Middle and rear upper gluing process

Abstract

The invention discloses a shoe middle and rear upper gluing process. The process comprises the following steps that 1, a scriber draws a glue wiping base line on a shoe midsole along the edge of the shoe midsole according to the preset inward shrinkage amount; 2, fixing a shoe insole to a shoe tree and then fixing the shoe insole to a middle and rear upper forming machine; step 3, instructing a middle and rear upper forming machine to establish a frictioning track by the frictioning base line; 4, the middle and rear upper forming machine conducts glue wiping according to the glue wiping track, and the vamp and the shoe insole are subjected to upper bonding and fixing. Therefore, the frictioning track is established by referring to the frictioning base line pre-drawn on the shoe insole, so that the sampling position for establishing the frictioning track is consistent with the actual frictioning position, the accuracy of establishing the frictioning track is improved, relying on visual inspection is not needed, and the convenience of establishing the frictioning track is improved.

Description

Technical Field

[0001] The present invention relates to the technology in the field of shoe manufacturing, and particularly to a process for gluing the middle and rear parts of a shoe upper. Background Art

[0002] In the general process of shoe manufacturing, after the shoe upper is fixed to the midsole of the shoe, the shoe upper can be further fixed to the sole. Currently, in the industry, mainly the middle and rear part machine of the shoe upper machine disclosed in the design patent No. TWD180938 of Taiwan, China is used to apply glue on the midsole of the shoe and then fix the shoe upper to the midsole. To ensure that the glue application position of the middle and rear part forming machine remains consistent, usually the glue application trajectory is set before glue application, and then the middle and rear part forming machine completes glue application and the fixing of the joint along the glue application trajectory.

[0003] Traditional middle and rear part forming machines do not have a device for assisting in drawing the glue application trajectory. For example, the glue feeding mechanism of the shoe upper machine disclosed in the new patent No. TWM475847 of Taiwan, China and the servo trajectory glue application device of the middle and rear part shoe machine disclosed in the new patent No. TWM508229 of Taiwan, China. The operator can only visually adjust the mechanism to set the glue application trajectory. The formed glue application trajectory is not only rough and not smooth, and there is also a large positioning deviation in manual visual inspection, resulting in the inability to keep the position of the glue application trajectory consistent. When fixing the joint, it is easy to cause glue overflow or insufficient glue for bonding due to the deviation of the glue application position, affecting the product quality.

[0004] In the industry, there appears a method of using a screen to assist in drawing a virtual glue application trajectory. The midsole of the shoe is placed in front of the human-machine screen, and the glue application trajectory is set by poking points according to the shape of the midsole of the shoe. Although the formed glue application trajectory is smooth and fluent, limited by the size of the human-machine screen, there are problems of positioning deviation and inconvenient operation. Another example is the visual servo control system for the glue application trajectory of the middle and rear parts of the shoe disclosed in the new patent No. TWM514756 of Taiwan, China. The midsole plate of the shoe is placed in front of the camera, and the image of the workpiece is obtained by taking a photo, and the glue application trajectory is automatically formed by the computer. Although the formed glue application trajectory is the smoothest, the cost of the whole set of equipment is high, which does not meet the requirements of production cost control. However, whether the glue application trajectory is drawn through the screen or automatically drawn by computer photography, it is all through image for trajectory positioning, rather than directly sampling and positioning on the physical object, resulting in a deviation between the actual glue path formed by glue application and the preset glue application trajectory.

[0005] Therefore, it is necessary to study a new technical solution to solve the above problems. Summary of the Invention

[0006] In view of this, in response to the deficiencies existing in the prior art, the main object of the present invention is to provide a process for gluing the middle and rear parts of a shoe. By using a line drawing device to directly draw a glue wiping baseline on the insole of the shoe, fixing the insole of the shoe and teaching the system of the middle and rear part forming machine with the glue wiping baseline to learn and establish a glue wiping trajectory for accurately positioning the glue wiping and fixing the upper of the shoe, improving the accuracy of sampling and positioning the glue wiping baseline on the insole of the shoe, improving the product yield, and saving production costs.

