A kind of gas chromatograph pump head microporous forming device

Abstract

The present application relates to gas chromatograph matching pump head, more particularly to the technical field of pump head micro-pore forming, and discloses a gas chromatograph pump head micro-pore forming device, which comprises a tool base plate and a gas chromatograph pump head, a tool part is installed on the tool base plate, a driving part one and a driving part two are installed on the tool part, a drilling part is arranged on the driving part one, a deburring part is arranged on the driving part two, a cross beam is arranged between the drilling part and the driving part two, and through the linkage cooperation of a hydraulic rod, a push disc, a contact ring and two groups of button switches, the motor one and the motor two are switched to automatically start and stop in time, so that the machining process is realized, which is different from the operation mode of the prior art that needs manual switching of drilling and deburring equipment, the secondary disassembly step of the workpiece is saved, the micro-pore forming complete machining can be completed by single clamping of the gas chromatograph pump head, the positioning deviation problem caused by secondary clamping is avoided, and the precise micro-pore machining operation process is simplified.

Description

Technical Field

[0001] This invention relates to pump heads for gas chromatographs, and more specifically to the field of pump head micropore forming technology, specifically a gas chromatograph pump head micropore forming device. Background Technology

[0002] The pump head for a gas chromatograph is a core component for controlling gas flow in gas pretreatment equipment. The micropores on the component body are the only channels for gas flow. The forming quality of the micropores directly determines the stability of the gas delivery by the pump body. At present, in industrial production, the micropores of this type of pump head are mostly processed in steps using a general-purpose bench drill with independent deburring fixtures. This type of general-purpose drilling equipment can be adapted to conventional drilling operations on various metal workpieces. The equipment structure only includes a basic feed mechanism, a rotary tool and a simple clamping table.

[0003] In actual processing, the operator needs to first fix the gas chromatograph pump head to be processed on the drilling machine fixture to complete the micro-hole drilling. After the drilling process is completed, the workpiece is removed from the drilling machine fixture and then transferred to a separate deburring fixture for re-clamping. The metal debris generated inside the micro-hole is manually cleaned by an external air gun. The entire processing process is completed by manually switching equipment and disassembling and assembling workpieces. The sliding feed component of the general-purpose drilling machine moves only by the clearance of the guide rail itself.

[0004] Existing general-purpose drilling equipment used in the micro-pore forming of gas chromatograph pump heads requires two clamping operations on the workpiece. During these two clamping operations, the workpiece clamping position is prone to shift, resulting in inconsistent micro-pore shape regularity. The sliding feed component is also susceptible to uncontrolled axial slippage during processing, altering the micro-pore size. Mechanical impact from the slide retraction also disrupts the workpiece clamping state. The separate deburring process cannot be integrated with the drilling process, and residual metal debris inside the micropores can only be removed by an external spray gun, which may leave residue on the micro-pore walls if not thoroughly cleaned. Therefore, this paper proposes a gas chromatograph pump head micro-pore forming device to address these problems. Summary of the Invention

[0005] (a) Technical problems to be solved To address the shortcomings of existing technologies, this invention provides a micropore forming device for gas chromatograph pump heads, which solves the problems of existing general-purpose drilling equipment requiring secondary disassembly and assembly of workpieces when processing micropores in gas chromatograph pump heads, easy slippage of the feed slider without buffer, incomplete cleaning of micropore debris, difficulty in keeping the two machining tools coaxial, and lack of automatic process switching linkage structure.

[0006] (II) Technical Solution To achieve the above objectives, the present invention provides the following technical solution: a micropore forming device for a gas chromatograph pump head, comprising a tooling base plate and a gas chromatograph pump head. A tooling part is mounted on the tooling base plate, and a drive part I and a drive part II are mounted on the tooling part. A drilling part is provided on the drive part I, and a deburring part is provided on the drive part II. A crossbeam is provided between the drilling part and the drive part II. The drilling part includes a hydraulic rod, and a connector is fixedly connected to the inner end of the hydraulic rod. A push plate is fixedly connected to the connector, and a connecting rod is fixedly connected to the push plate. A convex disk I is fixedly connected to the end of the connecting rod away from the push plate. A contact ring is fixedly connected to the side of the push plate and the convex disk I that are close to each other. A guide post is slidably connected to the inner wall of the convex disk I. A flange is fixedly sleeved on the outer wall of one end of the guide post, and a hole-opening knife is installed at the other end of the guide post.

