line drawer

Abstract

A line drawing device includes a base with a movable component on top. The movable component is connected to a pen holder and drives the pen holder to move to one side of the base. A line drawing pen is fixed to the pen holder. The base also has a reference portion on the same side as the pen holder and opposite the writing end of the line drawing pen. The central axis of the line drawing pen is horizontally distanced from the reference portion. By moving the line drawing pen with the movable component, the horizontal distance is changed to draw erase reference lines with different indentations.

Description

Technical Field

[0001] This invention belongs to the technical field of shoemaking tools, and in particular refers to a line marker for drawing lines on the midsole of a shoe. Prior Technology

[0002] In general shoe manufacturing, the glue application path is first positioned on the midsole, and then the shoe upper is applied along the glue application path by the shoe upper forming machine and glued to the midsole.

[0003] The industry practice typically involves operators measuring and marking the distance between a pre-defined glue application point and the edge of the shoe midsole using a ruler. These marked points are then connected to form a glue application baseline. However, this method is prone to positional shifts during the connection process, resulting in an uneven or repeatedly redrawn baseline. This affects the accurate judgment of the baseline's actual position during glue application, reducing precision. Furthermore, inconsistent line-drawing standards among operators lead to deviations in glue application positions within the same batch of shoes, causing glue overflow or unstable bonding during the upper bonding process.

[0004] Therefore, how to solve the above-mentioned problems is the primary issue that this invention aims to address. Summary of the Invention

[0005] The main objective of this invention is to provide a line drawing device that uses a base part to abut against the edge of the shoe midsole. By holding the base and moving the line drawing pen, a smooth adhesive reference line is drawn on the shoe midsole. The drawn lines are smooth and fluid, improving the accuracy of the adhesive reference line drawing position.

[0006] The second main objective of this invention is to precisely adjust the horizontal distance between the central axis of the drawing pen and the reference part, which can be used to draw shoe midsoles of different sizes.

[0007] To achieve the aforementioned objectives, the present invention adopts the following technical solution:

[0008] A base for holding by hand;

[0009] A pen holder is used to hold a drawing pen in place.

[0010] A movable component is disposed on the top of the base and connected to the pen holder to drive the pen holder to move to one side of the base;

[0011] A reference part, located on the base and on the same side as the pen seat, is used to abut against the edge of a shoe midsole;

[0012] The writing end of the drawing pen is positioned opposite to the reference part, and the central axis of the drawing pen has a horizontal distance from the reference part. The moving component drives the drawing pen to reciprocate and translate on one side of the base to change the horizontal distance.

[0013] Preferably, the pen holder has a through-hole for inserting and fixing the drawing pen.

[0014] Preferably, the movable assembly has a front fixed seat, a rear fixed seat, and a movable shaft. The front fixed seat and the rear fixed seat are positioned opposite each other and spaced apart on the top of the base, and each has a through hole for the movable shaft to pass through. The movable shaft passes through the front fixed seat and the rear fixed seat and its end protruding from the front fixed seat is connected to the pen holder. The movable shaft is driven by an adjusting member to move linearly, thereby changing the horizontal distance between the central axis of the drawing pen and the reference part.

[0015] Furthermore, the movable shaft has a threaded section and a guide section. The cross-sectional shape of the guide section is rectangular or regular polygonal. The shape of the through hole of the front fixed seat is the same as the cross-sectional shape of the guide section. The movable shaft maintains linear movement by cooperating with the guide section through the through hole of the front fixed seat.

[0016] Furthermore, the outer circumferential surface of the guide section is provided with a dimensional scale to measure and display the horizontal distance between the central axis of the drawing pen and the reference part.

[0017] Preferably, the adjusting member is disposed between the front fixed seat and the rear fixed seat and is screwed into the threaded section.

[0018] Preferably, the reference portion has an upper stop and a lower stop arranged opposite to each other, and the upper stop and the lower stop are spaced apart to form a guide groove, which is used to guide the base to move along the edge of the shoe midsole when fitted onto the edge of the shoe midsole.

[0019] Preferably, the guide groove is provided with an arc-shaped abutment for the edge of the shoe midsole to abut against.

[0020] Furthermore, the upper stop is provided with an opening facing the groove of the drawing pen, so that the writing end of the drawing pen can move inward into the guide groove.

[0021] Compared with the prior art, the present invention has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solution, it mainly uses the reference part to abut against the edge of the shoe midsole to locate the drawing position, and the moving component adjusts the horizontal distance between the central axis of the drawing pen and the reference part, so as to accurately draw the glue-rubbing reference line on shoe midsoles of different sizes.