[0007] To achieve the above object, the present invention adopts the following technical solutions: A process for gluing the middle and rear parts of a shoe includes the following steps: Step 1, draw a glue wiping baseline; use a line drawing device to draw a glue wiping baseline on the insole of the shoe along the edge of the insole of the shoe according to a preset shrinking amount. The line drawing device can adjust the shrinking amount as required to change the position of the glue wiping baseline; Step 2, fix the insole of the shoe; the insole of the shoe on which the glue wiping baseline has been drawn is fixed to a shoe last and then fixed in a middle and rear part forming machine with a glue wiping mechanism; Step 3, establish a glue wiping trajectory; the glue wiping baseline teaches the system of the middle and rear part forming machine to learn and establish a glue wiping trajectory; Step 4, glue wiping and joining the upper; after the middle and rear part forming machine wipes the glue along the glue wiping baseline according to the established glue wiping trajectory, the upper of the shoe is joined and fixed to the insole of the shoe.

[0008] As a preferred solution, the line drawing device has a base, the base is provided with a moving mechanism, the moving mechanism fixes a line drawing pen and drives the line drawing pen to reciprocate horizontally on one side of the base. The base is provided with a reference part on the same side as the line drawing pen, the reference part is arranged opposite to the writing end of the line drawing pen, the reference part abuts against the edge of the insole of the shoe and the distance between the line drawing pen and the reference part is adjusted by the moving mechanism to change the drawing position of the glue wiping baseline.

[0009] As a preferred solution, the moving mechanism includes a front fixing seat, a rear fixing seat and a moving part. The front fixing seat and the rear fixing seat are arranged opposite to each other front and back on the top of the base. The moving part has a pen seat for fixing the line drawing pen. One side of the pen seat extends horizontally with a connecting rod. The outer surface of the connecting rod is provided with a threaded section, and the threaded section passes through the front fixing seat and the rear fixing seat. A knob is arranged between the front fixing seat and the rear fixing seat and is screwed with the connecting rod. The rotation of the knob drives the moving part to move linearly to change the distance between the line drawing pen and the reference part.

[0010] As a preferred solution, the connecting rod has a rectangular section located between the pen holder and the threaded section, and the cross-sectional shape of the through hole of the front fixing seat is the same as that of the rectangular section. The through hole of the front fixing seat cooperates with the rectangular section to keep the connecting rod moving linearly.

[0011] As a preferred solution, the outer peripheral surface of the rectangular section is provided with dimensional scales to measure and display the distance between the writing end of the marking pen and the reference part.

[0012] As a preferred solution, the reference part has an upper blocking part and a lower blocking part which are arranged at intervals up and down, so that a guiding groove is formed between the upper blocking part and the lower blocking part for sleeving on the edge of the shoe midsole to guide the base to move along the edge of the shoe midsole.

[0013] As a preferred solution, an arc-shaped abutting part is arranged in the guiding groove for the edge of the shoe midsole to abut against.

[0014] As a preferred solution, the upper blocking part is provided with a through groove with an opening facing the marking pen for the writing end of the marking pen to move inwards into the guiding groove.

[0015] As a preferred solution, in step 3, after the system of the middle and rear vamp forming machine controls its rubber spreading mechanism to set positions point by point from the starting point of the rubber spreading baseline, it automatically forms the rubber spreading trajectory online.

[0016] Compared with the prior art, the present invention has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solutions, it mainly pre-draws the rubber spreading baseline by a marking device, and the operator directly teaches the system of the middle and rear vamp forming machine to establish the rubber spreading trajectory based on the rubber spreading baseline, ensuring that the rubber spreading trajectory is consistent with the position of the rubber spreading baseline, and precisely spreading rubber to solve the problems of rubber overflow or poor adhesion, and improving the product yield.

[0017] To more clearly illustrate the structural features and functions of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic flow chart of the steps of the shoe middle and rear vamp gluing process of the embodiment of the present invention; Figure 2 is a three-dimensional view of a marking device of the embodiment of the present invention; Figure 3 is an exploded view of a marking device of the embodiment of the present invention; Figure 4 is a transverse axial sectional view of the reference part of a marking device of the embodiment of the present invention; Figure 5It is a side view of a line drawing tool according to an embodiment of the present invention; Figure 6 It is a top view of the usage state of a line drawing tool according to an embodiment of the present invention.

