Engraving needle positioning regulator of electronic engraving machine

Abstract

The utility model discloses an engraving needle positioning regulator of an electronic engraving machine. The engraving needle positioning regulator comprises a sliding foot shaft, an outer shaft sleeve, a tensioning mechanism and a sliding foot shaft knob, the tensioning mechanism is contained in the outer shaft sleeve, the sliding foot shaft is arranged in the tensioning mechanism in a penetrating mode in the axial direction, the front end of the sliding foot shaft can penetrate out of the front end of the outer shaft sleeve, and the rear end of the sliding foot shaft penetrates out of the rear end of the outer shaft sleeve and is connected with the sliding foot shaft rotary knob. The sliding foot shaft can move back and forth relative to the tensioning mechanism by rotating the sliding foot shaft knob; and the tensioning mechanism is used for locking or loosening the sliding foot shaft so as to lock or unlock the front-back movement of the sliding foot shaft. The positioning precision of the initial carving depth of the carving needle is prevented from being affected by fine deviation caused by looseness of the regulator, the carving quality is improved, and the carving failure rate in the plate making process is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic engraving machine equipment, in particular to an engraving needle positioning regulator for an intaglio printing electronic engraving machine. Background Art

[0002] The engraving head of the electronic engraving machine engraves micron-level concave holes on the plate roller (such as the copper printing plate roller). The engraving head of the electronic engraving machine is divided into two modes: mechanical engraving and laser engraving. Laser engraving is non-contact positioning by adjusting the light spot, while mechanical engraving is different from laser engraving. Mechanical engraving requires the engraving needle to reliably contact and position on the plate roller to accurately engrave. Therefore, before engraving, it is necessary to locate the initial distance between the engraving needle and the surface of the plate roller. The initial distance is used as a reference to accurately determine the depth of each engraving. Therefore, in the existing mechanical engraving method, an engraving needle positioning regulator is generally set on the engraving head in parallel with the adjacent position of the engraving needle. The engraving needle positioning regulator has a top. When positioning, the top needs to always contact the surface of the plate roller. At the same time, the distance between the top and the engraving needle can be adjusted and can be accurately measured through the instrument panel. In this way, adjusting the distance between the top and the engraving needle is equivalent to adjusting the initial distance between the engraving needle and the surface of the plate roller. This initial distance is the initial engraving depth of the engraving needle. The accuracy of the initial engraving depth affects the subsequent engraving accuracy on the entire plate roller. The engraving needle positioning regulator can control the initial engraving depth positioning of the engraving needle within the adjustment accuracy of um level.

[0003] The existing engraving needle positioning regulator has a simple structure, and only has a threaded push rod for positioning, which is prone to loosening, thereby affecting the positioning accuracy of the initial engraving depth of the engraving needle, thereby affecting the engraving quality.

[0004] Therefore, the prior art needs to be improved. Utility Model Content

[0005] In view of the above-mentioned shortcomings of the prior art, the purpose of the utility model is to provide an engraving needle positioning adjuster for an electronic engraving machine, aiming to prevent the adjuster from loosening and causing slight deviations that affect the positioning accuracy of the initial engraving depth of the engraving needle, thereby improving the engraving quality and reducing the engraving failure rate during the plate making process.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] An engraving needle positioning regulator for an electronic engraving machine, comprising a sliding foot shaft, an outer shaft sleeve, a tensioning mechanism and a sliding foot shaft knob;

[0008] The tensioning mechanism is accommodated in the outer sleeve, the slide foot shaft is axially inserted into the tensioning mechanism, and the front end of the slide foot shaft can pass through the front end of the outer sleeve, and the rear end of the slide foot shaft passes through the rear end of the outer sleeve and is connected to the slide foot shaft knob, and the slide foot shaft can be moved forward and backward relative to the tensioning mechanism by rotating the slide foot shaft knob;

[0009] The tensioning mechanism locks or releases the slide foot shaft to lock or unlock the forward and backward movement of the slide foot shaft.

