Small drilling device for mold machining

Abstract

The utility model provides a small drilling device for die machining. The small drilling device comprises a workbench, a clamping mechanism, a drilling mechanism and an adjusting mechanism. The workbench comprises a mounting bottom plate, and a positioning table and a support frame which are arranged on the mounting bottom plate; kidney-shaped holes for fixing are formed in the mounting bottom plate; the clamping mechanism is installed on the positioning table and fixes the mold in the front direction, the rear direction, the left direction and the right direction. The drilling mechanism comprises a drilling machine vertically suspended above the positioning table, a drill bit mounted at the bottom of the drilling machine, a mounting plate mounted at the top of the drilling machine and a protective cover which covers the outer sides of the drilling machine and the drill bit and is telescopic in the vertical direction; the adjusting mechanism is arranged on the supporting frame, the drilling mechanism is connected with the adjusting mechanism through a mounting plate, and the adjusting mechanism adjusts the position of the drilling mechanism in the transverse direction, the longitudinal direction and the vertical direction. The small drilling device for die machining is reasonable in structural design, good in clamping stability and capable of preventing chippings and tiny dust from splashing.

Description

Technical Field

[0001] This utility model belongs to the field of mold processing equipment, and in particular relates to a small drilling device for mold processing. Background Technology

[0002] Drilling is a common machining process in mold making, typically performed using a drilling device. In this device, the mold is placed on a mold operating platform and secured by a clamping mechanism before the drill bit drills through it. Traditional drilling devices suffer from the following problems: the operating platform is often a vertical table structure, requiring additional space and unsuitable for limited processing rooms; the clamping mechanisms are often unidirectional or bidirectional, resulting in insufficient clamping stability and easy mold displacement during drilling; and drilling debris and fine dust are easily scattered, affecting the working environment. Utility Model Content

[0003] In view of this, in order to solve the above-mentioned technical problems, this utility model proposes a small drilling device for mold processing with a reasonable structural design, which can achieve four-way clamping and fixing, has good clamping stability, and can prevent debris and dust from flying during drilling.

[0004] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0005] A small drilling device for mold processing, comprising:

[0006] The workbench includes a mounting base plate, a positioning platform disposed on the mounting base plate, and a support frame disposed on the mounting base plate; the mounting base plate is provided with fixing waist holes;

[0007] A clamping mechanism is mounted on the positioning platform and is used to fix the mold placed on the positioning platform from four directions: front, back, left, and right.

[0008] A drilling mechanism, comprising a drilling machine vertically suspended above the positioning platform, a drill bit installed at the bottom output end of the drilling machine, a mounting plate installed on the top of the drilling machine, and a protective cover with a lower opening covering the outside of the drilling machine and the drill bit; the top of the protective cover is connected to the mounting plate, and the protective cover is a telescopic protective cover in the vertical direction.

[0009] An adjustment mechanism is mounted on the support frame and located above the positioning platform; the drilling mechanism is connected to the adjustment mechanism via a mounting plate, and the adjustment mechanism adjusts the position of the drilling mechanism in the horizontal, vertical and longitudinal directions.

[0010] The mounting base plate is the load-bearing component of the entire device. Replacing the common vertical table structure, the mounting base plate can be placed directly on the operating table in the control room (with threaded mounting holes) during use. The device is then secured by bolts screwed into the waist holes and threaded mounting holes. When not in use, the bolts can be removed, and the device can be disassembled without affecting the use of the operating table. The mold is placed on the worktable and secured from four directions (front, back, left, and right) by a clamping mechanism, ensuring good clamping stability. The adjustment mechanism allows for horizontal, vertical, and longitudinal adjustment of the drilling mechanism's position. Because the protective cover is a vertically retractable type, it can cover the drill bit without affecting normal drilling, effectively preventing debris and dust from flying during the drilling process.

[0011] Furthermore, the positioning platform is a rectangular shell structure with an internal cavity, and its upper end has elongated slide holes on both the front and rear sides arranged in the left and right direction.

[0012] Furthermore, the positioning platform has an opening at its center, and a load-bearing plate is embedded in the opening. The positioning platform's inner cavity is provided with a load-bearing column that supports the load-bearing plate.