[0019] Explanation of the attached drawing reference numerals: base 1, moving mechanism 2, front fixing seat 21, rear fixing seat 22, through hole 211, through hole 221, moving member 23, pen holder 231, connecting rod 232, threaded section 233, rectangular section 234, dimensional scale 235, knob 24, reference portion 3, upper blocking portion 31, through groove 311, lower blocking portion 32, guiding groove 33, abutting portion 34, line drawing pen 4, writing end 41, shoe insole 5, edge 51, retraction amount W, rubber wiping baseline L, length D, distance T. Detailed implementation manners

[0020] Please refer to Figures 1 to 6 as shown, which shows the specific structure of the embodiment of the present invention.

[0021] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0022] As Figure 1 shown, a shoe back heel rubber coating process includes the following steps: Step 1, drawing a rubber wiping baseline; using a line drawing tool to draw a rubber wiping baseline on the shoe insole along the edge of the shoe insole according to a preset retraction amount, and the line drawing tool can adjust the retraction amount as needed to change the position of the rubber wiping baseline; Further explanation, the retraction amount refers to the vertical distance between any drawing point of the rubber wiping baseline on the shoe insole and the edge of the shoe insole. Drawing the rubber wiping baseline on the shoe insole according to the preset retraction amount means that the vertical distance between any drawing point of the rubber wiping baseline on the shoe insole and the edge of the shoe insole remains unchanged, so as to draw a smooth and straight rubber wiping baseline. Therefore, by changing the retraction amount, that is, changing the position of the rubber wiping baseline, it is possible to meet the requirement of drawing the rubber wiping baseline on shoe insoles of different sizes and shapes.

[0023] Step 2, fixing the shoe insole; the shoe insole on which the rubber wiping baseline has been drawn is fixed to a shoe last and then fixed in a back heel molding machine with a rubber coating mechanism; Further explanation, after the shoe insole is fixed at the processing position, step 3 is then executed to ensure that the position where the rubber wiping track is established is the same as the actual rubber coating position, and to avoid the offset of the glue path formed by subsequent rubber coating caused by position deviation.

[0024] Step 3, establish the rubber rubbing trajectory; the rubber rubbing baseline teaches the system of the middle and rear vamp forming machine to learn and establish a rubber rubbing trajectory; Further explanation, after the system of the middle and rear vamp forming machine controls its rubber rubbing mechanism to set positions point by point from the starting point of the rubber rubbing baseline, it automatically forms the rubber rubbing trajectory online. The rubber rubbing trajectory is established based on the pre-drawn rubber rubbing baseline as a reference, and has better accuracy compared with the traditional visual method of drawing the rubber rubbing trajectory. And compared with drawing by screen point selection and automatic drawing by image capture, it solves the problem of rubber path deviation caused by the difference between the established position of the rubber rubbing trajectory and the actual rubber rubbing position.

[0025] Step 4, rubber rubbing and joining the upper; after the middle and rear vamp forming machine rubs rubber along the rubber rubbing baseline according to the established rubber rubbing trajectory, it joins and fixes a vamp to the shoe midsole.

[0026] Further explanation, establishing an accurate rubber rubbing trajectory effectively solves the problems of glue overflow or insufficient glue application at the joining position caused by the deviation of the rubber rubbing position, and improves the product yield.

[0027] Among them, as Figure 2 and Figure 3 shown, the line drawer has a base 1, a moving mechanism 2 is provided at the top of the base 1, and a reference part 3 is provided at one side of its bottom. The moving mechanism 2 has a front fixing seat 21, a rear fixing seat 22 and a moving part 23. The front fixing seat 21 and the rear fixing seat 22 are respectively provided with a through hole 211, 221 and are arranged opposite to each other front and back on the top of the base 1. The moving part 23 has a pen holder 231 and a connecting rod 232 horizontally extending from one side of the pen holder 231. A drawing pen 4 is fixed to the pen holder 231. A threaded section 233 is provided on the outer surface of the connecting rod 232, and the threaded section 233 passes through the front fixing seat 21 and the rear fixing seat 22, so that the pen holder 231 and the reference part 3 are on the same side and the writing end 41 of the drawing pen 4 is arranged opposite to the reference part 3. A knob 24 is arranged between the front fixing seat 21 and the rear fixing seat 22 and is screwed with the connecting rod 232, so that the knob 24 can rotate on the threaded section 233 to drive the connecting rod 232 to move.