[0007] Preferably, the driving part includes a slider, a motor is mounted on the slider, an mounting plate is mounted on the outer wall of the motor, a U-shaped arm is fixedly connected to the mounting plate, a limit ring is fixedly connected to the mounting plate through the U-shaped arm, a push-button switch is embedded on the side of the limit ring that is away from the mounting plate, a gear is fixedly connected to the output shaft of the motor, a pneumatic telescopic rod is mounted on the slider, and a one-way valve and a two-way valve are respectively connected to the outer end of the pneumatic telescopic rod.

[0008] Preferably, the flange is rotatably connected between the inner wall of the mounting plate and the limiting ring, and the outer wall of the flange is fixedly fitted with a second gear, which meshes with the first gear.

[0009] Preferably, the driving part includes a slider two, a motor two is mounted on the slider two, a mounting plate two is fixedly sleeved on the outer wall of the motor two, a rotary joint is rotatably connected to the inner wall of the mounting plate two, a gear three is fixedly sleeved on the outer wall of the rotary joint, a gear four is fixedly connected to the output shaft of the motor two, the gear four meshes with the gear three, a convex disk two is fixedly connected to the side of the mounting plate two away from the gear three, and a retaining ring is fixedly connected to the side of the convex disk two away from the mounting plate two.

[0010] Preferably, the deburring part includes a sleeve, a sliding rod is slidably connected to the inner wall of the sleeve, one end of the sliding rod is rotatably connected to a rotary joint, and a deburring knife is fixedly connected to the inner wall of the rotary joint.

[0011] Preferably, a piston is fixedly connected to the other end of the slide rod, one end of the rod sleeve is connected to a one-way valve three, a one-way valve four is embedded in the center of the piston, a tapered hole is opened at the center of the axis of the slide rod, the large-diameter end of the tapered hole is connected to the one-way valve four, an air passage is opened at the center of the axis of the deburring knife, an air hole is opened on the spiral path of the deburring knife, the small-diameter end of the tapered hole is connected to the air passage, and the air passage and the air hole are connected.

[0012] Preferably, the tooling part includes a slide rail, a slider one is slidably connected to the inner wall of one end of the slide rail, the pneumatic telescopic rod is installed in the slide rail, and a slider two is slidably connected to the inner wall of the other end of the slide rail.

[0013] Preferably, a bidirectional screw is rotatably connected to the middle of the slide, and support plates are threaded to the outer walls of both sides of the bidirectional screw. V-shaped clamping arms are fixedly connected to the support plates at both ends of the bidirectional screw, and the gas chromatograph pump head is clamped between the V-shaped clamping arms.

[0014] Preferably, one end of the slide is fixedly connected to a first rod frame, the hydraulic rod is installed on the inner wall of the first rod frame, and the other end of the slide is fixedly connected to a second rod frame, the rod sleeve is fixedly connected to the inner wall of the second rod frame.

[0015] Preferably, the convex ends of the second convex disk and the first convex disk are both perpendicular to the tooling base plate, and the crossbeam is fixedly connected between the convex ends of the second convex disk and the first convex disk.

[0016] (III) Beneficial Effects Compared with the prior art, the present invention provides a micropore forming device for a gas chromatograph pump head, which has the following beneficial effects: 1. By linking hydraulic rods, push plates, contact rings and two sets of push-button switches, the processing steps of motor one and motor two can be automatically switched between start and stop in a time-sharing manner. This is different from the existing technology that requires manual switching of drilling and deburring equipment. It eliminates the secondary disassembly and assembly steps of the workpiece. The entire micro-hole forming process can be completed with only a single clamping of the gas chromatograph pump head. It avoids the positioning offset problem caused by secondary clamping and simplifies the operation process of precision micro-hole processing.