[0022] The aforementioned objectives and advantages of the present invention can be readily understood from the following detailed description of the selected embodiments and the accompanying drawings. Simple Explanation of the Diagram

[0023] Figure 1 is a schematic diagram of the three-dimensional structure of the drawing pen of the present invention. Figure 2 is a schematic diagram of the exploded structure of the drawing pen of the present invention. Figure 3 is a schematic cross-sectional view of the reference part of the present invention along the transverse axis. Figure 4 is a side view of the drawing pen of the present invention. Figure 5 is a top view of the drawing pen of the present invention in use. Implementation

[0024] As shown in Figures 1 to 5, a preferred embodiment of the line-drawing device of the present invention is provided, which includes a base 1, a pen holder 2, a moving component 3, and a reference portion 4. The base 1 is for hand gripping. The moving component 3 is located on the top of the base 1 and connected to the pen holder 2 to drive the pen holder 2 to move to one side of the base 1. The reference portion 4 is located on the base 1 and on the same side as the pen holder 2, and is used to abut against the edge 61 of a shoe midsole 6. The pen holder 2 has a through-hole 21 for inserting and fixing a drawing pen 5. The writing end 51 of the drawing pen 5 is opposite to the reference portion 4, and there is a horizontal distance T between the central axis Z of the drawing pen 5 and the reference portion 4, so as to draw a glue-rubbing reference line L on the shoe midsole.

[0025] Further explanation: As shown in Figures 1 and 2, the movable assembly 3 has a front fixed seat 31, a rear fixed seat 32, and a movable shaft 33. The front fixed seat 31 and the rear fixed seat 32 are positioned opposite each other and spaced apart on the top of the base 1, each having a through hole 311 and 321 for the movable shaft 33 to pass through. The movable shaft 33 has a guide section 331 and a threaded section 332. The threaded section 332 extends from the through hole 311 of the front fixed seat 31 and passes through the through hole 321 of the rear fixed seat 32. The guide section 331 is connected to the pen holder 2 at its end extending from the front fixed seat 31. An adjusting member 34 is provided between the front fixed seat 31 and the rear fixed seat 32, and the adjusting member 34 is screwed onto the threaded section 332. In this embodiment, the adjusting member 34 is preferably a knob with internal threads, which is sleeved on the moving shaft 33 and screwed into the threaded section 332, so that the moving shaft 33 can be moved horizontally by rotating the adjusting member 34.

[0026] Referring to Figure 2, the cross-sectional shape of the guide section 331 is a regular polygon, and the shape of the through hole 311 of the front fixed seat 31 is the same as the cross-sectional shape of the guide section 331. By cooperating with the through hole 311 of the front fixed seat 31, the moving shaft 33 cannot rotate within the front fixed seat 31 and the rear fixed seat 32, ensuring that the moving shaft 33 maintains linear movement when driven by the adjusting member 34. The cross-sectional shape of the guide section 331 is rectangular or a regular polygon, including equilateral triangles, squares, pentagons, and hexagons. In this embodiment, the cross-sectional shape of the guide section 331 is square, and the shape of the through hole 311 of the front fixed seat 31 is also square.

[0027] Next, as shown in Figures 2 and 3, the reference part 4 is preferably located at the bottom of the base 1 and on the same side as the pen holder 2. The reference part 4 has an upper stop 41 and a lower stop 42 arranged opposite each other, and the upper stop 41 and the lower stop 42 are spaced apart to form a guide groove 43. An arc-shaped abutment part 44 is provided in the guide groove 43. During drawing, as shown in Figures 4 and 5, the guide groove 43 is fitted onto the edge 61 of the shoe midsole 6, and the abutment part 44 abuts against the edge 61 of the shoe midsole 6, so that the vertical distance between any drawing point and the edge 61 is consistent. Because the edge of the midsole 6 is curved, the contact area between the arc-shaped abutment 44 and the edge 61 of the midsole 6 is small, reducing the friction between the base 1 and the midsole 6 as it moves. This allows the base 1 to smoothly conform to the edge 61 of the midsole 6 without forming gaps at the bend, ensuring that any point of the glue application reference line is consistently perpendicular to the edge of the midsole, thus achieving the effect of accurately drawing the glue application reference line.

[0028] To facilitate quick adjustment of the indentation amount for drawing the adhesive application reference line, as shown in Figures 2 and 4, the outer periphery of the guide section 331 is also provided with a size scale 333. By reading the length indicated by the size scale 333 between the pen holder 2 and the front fixed seat 31, the horizontal distance T between the central axis Z of the drawing pen 5 and the reference part 4 can be measured. This horizontal distance T is consistent with the indentation amount W for drawing the adhesive application reference line L on the shoe midsole 6. Specifically, the length D indicated by the size scale 333 of the guide section 331 is the horizontal distance T between the central axis Z of the drawing pen 5 and the outer side of the abutment part 44. Therefore, when using the device, the operator rotates the adjusting member 34 to move the moving shaft 33 according to the indentation amount W, adjusting it until the length D indicated by the size scale 333 is consistent with the preset indentation amount W. This allows for convenient and precise adjustment of the indentation amount W, meeting the needs of drawing the adhesive application reference line L on shoe midsoles of different sizes and shapes.

[0029] As further explained in Figures 1 and 3, the upper stop 41 is provided with a through groove 411 with an opening facing the drawing pen 5, so that the writing end 51 of the drawing pen 5 can move inward along the through groove 411 into the guide groove 43, so that the drawing pen 5 can draw the glue-wiping reference line L with a smaller inward shrinkage W, which meets the inward shrinkage requirements for drawing the glue-wiping reference line of shoe midsoles of different sizes.