[0010] In some examples, a clamping claw is disposed at the front of the tensioning mechanism, an adjusting portion is disposed at the rear of the tensioning mechanism, and a revealing opening is provided on the outer sleeve to reveal the adjusting portion;

[0011] The slide foot shaft is spirally connected with the tensioning mechanism in the tensioning mechanism, and when the slide foot shaft knob is rotated, the slide foot shaft rotates relative to the tensioning mechanism and moves forward and backward;

[0012] When the adjusting part is rotated or pushed, the clamping claws of the tensioning mechanism lock or release the outer wall of the sliding foot shaft.

[0013] In some examples, the tensioning mechanism includes a tensioning sleeve and a propulsion sleeve that abut against each other front and back inside the outer sleeve, the propulsion sleeve is spirally connected to the outer sleeve, the propulsion sleeve is provided with an adjustment portion for rotating the propulsion sleeve, a first contraction slope is provided inside the front end of the outer sleeve, the clamping claw is provided at the front of the tensioning sleeve, and the clamping claw has a second contraction slope abutting against the first contraction slope.

[0014] In some examples, the clamping jaw is a tapered tube having a plurality of axial through slots distributed circumferentially.

[0015] In some examples, the tension sleeve also includes a straight tube connected to the large end of the tapered tube, the straight tube has a guide groove extending toward the tapered tube, the outer sleeve is provided with a limiting hole, and the pin is inserted into the guide groove from the limiting hole.

[0016] In some examples, the propulsion sleeve includes a threaded pipe section abutting against the tensioning sleeve and a wrench pipe section connected to the threaded pipe section, the outer wall of the threaded pipe section is spirally connected to the inner wall of the outer sleeve, and the wrench pipe section is provided with the adjustment part.

[0017] In some examples, the adjustment portion includes a plurality of wrench holes circumferentially arranged on the wrench tube segment.

[0018] In some examples, an outer diameter of the threaded pipe segment is greater than an outer diameter of the tension sleeve.

[0019] In some examples, the inner wall of the outer sleeve is provided with a limit step.

[0020] In some examples, the outer wall of the front portion of the sliding foot shaft is provided with a first thread, the inner wall of the clamping jaw is provided with a second thread, and the first thread is spirally matched with the second thread.

[0021] It should be understood that within the scope of the present invention, the above-mentioned technical features of the present invention and the technical features specifically described below (such as implementation methods) can be combined with each other to form new or preferred technical solutions. Due to space limitations, they will not be described one by one here.

[0022] The beneficial effects of the utility model are as follows: by arranging a tensioning mechanism in the outer sleeve, the slide foot shaft is inserted in the tensioning mechanism and the two ends are inserted from the two ends of the outer sleeve, and the tensioning mechanism can lock or loosen the slide foot shaft inserted therein. When the tensioning mechanism loosens the slide foot shaft, the slide foot shaft can be moved back and forth by rotating the slide foot shaft knob to contact and position with the plate roller. After positioning, the tensioning mechanism is used to lock the positioned slide foot shaft, so as to prevent the slide foot shaft from loosening, so as to ensure the accurate positioning of the initial engraving depth of the engraving needle, thereby improving the engraving quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0024] Figure 1 It is a schematic diagram of the first embodiment of the engraving needle positioning regulator of the electronic engraving machine of the utility model.

[0025] Figure 2 for Figure 1 Schematic diagram of the structure.

[0026] Figure 3 for Figure 1 Schematic cross-section of the structure.

[0027] Figure 4 for Figure 3 Schematic diagram of a part of the structure.

[0028] Figure 5 It is a schematic diagram of the decomposition of the tensioning mechanism.

[0029] Figure 6 It is a cross-sectional schematic diagram of the outer sleeve.

[0030] Reference numerals:

[0031] 100-adjuster, 1-sliding foot shaft, 11-top, 12-first thread, 2-outer sleeve, 21-exposing opening, 22-first contraction inclined surface, 221-tapered hole, 23-limiting hole, 24-limiting step, 25-fourth thread, 26-assembly surface, 271-first accommodating hole, 272-second accommodating hole, 273-third accommodating hole, 3-tensioning mechanism, 31-tensioning sleeve, 311-clamping claw, 3111-second contraction inclined surface, 3112-axial through groove, 3113-second thread, 312-straight tube, 3121-guide groove, 32-pushing sleeve, 321-adjusting part, 3211-wrench hole, 322-threaded pipe section, 3221-third thread, 323-wrench pipe section, 4-sliding foot shaft knob. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0034] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0036] The utility model includes the following embodiments.