[0013] Considering that some molds are quite heavy, the cavity shell of the positioning platform may be damaged under long-term load. Therefore, a load-bearing plate supported by load-bearing columns is installed to share most of the pressure.

[0014] Furthermore, the clamping mechanism includes left and right clamping mechanisms and front and rear clamping mechanisms;

[0015] The left and right clamping mechanisms include a bidirectional threaded rod rotatable in the left and right direction and disposed in the inner cavity of the positioning platform; a rotary drive handwheel disposed on the outside of the positioning platform to drive the bidirectional threaded rod to rotate; two movable rings sleeved on the bidirectional threaded rod and respectively matching the threads on both sides; a guide rod disposed in the inner cavity of the positioning platform and parallel to the bidirectional threaded rod; two follower rings sleeved on the guide rod; and a left clamping plate and a right clamping plate disposed on the upper surface of the positioning platform. The bidirectional threaded rod and the guide rod are respectively located below the two elongated slide holes. Each movable ring and the follower ring is provided with a sliding block that slides through the elongated slide hole. The left clamping plate and the right clamping plate are symmetrically arranged left and right. The front and rear ends of the left clamping plate are respectively connected to the two sliding blocks located on the left side, and the front and rear ends of the right clamping plate are respectively connected to the two sliding blocks located on the right side.

[0016] The front and rear clamping mechanism includes mounting seats located on the left side of the left clamping plate or the right side of the right clamping plate at both ends, a bidirectional threaded rod rotatably mounted on the two mounting seats in the front-rear direction, a rotary drive handwheel located outside the mounting seats to drive the bidirectional threaded rod to rotate, two movable rings sleeved on the bidirectional threaded rod and respectively matching the threads on both sides, two sliding blocks on the two movable rings, a front clamping plate and a rear clamping plate; the left clamping plate or the right clamping plate is provided with a long strip-shaped slide hole in the front-rear direction, and the two sliding blocks slide through the long strip-shaped slide hole and are respectively connected to the front clamping plate and the rear clamping plate.

[0017] Rotating the rotary drive handwheel can drive the bidirectional threaded rod to rotate, thereby causing the two moving rings to move in opposite directions, which in turn drives the sliding block to slide in the elongated slide hole in the left and right direction, ultimately realizing the left and right movement of the left and right clamping plates, and achieving clamping and fixing of the mold in the left and right directions; the guide rod is set parallel to the bidirectional threaded rod, and the two follower rings on it will move in the left and right direction together under the drive, playing a guiding and stabilizing role;

[0018] The front and rear clamping mechanisms are installed on the left or right clamping plate; rotating the rotary drive handwheel can drive the bidirectional threaded rod to rotate, thereby causing the two moving rings to move in opposite directions, which in turn drives the sliding block to slide in the long strip slide hole in the left and right direction, ultimately realizing the front and rear movement of the front and rear clamping plates, and realizing the clamping and fixing of the mold in the front and rear directions; the size of the front and rear clamping plates is much smaller than that of the left and right clamping plates, so as to be able to clamp the front and rear sides of the mold without affecting the opposite movement between the left and right clamping plates.

[0019] Furthermore, the left clamping plate, the right clamping plate, the front clamping plate, and the right clamping plate all include a plate body and a soft pad layer disposed on the clamping surface of the plate body.

[0020] Furthermore, the support frame includes a back plate vertically disposed on the mounting base plate and a cover plate disposed on the top of the back plate and suspended above the positioning platform.

[0021] Furthermore, the adjustment mechanism includes a transverse electric guide rail assembly fixed to the lower end face of the cover plate, a longitudinal electric guide rail assembly connected to the movable plate of the transverse electric guide rail assembly, and a vertical hydraulic telescopic rod connected to the movable plate of the longitudinal electric guide rail assembly; the drilling mechanism is connected to the telescopic end of the vertical hydraulic telescopic rod through a mounting plate.