[0017] 2. By combining slider one, pneumatic telescopic rod, one-way valve one and one-way valve two, the drilling feed negative pressure self-locking and retraction air pressure buffering functions are realized. Unlike the existing technology that does not have a feed locking structure and is prone to free sliding of the slider, it can stably lock the feed position of the drilling part, while buffering the mechanical impact generated by the slider retraction, ensuring the feed stability of the gas chromatography pump head micro-hole forming process.

[0018] 3. Through the overall linkage of the rod sleeve, slide rod, piston, one-way valve three, one-way valve four, conical hole, air passage, and air hole, the deburring process is achieved by simultaneously using internal airflow to purge and remove impurities. This is different from the existing technology that relies solely on external spray guns to clean micropore debris. The tool advances and retreats simultaneously to complete the purging inside the hole, reducing the residual metal debris on the inner wall of the micropore and meeting the micropore cleanliness requirements of gas chromatograph pump heads.

[0019] 4. The device features a unique combination of transmission, gas path, and electrical triggering structures specifically adapted for the micro-hole forming of gas chromatograph pump heads. Unlike existing general-purpose drilling equipment that adapts to various pump bodies but lacks targeted processing linkage logic, this time-series linkage structure is designed specifically for the small-precision micro-hole processing of gas chromatograph pump heads. This solves the problem that general-purpose equipment cannot meet the specific usage requirements of burr-free and residue-free micro-holes. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a gas chromatograph pump head micropore forming device proposed in this invention; Figure 2 This is a schematic diagram of the tooling part of the present invention; Figure 3 This is a diagram showing the mating of the drive unit and the drilling unit of the present invention; Figure 4 This is an exploded view of the drilled portion of the present invention; Figure 5 This is a schematic diagram of the structure of the driving part of the present invention; Figure 6 This is a schematic diagram of the limiting ring structure of the present invention; Figure 7 This is a schematic diagram of the structure of the two driving parts of the present invention; Figure 8 This is a schematic diagram of the retaining ring of the present invention; Figure 9 This is an exploded view of the right side of the deburring section of the present invention; Figure 10 This is an exploded view of the left side of the deburring section of the present invention.

[0021] In the diagram: 1. Tooling base plate; 2. Tooling section; 21. Slide rail; 22. Bidirectional screw; 23. Support plate; 24. V-shaped clamping arm; 25. Rod frame one; 26. Rod frame two; 3. Drive unit one; 31. Slider one; 32. Motor one; 33. Mounting plate one; 34. Limit ring; 35. Push button switch; 36. Gear one; 37. Pneumatic telescopic rod; 38. One-way valve one; 39. One-way valve two; 4. Drilling section; 41. Hydraulic rod; 42. Connector; 43. Push plate; 44. Connecting rod; 45. Convex plate one; 46. 47. Contact ring; 48. Flange; 49. Guide post; 40. Hole opener; 410. Gear II; 5. Drive II; 51. Slider II; 52. Motor II; 53. Mounting plate II; 54. Rotary joint; 55. Gear III; 56. Gear IV; 57. Convex disc II; 58. Retaining ring; 6. Deburring section; 61. Rod sleeve; 62. Slide rod; 63. Deburring knife; 64. Piston; 65. Check valve III; 66. Check valve IV; 67. Tapered orifice; 68. Gas passage; 69. Gas port; 7. Crossbeam; 8. Gas chromatograph pump head. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Please see Figure 1 - Figure 10 This invention provides a micropore forming device for a gas chromatograph pump head, including a tooling base plate 1 and a gas chromatograph pump head 8. A machine tool control panel known in the art is mounted on the tooling base plate 1 for controlling the operation and logic of the equipment. A tooling part 2 is mounted on the tooling base plate 1. A drive part 3 and a drive part 5 are mounted on the tooling part 2. A drilling part 4 is provided on the drive part 3. A deburring part 6 is provided on the drive part 5. A crossbeam 7 is provided between the drilling part 4 and the drive part 5.