[0037] Please refer to Figures 1 to 4This embodiment provides an engraving needle positioning regulator 100 for an electronic engraving machine, comprising a slide foot shaft 1, an outer shaft sleeve 2, a tensioning mechanism 3 and a slide foot shaft knob 4.

[0038] The slide foot shaft 1 is in the shape of a round straight rod, and a tip 11 is provided at the front end of the slide foot shaft 1. The tip 11 is used to abut against the plate roller when positioning the engraving depth.

[0039] The outer sleeve 2 is a hollow round tube sleeve, and the outer wall surface of the outer sleeve 2 is provided with an assembly surface 26, which is used to be mounted on the engraving head of the electronic engraving machine so that the entire engraving needle positioning regulator 100 is fixed on the engraving head. In this embodiment, the assembly surface 26 is provided at the front section of the outer sleeve 2.

[0040] like Figure 1 and Figure 3 As shown, the tensioning mechanism 3 is accommodated in the outer sleeve 2, the slide foot shaft 1 is axially inserted into the tensioning mechanism 3, and the front end of the slide foot shaft 1 can pass through the front end of the outer sleeve 2, and the rear end of the slide foot shaft 1 passes through the rear end of the outer sleeve 1 and is connected to the slide foot shaft knob 4. By rotating the slide foot shaft knob 4, the slide foot shaft 1 can move forward and backward relative to the tensioning mechanism 3, and the tensioning mechanism 3 locks or releases the slide foot shaft 1 to lock or unlock the forward and backward movement of the slide foot shaft 1. That is, in the non-locked state (loosen), the sliding foot shaft knob 4 is rotated, and the sliding foot shaft 1 moves back and forth in the tensioning mechanism 3. At this time, it is equivalent to unlocking the movement of the sliding foot shaft 1 moving back and forth in the tensioning mechanism 3, so that the distance between the tip 11 at the front end of the sliding foot shaft 1 and the front end of the outer sleeve 2 can be adjusted. Because the positioning adjuster 100 and the engraving needle (not shown) of the utility model are both installed on the same engraving head and are basically installed in parallel, the distance between the tip surface of the tip 11 and the two surfaces of the tip surface of the engraving needle can be measured. In this way, rotating the sliding foot shaft knob 4 so that the sliding foot shaft 1 can move back and forth in the tensioning mechanism 3 is equivalent to adjusting the distance between the tip 11 and the end face of the engraving needle, and the tip 11 always abuts against the plate roller, so adjusting the distance between the tip 11 and the end face of the engraving needle is equivalent to adjusting the distance between the engraving needle and the plate roller, that is, adjusting the initial engraving depth of the engraving needle.

[0041] Preferably, a dial is also provided on the sliding foot shaft knob 4 of this embodiment, so that when the sliding foot shaft knob 4 is rotated, the distance between the tip 11 of the sliding foot shaft 1 and the end face of the engraving needle can be checked on the dial, that is, the initial engraving depth of the engraving needle can be intuitively checked.