[0022] The horizontal electric guide rail assembly can adjust the positions of the vertical electric guide rail assembly, the vertical hydraulic telescopic rod, and the drilling mechanism in the horizontal direction, that is, adjust the position of the actual drilling mechanism in the horizontal direction; the vertical electric guide rail assembly can adjust the position of the vertical hydraulic telescopic rod and the drilling mechanism in the vertical direction, that is, adjust the position of the drilling mechanism in the vertical direction; the vertical hydraulic telescopic rod can adjust the position of the drilling mechanism in the vertical direction; that is, the drilling mechanism can be adjusted in the horizontal, vertical, and longitudinal directions by means of the horizontal electric guide rail assembly, the vertical electric guide rail assembly, and the vertical hydraulic telescopic rod.

[0023] Furthermore, the protective cover is a transparent structure, including a top plate connected to the mounting plate, an annular fixed cover surrounding the edge of the top plate, an annular movable cover vertically connected to the annular fixed cover, and a corrugated telescopic tube connected to the bottom of the annular movable cover; the top plate of the cover is provided with an adsorption tube interface communicating with the inner cavity of the protective cover.

[0024] The protective cover is transparent, facilitating observation of the drilling process. The top plate of the cover can be bolted to the mounting plate for easy disassembly and maintenance. During drilling, the corrugated telescopic tube contacts the mold and can extend or retract to accommodate the drill bit's insertion. The insertion connection between the annular movable cover and the annular fixed cover also allows for extension and retraction. Through the cooperation of the annular fixed cover, the annular movable cover, and the corrugated telescopic tube, a dynamic seal can be achieved between the drill bit and the mold surface during drilling, providing comprehensive coverage of the drilling area and preventing debris from flying and splashing. The adsorption tube interface can be connected to an external negative pressure adsorption system for efficient debris removal.

[0025] Furthermore, the annular movable cover is provided with a sliding cavity, and the lower end of the annular fixed cover is slidably inserted into the sliding cavity.

[0026] Furthermore, a counterweight ring is provided at the bottom end of the corrugated telescopic tube.

[0027] Compared with the prior art, the small drilling device for mold processing described in this utility model has the following advantages:

[0028] (1) The small drilling device for mold processing described in this utility model has a reasonable structural design. It uses a mounting base plate as the load-bearing component of the entire device. The mounting base plate can be placed on a common operating table in the operating room and can be detachably fixed by bolts, which is convenient for use and storage and reduces the space occupied. It adopts a four-way clamping mode, which effectively improves the clamping stability of the mold and avoids the mold from shifting during the drilling process. The drilling mechanism is equipped with a protective cover, which can cover the drill bit without affecting the normal drilling of the drill bit, effectively preventing the flying of debris and dust generated during the drilling process.

[0029] (2) The positioning platform described in this utility model is equipped with a load-bearing plate and a load-bearing column, which can improve the load-bearing capacity and avoid damage to the positioning platform caused by heavy molds over a long period of time.

[0030] (3) The clamping mechanism described in this utility model fixes the mold in the left and right directions through the left and right clamping mechanisms, and then fixes the mold in the front and back directions through the front and back clamping mechanisms; both the left and right clamping mechanisms and the front and back clamping mechanisms use a rotating bidirectional threaded rod to drive the clamping plate, which is convenient to operate and has low production cost.

[0031] (4) The protective cover of this utility model adopts a vertically adjustable telescopic structure, which perfectly adapts to the working process of the drill bit, realizes dynamic sealing with the mold surface, avoids debris flying and splashing, and then the adsorption tube is connected to the external negative pressure adsorption system to remove debris in time. Attached Figure Description

[0032] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0033] Figure 1 This is a front structural diagram of the small drilling device for mold processing described in an embodiment of the present invention;

[0034] Figure 2 This is a side view of the small drilling device for mold processing described in an embodiment of the present invention;

[0035] Figure 3 This is a top view showing the installation position of the workbench and clamping mechanism described in this embodiment of the utility model;

[0036] Figure 4 for Figure 3 The diagram shows the internal structure of the positioning stage.

[0037] Figure 5 This is a schematic diagram of the internal structure of the installation position of the workbench and clamping mechanism described in this embodiment of the utility model;

[0038] Figure 6 This is a schematic diagram of the drilling mechanism described in an embodiment of the present invention.