[0030] In practical application, please refer to Figures 4 and 5. Take a shoe midsole 6 and calculate the inward reduction W of the glue-applying reference line L based on the size of the shoe midsole 6. The inward reduction W refers to the vertical distance between any point of the glue-applying reference line L on the shoe midsole and the edge 61 of the shoe midsole 6. Rotate the adjusting member 34 according to the inward reduction W until the length D read by the size scale 333 is consistent with the inward reduction W, that is, the horizontal distance T between the central axis Z of the drawing pen 5 and the outer side of the abutment part 44 is consistent with the inward reduction W. Then, the guide groove 43 of the reference part 4 is fitted onto the edge 61 of the shoe midsole 6 and the abutment part 44 abuts against the edge 61 of the shoe midsole 6, and the writing end 51 of the drawing pen 5 is adjusted to contact the surface of the shoe midsole 6. Finally, hold the base 1 and move it along the edge 61 of the shoe midsole 6, and keep the abutting part 44 in contact with the edge 61 of the shoe midsole 6, so that the required length of the glue-rubbing reference line L can be drawn on the shoe midsole 6.

[0031] In summary, the line marker provided by the present invention achieves the following improvements:

[0032] First, the invention accurately draws the glue application baseline. The baseline part is fitted onto the edge of the shoe midsole, and the abutting part abuts against the edge of the shoe midsole. This ensures that the distance between the writing end of the drawing pen and the edge of the shoe midsole remains consistent during the drawing process, thus achieving the effect of accurately drawing the glue application baseline.

[0033] Secondly, the drawing position of the glue application reference line can be flexibly changed; the drawing device of the present invention uses the reference part to abut against the edge of the shoe midsole, and adjusts the distance between the drawing pen and the reference part by the moving component to change the amount of indentation of the drawing, thereby meeting the glue application reference line drawing requirements of different shoe midsole and heel counters.

[0034] However, the above embodiments are only used to illustrate the present invention and are not intended to limit the present invention. Therefore, any changes in numerical values ​​or substitutions of equivalent elements should still fall within the scope of the present invention.

[0035] In conclusion, since this invention can clearly demonstrate to those skilled in the art that it can achieve the aforementioned objectives, it complies with the provisions of the Patent Law, and therefore an application is filed in accordance with the law.

[0036] 1: Base 2: Pen holder 21: Socket 3: Mobile Components 31: Front mounting bracket 32: Rear mounting bracket 311, 321: Through holes 33: Moving axis 331: Guiding Section 332: Threaded section 333: Size Scale 34: Adjusting component 4: Reference section 41: Upper part 411: Through slot 42:Lower block 43: Guide groove 44: Reliance Department 5: Drawing pen 51: Writing end 6: Shoe midsole 61: Edge Z: Central axis W: Inward contraction L: Adhesive application baseline D: Length T: Horizontal distance

Claims

1. A line marker, comprising: a base for hand gripping; a pen holder for fixing a line marker; a movable component disposed on the top of the base and connected to the pen holder for driving the pen holder to move on one side of the base; a reference portion disposed on the base and on the same side as the pen holder for abutting against the edge of a shoe midsole, the reference portion having an upper stop and a lower stop disposed opposite to each other, the upper stop and the lower stop being spaced apart to form a guide groove for guiding the base to move along the edge of the shoe midsole; wherein... The writing end of the drawing pen is positioned opposite to the reference part, and the central axis of the drawing pen has a horizontal distance from the reference part. The moving component drives the drawing pen to reciprocate and translate on one side of the base to change the horizontal distance.

2. The line drawer as described in claim 1, wherein, The pen holder has a through-hole for inserting and securing the drawing pen.

3. The line drawer as described in claim 1, wherein, The movable component has a front fixed seat, a rear fixed seat, and a movable shaft. The front fixed seat and the rear fixed seat are positioned opposite each other and spaced apart on the top of the base, and each has a through hole for the movable shaft to pass through. The movable shaft passes through the front fixed seat and the rear fixed seat and its end protruding from the front fixed seat is connected to the fixed seat. The movable shaft is driven by an adjusting member to move linearly, thereby changing the horizontal distance between the central axis of the drawing pen and the reference part.

4. The line drawer as described in claim 3, wherein, The movable shaft has a threaded section and a guide section. The cross-sectional shape of the guide section is rectangular or regular polygonal. The shape of the through hole of the front fixed seat is the same as the cross-sectional shape of the guide section. The movable shaft maintains linear movement by cooperating with the guide section through the through hole of the front fixed seat.

5. The line drawer as described in claim 4, wherein, The outer circumferential surface of the guide section is provided with a dimensional scale to measure and display the horizontal distance between the central axis of the drawing pen and the reference part.

6. The line drawer as described in claim 4, wherein, The adjusting element is located between the front fixed seat and the rear fixed seat and is screwed into the threaded section.

7. The line drawer as described in claim 1, wherein, The guide groove has an arc-shaped abutment for the edge of the shoe midsole to abut.

8. The line drawer as described in claim 1, wherein, The upper stop has an opening facing the groove of the drawing pen, so that the writing end of the drawing pen can move inward into the guide groove.

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