[0042] When the sliding foot shaft knob 4 is rotated to make the sliding foot shaft 1 move forward and backward in the tensioning mechanism 3, the initial positioning is completed, and then the tensioning mechanism 3 is used to lock the sliding foot shaft 1 in the tensioning mechanism 3, which is equivalent to locking the movement of the sliding foot shaft 1 in the tensioning mechanism 3. At this time, when the sliding foot shaft knob 4 is rotated again, the sliding foot shaft 1 cannot move, or the sliding foot shaft knob 4 cannot be rotated at this time. Because in the positioning process, before the formal engraving, the position of the engraving needle on the engraving head is stationary, after the initial positioning is completed and the top 11 is locked against the sliding foot shaft 1 of the plate roller, the initial engraving depth of the engraving needle is adjusted, and after locking, the sliding foot shaft 1 can be prevented from loosening to ensure the accuracy of the initial engraving depth positioning. At the same time, in the subsequent formal engraving process, the top 11 always keeps in contact with the plate roller to ensure the engraving accuracy during the engraving process. Generally, the tip 11 is made of diamond material to improve wear resistance, but the tip 11 will also wear out after being used for a long time. At this time, it is only necessary to use the tensioning mechanism 3 to loosen and unlock the slide foot shaft 1, and then rotate the slide foot shaft knob 4 in the opposite direction to rotate the slide foot shaft 1 backward out of the outer sleeve 2 to replace the tip 11 or the entire slide foot shaft 1. In this embodiment, because the tensioning mechanism 3 is set in the engraving needle positioning regulator 100, when the engraving needle is adjusted and positioned for the initial engraving depth, the slide foot shaft 1 can be locked to prevent loosening, so as to ensure the positioning accuracy of the initial engraving depth and improve the engraving quality.

[0043] As a way, Figure 1 and Figure 3 As shown, in this embodiment, a clamping claw 311 is disposed at the front of the tensioning mechanism 3 , an adjusting portion 321 is disposed at the rear of the tensioning mechanism 3 , and a revealing opening 21 is opened on the outer sleeve 2 to reveal the adjusting portion 321 .

[0044] The slide foot shaft 1 is spirally connected with the tensioning mechanism 3 in the tensioning mechanism 3, and when the slide foot shaft knob 4 is rotated, the slide foot shaft 1 rotates and moves forward and backward relative to the tensioning mechanism 3. That is, in this embodiment, the slide foot shaft 1 and the tensioning mechanism 3 are spirally connected, and the two are provided with a threaded engagement, so that the slide foot shaft 1 rotates relative to the tensioning mechanism 3 and moves forward and backward relative to the tensioning mechanism 3 during the rotation process. It can be understood that in other embodiments, the slide foot shaft 1 can also be slidably connected with the tensioning mechanism 3 in the tensioning mechanism 3.

[0045] Specifically, Figure 4 As shown, in this embodiment, the outer wall of the front part of the sliding foot shaft 1 is provided with a first thread 12, and the inner wall of the clamping jaw 311 is provided with a second thread 3113. The first thread 12 is screwed together with the second thread 3113, so that the sliding foot shaft 1 can rotate relative to the clamping jaw 311 and move forward and backward.

[0046] In the present invention, when the adjusting portion 321 is rotated or pushed, the clamping jaw 311 of the tensioning mechanism 3 locks or releases the outer wall of the sliding foot shaft 1. That is, the adjusting portion 321 can act on the clamping jaw 311 of the tensioning mechanism 3 by rotating or linearly pushing, so that the clamping jaw 311 opens or closes to lock or release the sliding foot shaft 1.

[0047] Specifically, as an embodiment, Figures 2 to 4 As shown, the tensioning mechanism 3 includes a tensioning sleeve 31 and a propulsion sleeve 32 which are abutted front and rear in the outer sleeve 2, the propulsion sleeve 32 is spirally connected to the outer sleeve 2, the propulsion sleeve 32 is provided with an adjustment portion 321 for rotating the propulsion sleeve 32, the interior of the front end of the outer sleeve 2 is provided with a first contraction slope 22, the front part of the tensioning sleeve 31 is provided with the clamping jaw 311, and the clamping jaw 311 has a second contraction slope 3111 which abuts against the first contraction slope 22.

[0048] In this way, the adjusting portion 321 is rotated, and the propulsion sleeve 32 is spirally rotated relative to the outer sleeve 2 and moves forward. Figure 3 and Figure 4 As shown, the outer sleeve 32 moves to the left, pushing the tension sleeve 31 to move to the left as well. Then, when the tension sleeve 31 moves to the left, the second contraction slope 3111 of the front clamping jaw 311 of the tension sleeve 31 abuts against the first contraction slope 22 of the front end of the outer sleeve 2, so that the clamping jaw 311 gradually retracts and gradually grasps and locks the sliding foot shaft 1. To release, just rotate the adjustment part 321 in the opposite direction, the pushing sleeve 32 moves to the right, and then pushes the tension sleeve 31 to the right, so that the clamping jaw 311 opens.