[0039] Explanation of reference numerals in the attached figures:

[0040] 1- Mounting base plate, 2- Positioning platform, 3- Support frame, 4- Fixing waist hole, 5- Long strip slide hole 1, 6- Load-bearing plate, 7- Load-bearing column, 8- Double-sided threaded rod 1, 9- Rotary drive handwheel 1, 10- Moving ring 1, 11- Guide rod, 12- Follower ring, 13- Left clamping plate, 14- Right clamping plate, 15- Sliding block 1, 16- Mounting base, 17- Double-sided threaded rod 2, 18- Rotary drive handwheel 2, 19- Moving ring Ring 2, 20-Sliding Block 2, 21-Front Clamping Plate, 22-Rear Clamping Plate, 23-Horizontal Electric Guide Rail Assembly, 24-Longitudinal Electric Guide Rail Assembly, 25-Vertical Hydraulic Telescopic Rod, 26-Drill Rig, 27-Drill Bit, 28-Mounting Plate, 29-Protective Cover, 30-Top Plate of Cover, 31-Annular Fixed Cover, 32-Annular Movable Cover, 33-Corrugated Telescopic Pipe, 34-Adsorption Pipe Interface, 35-Sliding Cavity, 36-Counterweight Ring. Detailed Implementation

[0041] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0042] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0043] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0044] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0045] like Figures 1 to 6 As shown, a small drilling device for mold processing includes a worktable, a clamping mechanism, an adjusting mechanism, and a drilling mechanism;

[0046] The workbench includes a mounting base plate 1, a positioning platform 2 mounted on the mounting base plate 1, and a support frame 3 mounted on the mounting base plate 1. The mounting base plate 1 is a rectangular structure with a fixing waist hole 4. The positioning platform 2 is a rectangular shell structure with an internal cavity. Both the front and rear sides of its upper end are provided with elongated slide holes 5 arranged in the left and right directions. The center of the positioning platform 2 is opened, and a load-bearing plate 6 is embedded in the opening. The inner cavity of the positioning platform 2 is provided with a load-bearing column 7 that supports the load-bearing plate 6. The support frame 3 includes a back plate vertically mounted on the mounting base plate 1 and a cover plate located on the top of the back plate and suspended above the positioning platform 2.

[0047] The clamping mechanism is mounted on the positioning table 2 and is used to fix the mold placed on the positioning table 2 from four directions: front, back, left, and right. The clamping mechanism includes left and right clamping mechanisms and front and rear clamping mechanisms. The left and right clamping mechanisms include a bidirectional threaded rod 8 rotatable in the left and right direction and located in the inner cavity of the positioning table 2; a rotary drive handwheel 9 located on the outside of the positioning table 2 to drive the bidirectional threaded rod 8 to rotate; two movable rings 10 sleeved on the bidirectional threaded rod 8 and respectively matching the threads on both sides; and a clamping mechanism located on the positioning table 2. The positioning platform 2 includes a guide rod 11 parallel to the bidirectional threaded rod 8 within its inner cavity, two follower rings 12 sleeved on the guide rod 11, and a left clamping plate 13 and a right clamping plate 14 located on the upper surface of the positioning platform 2. The bidirectional threaded rod 8 and the guide rod 11 are respectively located below the two elongated slide holes 5. Both the moving ring 10 and the follower ring 12 are provided with sliding blocks 15 that slide through the elongated slide holes 5. The left clamping plate 13 and the right clamping plate 14 are symmetrically arranged on the left and right sides. The front and rear ends of the left clamping plate 13 are respectively connected to two sliding blocks 15 located on the left side, and the front and rear ends of the right clamping plate 14 are respectively connected to two sliding blocks 15 located on the right side; the front and rear clamping mechanism includes mounting seats 16 located at the front and rear ends of the left side of the left clamping plate 13, a bidirectional threaded rod 17 rotatably mounted on the two mounting seats 16 in the front-rear direction, a rotary drive handwheel 18 located outside the mounting seats 16 to drive the bidirectional threaded rod 17 to rotate, and a handwheel sleeved on the bidirectional threaded rod 17. The system includes two movable rings 19 that match the threads on both sides, two sliding blocks 20 on the two movable rings 19, a front clamping plate 21, and a rear clamping plate 22; the left clamping plate 13 has a long strip-shaped slide hole 2 along the front-back direction, and the two sliding blocks 20 slide through the long strip-shaped slide hole 2 and are respectively connected to the front clamping plate 21 and the rear clamping plate 22; the left clamping plate 13, the right clamping plate 14, the front clamping plate 21, and the right clamping plate 22 all include a plate body and a soft pad layer on the clamping surface of the plate body;