[0024] In use, the gas chromatograph pump head 8 to be processed is fixed in the middle of the tooling part 2; the control drive part 3 drives the drilling part 4 to feed towards the pump head to complete the micro-hole drilling. After the drilling is completed, the drive part 3 is reset, and the control drive part 2 5 drives the deburring part 6 to extend into the micro-hole to complete the burr removal of the hole wall; the crossbeam 7 maintains the coaxial positioning reference of the drilling part 4 and the deburring part 6 throughout the processing.

[0025] In this invention, the drilling part 4 includes a hydraulic rod 41. The inner end of the hydraulic rod 41 is fixedly connected to a connector 42. A push plate 43 is fixedly connected to the connector 42. A connecting rod 44 is fixedly connected to the push plate 43. A convex disc 45 is fixedly connected to the end of the connecting rod 44 away from the push plate 43. A touch ring 46 is fixedly connected to the side of the push plate 43 and the convex disc 45 that are close to each other. A guide post 48 is slidably connected to the inner wall of the convex disc 45. A flange 47 is fixedly sleeved on the outer wall of one end of the guide post 48. A hole-opening knife 49 is installed at the other end of the guide post 48.

[0026] In use, the hydraulic rod 41 extends and pushes the push plate 43, connecting rod 44, and convex disc 45 forward synchronously via the connector 42; the convex disc 45 pushes the guide column 48 forward as a whole through the contact ring 46, and the drilling cutter 49 at the end of the guide column 48 contacts the pump head workpiece to complete the drilling.

[0027] Furthermore, the drive unit 3 includes a slider 31, on which a motor 32 is mounted. A mounting plate 33 is mounted on the outer wall of the motor 32. A U-shaped arm is fixedly connected to the mounting plate 33. A limit ring 34 is fixedly connected to the mounting plate 33 through the U-shaped arm. A push-button switch 35 is embedded on the side of the limit ring 34 that is away from the mounting plate 33. The push-button switch 35 on the mounting plate 33 is electrically connected to the motor 32. A gear 36 is fixedly connected to the output shaft of the motor 32. A pneumatic telescopic rod 37 is mounted on the slider 31. A one-way valve 38 and a one-way valve 39 are respectively connected to the outer end of the pneumatic telescopic rod 37. A flange 47 is rotatably connected between the inner wall of the mounting plate 33 and the limit ring 34. A gear 410 is fixedly sleeved on the outer wall of the flange 47. The gear 410 meshes with the gear 36.

[0028] In use, the output torque of motor 32 drives gear 36 to rotate. Gear 36 meshes with gear 410 to drive flange 47, guide post 48, and drilling tool 49 to rotate synchronously. When guide post 48 moves back and forth to its limit position, touch ring 46 touches the corresponding button switch 35 to cut off or turn on the corresponding motor.

[0029] In this embodiment, the driving part 5 includes a second slider 51, a second motor 52 is mounted on the second slider 51, a button switch 35 on the limiting ring 34 is electrically connected to the second motor 52, a mounting plate 53 is fixedly sleeved on the outer wall of the second motor 52, a rotary joint 54 is rotatably connected to the inner wall of the mounting plate 53, a gear 55 is fixedly sleeved on the outer wall of the rotary joint 54, a gear 56 is fixedly connected to the output shaft of the second motor 52, the gear 56 meshes with the gear 55, a convex disk 57 is fixedly connected to the side of the mounting plate 53 away from the gear 55, a retaining ring 58 is fixedly connected to the side of the convex disk 57 away from the mounting plate 53, the retaining ring 58 limits the minimum retraction stroke of the slide rod 62, the convex end of the convex disk 57 and the convex end of the convex disk 45 are both perpendicular to the tooling base plate 1, and the crossbeam 7 is fixedly connected between the convex ends of the convex disk 57 and the convex disk 45.

[0030] In use, slider 2 51 slides along slide rail 21 to adjust the lateral distance between deburring part 6 and pump head workpiece; motor 2 52 outputs torque to drive gear 4 56 to rotate, gear 4 56 meshes with gear 3 55 to drive rotary joint 54 to rotate as a whole; crossbeam 7 constrains the relative position of convex disk 1 45 and convex disk 2 57 to ensure that the processing axes of hole opener 49 and deburring tool 63 coincide.