[0049] Preferably, if Figure 5 As shown, the clamping jaw 311 is a conical tube with a plurality of axial through grooves 3112 distributed circumferentially. The surface of the conical tube has a second contraction slope 3111, and the conical tube is divided into multiple pieces by the circumferentially distributed axial through grooves 3112, so that the conical tube has contraction properties and becomes a clamping jaw.

[0050] like Figure 5 As shown, the tension sleeve 31 further includes a straight tube 312 connected to the large end of the tapered tube, and a guide groove 3121 is provided on the straight tube 312 extending toward the tapered tube. Figure 2 As shown, the outer sleeve 2 is provided with a limit hole 23, and a pin (not shown) is inserted into the guide groove 3121 from the limit hole 23. Because the pin is inserted into the guide groove 3121, the tension sleeve 31 can only move forward and backward along the axial direction of the outer sleeve 2 in the outer sleeve 2 and will not rotate relative to the outer sleeve 2.

[0051] Preferably, if Figure 5As shown, the propulsion sleeve 32 includes a threaded pipe section 322 abutting against the tension sleeve 31 and a wrench pipe section 323 connected to the threaded pipe section 322 . The outer wall of the threaded pipe section 322 is spirally connected to the inner wall of the outer sleeve 2 , and the wrench pipe section 323 is provided with the adjustment portion 321 .

[0052] Specifically, in this embodiment, a third thread 3221 is provided on the outer wall of the threaded tube 322, and a fourth thread 25 is provided on the inner wall of the outer sleeve 2. The third thread 3221 is spirally connected with the fourth thread 25, so that the propulsion sleeve 32 can rotate relative to the outer sleeve 2 and move forward and backward.

[0053] Preferably, the adjusting portion 321 includes a plurality of wrench holes 3211 circumferentially arranged on the wrench tube section 323. When in use, a wrench such as an L-shaped wrench is inserted into the wrench hole 3211 to rotate the propulsion sleeve 32.

[0054] Preferably, if Figure 6 As shown, the inner wall of the outer sleeve 2 is provided with a limiting step 24 , and the limiting step 24 is used to block the threaded pipe section 322 of the propulsion sleeve 32 .

[0055] Furthermore, if Figure 3 Figure 5 As shown, the outer diameter of the threaded pipe section 322 is larger than the outer diameter of the tension sleeve 31, so that the tension sleeve 31 can be quickly installed into the front part of the outer sleeve 2. Figure 6 As shown, the outer sleeve 2 of this embodiment is provided with a tapered hole 221, a first accommodating hole 271, a second accommodating hole 272, and a third accommodating hole 273 from front to back (i.e., from left to right in the figure), and the inner wall surface of the tapered hole 221 forms a first contraction slope 22. The first accommodating hole 271, the second accommodating hole 272, and the third accommodating hole 273 are arranged in a stepped hole with increasing apertures. Among them, the first accommodating hole 271 is used to receive the tension sleeve 31, the second accommodating hole 272 is used to receive the threaded pipe section 322 of the propulsion sleeve 32, and the third accommodating hole 273 is used to receive the wrench pipe section 323 of the propulsion sleeve 32, so as to facilitate the installation of the tension sleeve 31 and the propulsion sleeve 32 in the outer sleeve 2 in sequence.

[0056] The engraving needle positioning regulator 100 of the electronic engraving machine of the utility model is provided with a tensioning mechanism 3 in the outer sleeve 2, and the slide foot shaft 1 is inserted in the tensioning mechanism 2 and the two ends are inserted from the two ends of the outer sleeve 2. The tensioning mechanism 3 can lock or loosen the slide foot shaft 1 inserted therein. When the tensioning mechanism 3 loosens the slide foot shaft 1, the slide foot shaft 1 can be moved forward and backward by rotating the slide foot shaft knob 4 to contact and position with the plate roller. After positioning, the tensioning mechanism 3 is used to lock the positioned slide foot shaft 1, so as to prevent the slide foot shaft 1 from loosening, so as to ensure the accurate positioning of the initial engraving depth of the engraving needle. The accurate positioning ensures the subsequent engraving quality.