[0048] The adjustment mechanism is installed on the support frame 3 and located above the positioning platform 2. It includes a transverse electric guide rail assembly 23 fixed to the lower end face of the cover plate, a longitudinal electric guide rail assembly 24 connected to the moving plate of the transverse electric guide rail assembly 23, and a vertical hydraulic telescopic rod 25 connected to the moving plate of the longitudinal electric guide rail assembly 24.

[0049] The drilling mechanism includes a drilling rig 26 vertically suspended above the positioning platform 2, a drill bit 27 mounted on the bottom output end of the drilling rig 26, a mounting plate 28 mounted on the top of the drilling rig 26, and a protective cover 29 with an open lower end covering the outside of the drilling rig 26 and the drill bit 27. The drilling mechanism is connected to the telescopic end of the vertical hydraulic telescopic rod 25 through the mounting plate 28. The protective cover 29 is a transparent structure, including a top plate 30 connected to the mounting plate 28 and a surrounding structure. The ring-shaped fixed cover 31 is attached to the edge; the ring-shaped movable cover 32 is vertically inserted and connected to the ring-shaped fixed cover 31; and the corrugated telescopic tube 33 is connected to the bottom of the ring-shaped movable cover 32. The top plate 30 of the cover is provided with an adsorption tube interface 34 that communicates with the inner cavity of the protective cover 29. The ring-shaped movable cover 32 is provided with a sliding cavity 35, and the lower end of the ring-shaped fixed cover 31 is slidably inserted into the sliding cavity 35. The bottom end of the corrugated telescopic tube 33 is provided with a counterweight ring 36.

[0050] The working process of the small drilling device for mold processing described in this utility model is as follows:

[0051] Place the mold on the positioning platform 2, located at the load-bearing plate 6;

[0052] Rotating the rotary drive handwheel 9 drives the bidirectional threaded rod 8 to rotate, and the moving ring 10 drives the left clamping plate 13 and the right clamping plate 14 to move synchronously towards the center, clamping and fixing the mold from the left and right sides; rotating the rotary drive handwheel 18 drives the bidirectional threaded rod 17 to rotate, and the moving ring 19 drives the front clamping plate 21 and the rear clamping plate 22 to move closer to each other, clamping and fixing the mold from the front and rear sides.

[0053] The adjusting mechanism adjusts the position of the drilling mechanism so that the drill bit 27 is aligned with the processing point. When the drill bit 27 descends, the counterweight ring 36 at the bottom of the protective cover 29 automatically fits into the mold surface to form a sealed space. As the drill bit 27 extends into the hole, the protective cover 29 extends and retracts to achieve dynamic fitting with the mold. At the same time, the protective cover 29 is connected to a negative pressure adsorption system, which can adsorb and remove debris and dust in a timely manner.

[0054] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A small drilling device for mold processing, characterized in that, include: The workbench includes a mounting base plate, a positioning platform disposed on the mounting base plate, and a support frame disposed on the mounting base plate; the mounting base plate is provided with fixing waist holes; A clamping mechanism is mounted on the positioning platform and is used to fix the mold placed on the positioning platform from four directions: front, back, left, and right. A drilling mechanism, comprising a drilling machine vertically suspended above the positioning platform, a drill bit installed at the bottom output end of the drilling machine, a mounting plate installed on the top of the drilling machine, and a protective cover with a lower opening covering the outside of the drilling machine and the drill bit; the top of the protective cover is connected to the mounting plate, and the protective cover is a telescopic protective cover in the vertical direction. An adjustment mechanism is mounted on the support frame and located above the positioning platform; the drilling mechanism is connected to the adjustment mechanism via a mounting plate, and the adjustment mechanism adjusts the position of the drilling mechanism in the horizontal, vertical and longitudinal directions.