[0031] It is worth noting that the deburring part 6 includes a sleeve 61, a slide rod 62 is slidably connected to the inner wall of the sleeve 61, one end of the slide rod 62 is rotatably connected to the rotary joint 54, a deburring knife 63 is fixedly connected to the inner wall of the rotary joint 54, a piston 64 is fixedly connected to the other end of the slide rod 62, one end of the sleeve 61 is connected to a one-way valve 65, a one-way valve 66 is embedded in the center of the piston 64, a conical hole 67 is opened at the center of the axis of the slide rod 62, the large diameter end of the conical hole 67 is connected to the one-way valve 66, an air passage 68 is opened at the center of the axis of the deburring knife 63, an air hole 69 is opened on the spiral path of the deburring knife 63, the small diameter end of the conical hole 67 is connected to the air passage 68, and the air passage 68 and the air hole 69 are connected.

[0032] When in use, as the slide rod 62 extends, the piston 64 draws gas into the sleeve 61 through the one-way valve 65 and stores it. The deburring blade 63 extends forward into the micro-hole of the pump head to perform rotary deburring. When the slide rod 62 retracts, the piston 64 compresses the gas through the one-way valve 66 and into the conical hole 67. The gas is then transported along the air passage 68 to the air hole 69 of the deburring blade 63 and ejected outward to blow away metal debris in the micro-hole.

[0033] It is worth noting that the tooling part 2 includes a slide 21, a slider 31 slidably connected to the inner wall of one end of the slide 21, a pneumatic telescopic rod 37 installed inside the slide 21, a slider 51 slidably connected to the inner wall of the other end of the slide 21, a bidirectional screw 22 rotatably connected to the middle of the slide 21, a support plate 23 threadedly connected to the outer wall of the threaded sides of the bidirectional screw 22, V-shaped clamping arms 24 fixedly connected to the support plates 23 at both ends of the bidirectional screw 22, a gas chromatograph pump head 8 clamped between the V-shaped clamping arms 24, a rod holder 25 fixedly connected to one end of the slide 21, a hydraulic rod 41 installed on the inner wall of the rod holder 25, a rod holder 26 fixedly connected to the other end of the slide 21, and a rod sleeve 61 fixedly connected to the inner wall of the rod holder 26.

[0034] In use, rotating the bidirectional screw 22 causes the two side support plates 23 to move synchronously in opposite directions, driving the two sets of V-shaped clamping arms 24 to clamp the gas chromatograph pump head 8 to complete the workpiece positioning. The first rod bracket 25 fixes the installation position of the hydraulic rod 41, the second rod bracket 26 fixes the installation position of the rod sleeve 61, and the slide rail 21 provides linear sliding guidance for the first slider 31 and the second slider 51.

[0035] Working principle: First, rotate the bidirectional screw 22 of the tooling part 2 to drive the two side support plates 23 to move synchronously in opposite directions, which drives the V-shaped clamping arm 24 to clamp and position the gas chromatograph pump head 8. The crossbeam 7 fixes the relative position of the first convex disk 45 and the second convex disk 57, and locks the hole-opening knife 49 of the drilling part 4 and the deburring knife 63 of the deburring part 6 as coaxial references.

[0036] Subsequently, the inner rod of the hydraulic rod 41 installed on the control lever frame 25 extends forward. The hydraulic rod 41 pushes the push plate 43, connecting rod 44, and convex plate 45 forward synchronously via the connector 42. The touch ring 46 on the side of the push plate 43 presses the button switch 35 on the mounting plate 33, which activates the motor 32 of the drive unit 3. The output torque of the motor 32 meshes with the gear 410 through the gear 36 and drives the flange 47, guide column 48 and end hole cutter 49 to rotate synchronously to perform micro-hole drilling. When the slider 31 moves forward with the drilling part 4, it pulls the inner rod of the pneumatic telescopic rod 37 in the slide 21 to extend. The volume of the telescopic rod cavity expands to form a negative pressure. Outside air is drawn into the telescopic rod through the one-way valve 38. The negative pressure locks the slider 31 to prevent it from sliding axially without control.

