope determined by the claims of the utility model.

Claims

1. A worktable support rod gas conveying device applied to a cutting machine, the cutting machine comprising a front machine base, a rear machine base, an upper worktable and a lower worktable, the front machine base being connected with the rear machine base, the upper worktable and the lower worktable being respectively slidably arranged on the front machine base and the rear machine base, the upper worktable being located above the lower worktable, characterized in that: The workbench support rod gas conveying device comprises a plurality of first feeding assemblies, a plurality of second feeding assemblies, an external gas conveying assembly, an upper workbench gas conveying assembly and a lower workbench gas conveying assembly.

2. A workbench brace gas delivery device according to claim 1, wherein: The first feeding assembly comprises a pair of first cylinders and a first support rod, the first cylinders are respectively arranged on both sides of the upper workbench, the two ends of the first support rod are respectively connected with the output ends of the first cylinders on both sides, the upper workbench gas conveying assembly is installed on the upper workbench, and the upper workbench gas conveying assembly is in air connection with the first cylinders.

3. A workbench brace gas delivery device according to claim 1, wherein: The second feeding assembly comprises a pair of second cylinders and a second support rod, the second cylinders are respectively arranged on both sides of the lower workbench, the two ends of the second support rod are respectively connected with the output ends of the second cylinders on both sides, the lower workbench gas conveying assembly is installed on the lower workbench, and the lower workbench gas conveying assembly is in air connection with the second cylinders.

4. A workbench brace gas delivery device according to claim 1, wherein: The external gas conveying assembly comprises a first gas conveying mounting bottom plate, a second gas conveying mounting bottom plate, a third gas conveying mounting bottom plate, a pair of first connecting plates, a pair of second connecting plates, a gas conveying plate, an upper gas conveying piece and a lower gas conveying piece, wherein the third gas conveying mounting bottom plate is fixed on the rear machine seat, the first connecting plates are respectively installed on both sides of the third gas conveying mounting bottom plate, the first gas conveying mounting bottom plate is installed on the other side of the first connecting plate, the second gas conveying mounting bottom plate is installed on the first gas conveying mounting bottom plate in cooperation with the second connecting plate, the gas conveying plate is installed on the second gas conveying mounting plate, the gas conveying plate is provided with an upper gas conveying mounting hole and a lower gas conveying mounting hole for installing the upper gas conveying piece and the lower gas conveying piece, the upper gas conveying piece is installed in the upper gas conveying mounting hole, and the lower gas conveying piece is installed in the lower gas conveying mounting hole.

5. A bench prop gas delivery device according to claim 4 wherein: The upper gas conveying piece comprises a first clamping ring, a first guide copper sleeve, a first air inlet guide shaft and an air spring, the first guide copper sleeve passes through the upper gas conveying mounting hole and cooperates with the first clamping ring, the first air inlet guide shaft is arranged in the first guide copper sleeve, and the air spring is sleeved on the first air inlet guide shaft.

6. A bench prop gas delivery device according to claim 5 wherein: The first air inlet guide shaft comprises an upper air pipe interface and an upper air pipe outlet in communication with the upper air pipe interface, the upper air pipe interface is connected with an external gas source, and the upper air pipe outlet is in butt joint communication with the upper workbench gas conveying assembly.

7. A workbench brace gas delivery device according to claim 4, wherein: The lower gas conveying piece comprises a second clamping ring, a second guide copper sleeve, a second air inlet guide shaft and an air spring, the second guide copper sleeve passes through the lower gas conveying mounting hole and cooperates with the second clamping ring, the second air inlet guide shaft is arranged in the second guide copper sleeve, and the air spring is sleeved on the second air inlet guide shaft.

8. A workbench brace gas delivery device according to claim 7, wherein: The second air inlet guide shaft comprises a lower air pipe interface and a lower air pipe outlet in communication with the lower air pipe interface, the lower air pipe interface is connected with an external air source, and the lower air pipe outlet is in communication with the lower workbench air conveying assembly.

9. A workbench brace gas delivery device according to claim 4, wherein: The upper workbench air conveying assembly comprises a first upper air connection mounting plate, a second upper air connection mounting plate, a pair of upper air connection plate fixing members, a pair of upper air connection plates and a plurality of upper air connection springs, the second upper air connection mounting plate is mounted on the first upper air connection mounting plate, the second upper air connection mounting plate is provided with an upper air connection plate mounting groove, the upper air connection plate is arranged in the upper air connection plate mounting groove, the upper air connection springs are mounted between the second upper air connection mounting plate and the upper air connection plate mounting groove, and the upper air connection plate fixing members are respectively fixed on both sides of the upper air connection plate.

10. A workbench brace gas delivery device according to claim 4, wherein: The lower workbench air conveying assembly comprises a first lower air connection mounting plate, a second lower air connection mounting plate, a pair of lower air connection plate fixing members, a pair of lower air connection plates and a plurality of lower air connection springs, the second lower air connection mounting plate is mounted on the first lower air connection mounting plate, the second lower air connection mounting plate is provided with a lower air connection plate mounting groove, the lower air connection plate is arranged in the lower air connection plate mounting groove, the lower air connection springs are mounted between the second lower air connection mounting plate and the lower air connection plate mounting groove, and the lower air connection plate fixing members are respectively fixed on both sides of the lower air connection plate. The lower workbench air conveying assembly comprises a first lower air connection mounting plate, a second lower air connection mounting plate, a pair of lower air connection plate fixing members, a pair of lower air connection plates and a plurality of lower air connection springs, the second lower air connection mounting plate is mounted on the first lower air connection mounting plate, the second lower air connection mounting plate is provided with a lower air connection plate mounting groove, the lower air connection plate is arranged in the lower air connection plate mounting groove, the lower air connection springs are mounted between the second lower air connection mounting plate and the lower air connection plate mounting groove, and the lower air connection plate fixing members are respectively fixed on both sides of the lower air connection plate.

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