2. The small-sized drilling device for mold processing according to claim 1, characterized by: The positioning platform is a rectangular shell structure with an internal cavity, and its upper end has a long strip-shaped slide hole on both the front and back sides, which is arranged in the left and right direction.

3. The small drill device for mold processing according to claim 2, characterized by: The positioning platform has an opening at its center, and a load-bearing plate is embedded in the opening. The positioning platform has a load-bearing column inside to support the load-bearing plate.

4. The small drill device for mold processing according to claim 2, characterized by: The clamping mechanism includes left and right clamping mechanisms and front and rear clamping mechanisms; The left and right clamping mechanisms include a bidirectional threaded rod rotatable in the left and right direction and disposed in the inner cavity of the positioning platform; a rotary drive handwheel disposed on the outside of the positioning platform to drive the bidirectional threaded rod to rotate; two movable rings sleeved on the bidirectional threaded rod and respectively matching the threads on both sides; a guide rod disposed in the inner cavity of the positioning platform and parallel to the bidirectional threaded rod; two follower rings sleeved on the guide rod; and a left clamping plate and a right clamping plate disposed on the upper surface of the positioning platform. The bidirectional threaded rod and the guide rod are respectively located below the two elongated slide holes. Each movable ring and the follower ring is provided with a sliding block that slides through the elongated slide hole. The left clamping plate and the right clamping plate are symmetrically arranged left and right. The front and rear ends of the left clamping plate are respectively connected to the two sliding blocks located on the left side, and the front and rear ends of the right clamping plate are respectively connected to the two sliding blocks located on the right side. The front and rear clamping mechanism includes mounting seats located on the left side of the left clamping plate or the right side of the right clamping plate at both ends, a bidirectional threaded rod rotatably mounted on the two mounting seats in the front-rear direction, a rotary drive handwheel located outside the mounting seats to drive the bidirectional threaded rod to rotate, two movable rings sleeved on the bidirectional threaded rod and respectively matching the threads on both sides, two sliding blocks on the two movable rings, a front clamping plate and a rear clamping plate; the left clamping plate or the right clamping plate is provided with a long strip-shaped slide hole in the front-rear direction, and the two sliding blocks slide through the long strip-shaped slide hole and are respectively connected to the front clamping plate and the rear clamping plate.

5. The small drill device for mold processing according to claim 4, characterized by: The left clamping plate, the right clamping plate, the front clamping plate, and the right clamping plate all include a plate body and a soft pad layer disposed on the clamping surface of the plate body.

6. The compact drilling apparatus for mold processing according to Claim 1, characterized by: The support frame includes a back plate vertically mounted on the mounting base plate and a cover plate located on top of the back plate and suspended above the positioning platform.

7. The small drill device for mold processing according to claim 6, characterized by: The adjustment mechanism includes a transverse electric guide rail assembly fixed to the lower end face of the cover plate, a longitudinal electric guide rail assembly connected to the movable plate of the transverse electric guide rail assembly, and a vertical hydraulic telescopic rod connected to the movable plate of the longitudinal electric guide rail assembly; the drilling mechanism is connected to the telescopic end of the vertical hydraulic telescopic rod through a mounting plate.

8. The compact drilling apparatus for mold processing according to Claim 1, characterized by: The protective cover is a transparent structure, including a top plate connected to the mounting plate, an annular fixed cover surrounding the edge of the top plate, an annular movable cover vertically connected to the annular fixed cover, and a corrugated telescopic tube connected to the bottom of the annular movable cover; the top plate of the cover is provided with an adsorption tube interface communicating with the inner cavity of the protective cover.

9. The small drill device for mold processing according to claim 8, characterized by: The annular movable cover is provided with a sliding cavity, and the lower end of the annular fixed cover is slidably inserted into the sliding cavity.

10. The small drill device for mold processing according to claim 8, characterized by: The bottom end of the corrugated expansion tube is equipped with a counterweight ring.

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