[0057] The above description is only an example to clearly illustrate the present invention, and does not limit the patent scope of the present invention. It is impossible to list all implementation methods here. All equivalent structural changes made by using the contents of the technical solution of the present invention under the concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An engraving needle positioning regulator for an electronic engraving machine, characterized in that: It includes a sliding foot shaft, an outer shaft sleeve, a tensioning mechanism and a sliding foot shaft knob; The tensioning mechanism is accommodated in the outer sleeve, the slide foot shaft is axially inserted into the tensioning mechanism, and the front end of the slide foot shaft can pass through the front end of the outer sleeve, and the rear end of the slide foot shaft passes through the rear end of the outer sleeve and is connected to the slide foot shaft knob, and the slide foot shaft can be moved forward and backward relative to the tensioning mechanism by rotating the slide foot shaft knob; The tensioning mechanism locks or releases the slide foot shaft to lock or unlock the forward and backward movement of the slide foot shaft.

2. The engraving needle positioning regulator of the electronic engraving machine according to claim 1, characterized in that: The front part of the tensioning mechanism is provided with a clamping claw, the rear part of the tensioning mechanism is provided with an adjusting part, and the outer sleeve is provided with an exposing opening to expose the adjusting part; The slide foot shaft is spirally connected with the tensioning mechanism in the tensioning mechanism, and when the slide foot shaft knob is rotated, the slide foot shaft rotates relative to the tensioning mechanism and moves forward and backward; When the adjusting part is rotated or pushed, the clamping claws of the tensioning mechanism lock or release the outer wall of the sliding foot shaft.

3. The engraving needle positioning regulator of the electronic engraving machine according to claim 2, characterized in that: The tensioning mechanism includes a tensioning sleeve and a propulsion sleeve abutting against each other in the front and rear of the outer sleeve, the propulsion sleeve is spirally connected to the outer sleeve, the propulsion sleeve is provided with an adjustment portion for rotating the propulsion sleeve, a first contraction inclined surface is provided inside the front end of the outer sleeve, the clamping claw is provided at the front of the tensioning sleeve, and the clamping claw has a second contraction inclined surface abutting against the first contraction inclined surface.

4. The engraving needle positioning regulator of the electronic engraving machine according to claim 3, characterized in that: The clamping jaw is a tapered tube with a plurality of axial through grooves distributed in an annular direction.

5. The engraving needle positioning regulator of the electronic engraving machine according to claim 4, characterized in that: The tension sleeve also includes a straight tube connected to the large end of the tapered tube, the straight tube is provided with a guide groove extending in the direction of the tapered tube, the outer sleeve is provided with a limiting hole, and the pin is inserted into the guide groove from the limiting hole.

6. The engraving needle positioning regulator of the electronic engraving machine according to claim 3, characterized in that: The propulsion sleeve comprises a threaded pipe section abutting against the tension sleeve and a wrench pipe section connected to the threaded pipe section. The outer wall of the threaded pipe section is spirally connected to the inner wall of the outer sleeve, and the wrench pipe section is provided with the adjusting part.

7. The engraving needle positioning regulator of the electronic engraving machine according to claim 6, characterized in that: The adjusting portion includes a plurality of wrench holes circumferentially arranged on the wrench tube section.

8. The engraving needle positioning regulator of the electronic engraving machine according to claim 6, characterized in that: The outer diameter of the threaded pipe section is greater than the outer diameter of the tension sleeve.

9. The engraving needle positioning regulator of the electronic engraving machine according to claim 6, characterized in that: The inner wall of the outer sleeve is provided with a limiting step.

10. The engraving needle positioning regulator of the electronic engraving machine according to claim 2, characterized in that: The outer wall of the front part of the sliding foot shaft is provided with a first thread, and the inner wall of the clamping jaw is provided with a second thread, and the first thread is spirally matched with the second thread.

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