[0037] After the micro-hole drilling of the pump head is completed, the inner rod of the hydraulic rod 41 retracts backward, pulling the push plate 43 and the convex plate 45 backward as a whole. The side contact ring 46 of the push plate 43 disengages from the button switch 35 of the mounting plate 33, the motor 32 stops rotating, and the rear contact ring 46 of the convex plate 45 simultaneously squeezes the button switch 35 on the limit ring 34, starting the motor 52 of the drive unit 5. The limit ring 34 pulls the mounting plate 33 and the slider 31 back to their original positions through the U-shaped arm, so that the hole-opening knife 49 completely exits the formed micro-hole of the gas chromatograph pump head 8. The slider 31 retracts and compresses the inner rod of the pneumatic telescopic rod 37. The pressurized gas inside the rod is discharged outward through the one-way valve 39, forming a buffer pressure to offset the impact of the slider's retraction.

[0038] The output torque of motor 2 52 drives rotary joint 54, slide rod 62 and deburring knife 63 to rotate synchronously through gear 4 56 meshing with gear 3 55. Slide rod 62 extends forward with rotary joint 54. Deburring knife 63 in the rotating state cuts and removes burrs from the micro-hole opening and hole wall. During the forward extension of slide rod 62, the internal volume of rod sleeve 61 increases and a negative pressure is formed. External gas is drawn into the rod sleeve 61 through one-way valve 3 65 to complete gas storage.

[0039] Subsequently, the hydraulic rod 41 is controlled to extend forward again, and the convex disk 57 is moved forward by the crossbeam 7, which pulls the slide rod 62 to retract into the sleeve 61. The piston 64 at the rear end of the slide rod 62 squeezes the gas stored in the sleeve 61. The high-pressure gas opens the one-way valve 66 in the center of the piston 64 and flows into the conical hole 67 on the axis of the slide rod 62. The gas is transported along the conical hole 67 to the air passage 68 inside the deburring knife 63, and finally continuously sprayed outward from the air hole 69 opened in the spiral path of the deburring knife 63. During the entire process of the deburring knife 63 retracting and exiting the microhole, the high-pressure airflow washes the inner wall of the microhole, thoroughly blowing away the metal debris and powder impurities generated by the microhole forming process.

[0040] After the hydraulic rod 41 is fully extended and then retracted, the touch ring 46 disengages from the button switch 35 of the limit ring 34, the motor 52 is powered off and stopped, and the bidirectional screw 22 is rotated in the opposite direction to release the V-shaped clamping arm 24, and the processed gas chromatograph pump head 8 can be removed.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A micropore forming device for a gas chromatograph pump head, comprising a tooling substrate (1) and a gas chromatograph pump head (8), characterized in that: A tooling part (2) is mounted on the tooling base plate (1). A drive part 1 (3) and a drive part 2 (5) are mounted on the tooling part (2). A drilling part (4) is provided on the drive part 1 (3), and a deburring part (6) is provided on the drive part 2 (5). A crossbeam (7) is provided between the drilling part (4) and the drive part 2 (5). The drilling part (4) includes a hydraulic rod (41). A connector (42) is fixedly connected to the inner end of the hydraulic rod (41). A connector (42) is fixedly connected to the connector (42). There is a push plate (43), and a connecting rod (44) is fixedly connected to the push plate (43). A convex disc (45) is fixedly connected to the end of the connecting rod (44) away from the push plate (43). A touch ring (46) is fixedly connected to the side of the push plate (43) and the convex disc (45) that are close to each other. A guide post (48) is slidably connected to the inner wall of the convex disc (45). A flange (47) is fixedly sleeved on the outer wall of one end of the guide post (48). A hole punch (49) is installed on the other end of the guide post (48).

2. The micropore forming device for a gas chromatograph pump head according to claim 1, characterized in that: The drive unit (3) includes a slider (31), a motor (32) is mounted on the slider (31), an mounting plate (33) is mounted on the outer wall of the motor (32), a U-shaped arm is fixedly connected to the mounting plate (33), a limit ring (34) is fixedly connected to the mounting plate (33) through the U-shaped arm, a button switch (35) is embedded on the side of the limit ring (34) that is far away from the mounting plate (33), a gear (36) is fixedly connected to the output shaft of the motor (32), a pneumatic telescopic rod (37) is mounted on the slider (31), and a one-way valve (38) and a one-way valve (39) are respectively connected to the outer end of the pneumatic telescopic rod (37).

3. The micropore forming device for a gas chromatograph pump head according to claim 2, characterized in that: The flange (47) is rotatably connected between the inner wall of the mounting plate (33) and the limiting ring (34), and the outer wall of the flange (47) is fixedly fitted with a gear (410), which meshes with the gear (36).

4. The micropore forming device for a gas chromatograph pump head according to claim 2, characterized in that: The drive unit (5) includes a slider (51), on which a motor (52) is mounted. A mounting plate (53) is fixedly sleeved on the outer wall of the motor (52). A rotary joint (54) is rotatably connected to the inner wall of the mounting plate (53). A gear (55) is fixedly sleeved on the outer wall of the rotary joint (54). A gear (56) is fixedly connected to the output shaft of the motor (52). The gear (56) meshes with the gear (55). A convex disc (57) is fixedly connected to the side of the mounting plate (53) away from the gear (55). A retaining ring (58) is fixedly connected to the side of the convex disc (57) away from the mounting plate (53).

5. The micropore forming device for a gas chromatograph pump head according to claim 4, characterized in that: The deburring part (6) includes a sleeve (61), and a slide rod (62) is slidably connected to the inner wall of the sleeve (61). One end of the slide rod (62) is rotatably connected to a rotary joint (54), and a deburring knife (63) is fixedly connected to the inner wall of the rotary joint (54).

6. The micropore forming device for a gas chromatograph pump head according to claim 5, characterized in that: The other end of the slide rod (62) is fixedly connected to a piston (64). One end of the rod sleeve (61) is connected to a one-way valve three (65). A one-way valve four (66) is embedded in the center of the piston (64). A conical hole (67) is opened at the center of the axis of the slide rod (62). The large diameter end of the conical hole (67) is connected to the one-way valve four (66). An air passage (68) is opened at the center of the axis of the deburring knife (63). An air hole (69) is opened on the spiral path of the deburring knife (63). The small diameter end of the conical hole (67) is connected to the air passage (68). The air passage (68) is connected to the air hole (69).

7. The micropore forming device for a gas chromatograph pump head according to claim 6, characterized in that: The tooling part (2) includes a slide (21), the first slider (31) is slidably connected to the inner wall of one end of the slide (21), the pneumatic telescopic rod (37) is installed in the slide (21), and the second slider (51) is slidably connected to the inner wall of the other end of the slide (21).

8. The micropore forming device for a gas chromatograph pump head according to claim 7, characterized in that: The slide (21) is rotatably connected to a bidirectional screw (22). Both sides of the bidirectional screw (22) are threaded with support plates (23). Both ends of the bidirectional screw (22) are fixedly connected with V-shaped clamping arms (24). The gas chromatograph pump head (8) is clamped between the V-shaped clamping arms (24).

9. The micropore forming device for a gas chromatograph pump head according to claim 7, characterized in that: One end of the slide (21) is fixedly connected to a rod frame one (25), the hydraulic rod (41) is installed on the inner wall of the rod frame one (25), the other end of the slide (21) is fixedly connected to a rod frame two (26), and the rod sleeve (61) is fixedly connected to the inner wall of the rod frame two (26).

10. The gas chromatograph pump head micropore forming device according to claim 4, characterized in that: The convex ends of the second convex disk (57) and the first convex disk (45) are both perpendicular to the tooling base plate (1), and the crossbeam (7) is fixedly connected between the convex ends of the second convex disk (57) and the first convex disk (45).

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