[0028] Special note, as Figure 3As shown, the connecting rod 232 has a rectangular section 234 that is respectively connected to the pen holder 231 and the threaded section 233. The cross-sectional shape of the rectangular section 234 is rectangular, and the cross-sectional shape of the through hole 211 of the front fixing seat 21 is the same as that of the rectangular section 234. The through hole 211 of the front fixing seat 21 cooperates with the rectangular section to limit the connecting rod 232, so that the connecting rod 232 reciprocates and translates according to the rotation direction of the knob 24, thereby driving the drawing pen 4 fixed to the pen holder 231 to move, so as to change the position between the drawing pen 4 and the reference part 3, that is, adjust the retraction amount W of the drawn rubber scraping baseline L, achieving the effect of adjusting the retraction amount W as required to change the position of the rubber scraping baseline.

[0029] In addition, the reference part 3 has an upper stop part 31 and a lower stop part 32 that are spaced apart from each other up and down, so as to form a guide groove 33 between the upper stop part 31 and the lower stop part 32 for sleeving on the edge of the shoe midsole and guiding the base 1 to move along the edge of the shoe midsole. Among them, the upper stop part 31 is provided with a through groove 311 with an opening facing the drawing pen 4, so that the writing end 41 of the drawing pen 4 can move inwards into the guide groove 33, and the rubber scraping baseline L can be drawn with a smaller retraction amount W, which is suitable for small-sized shoe midsoles. Please refer to FIGS. 2 to 4. An abutting part 34 protruding towards the drawing pen 4 in an arc shape is further provided in the guide groove 33. During drawing, as shown in FIGS. 5 and 6, the guide groove 33 of the reference part 3 is sleeved on the edge 51 of the shoe midsole 5 and abuts against the edge 51 of the shoe midsole 5 with the abutting part 34. Since the edge 51 of the shoe midsole 5 is curved, the contact area between the arc-shaped abutting part 34 and the edge 51 of the shoe midsole 5 is small, reducing the friction between the base and the shoe midsole when the base moves, making the movement of the base 1 smoother. Furthermore, when the base 1 moves, the edge 51 of the shoe midsole 5 remains abutted against the abutting part 34 and no gap is formed at the curved part, ensuring that the vertical distance (i.e., the retraction amount W) between the edge 51 of the shoe midsole 5 and any drawing point of the rubber scraping baseline L is consistent, achieving the effect of accurately drawing the rubber scraping baseline L.

[0030] To facilitate the user to quickly adjust the retraction amount, as Figure 5As shown, a dimensional scale 235 for indicating the length is further provided on the outer peripheral surface of the rectangular section 234 of the connecting rod 232. The length D read through the dimensional scale 235 is equal to the distance T between the writing end 41 of the marking pen 4 and the abutting portion 34 of the reference portion 3. Therefore, by reading the length indicated by the dimensional scale 235 between the pen holder 231 and the front fixing seat 21, the user can know the distance T between the writing end 41 of the marking pen 4 and the abutting portion 34. This distance T is the retraction amount W for drawing the buffing baseline L on the shoe midsole 5. Therefore, the user rotates the knob 24 to move the linkage rod 232 and adjusts it until the scale reading of the dimensional scale 235 is consistent with the preset retraction amount W, and then it can be used, which is convenient for accurately adjusting the retraction amount W and meets the requirements for drawing the buffing baseline on shoe midsoles of different sizes and shapes.

[0031] In summary, the shoe backstay gluing process provided by the present invention can achieve the following improvement effects: First, accurately establish the buffing trajectory; the marking device of the present invention pre-draws a buffing baseline on the shoe midsole, and then combines the shoe midsole with the shoe last and fixes it on the shoe backstay forming machine, and directly teaches the shoe backstay forming machine to establish a buffing trajectory on the shoe midsole according to the buffing baseline, that is, the buffing trajectory teaching position is consistent with the actual buffing position, there is no problem of buffing trajectory deviation caused by the position deviation of the conventional technology, and it is not necessary to rely entirely on visual inspection, which improves the convenience of establishing the buffing trajectory and achieves the effect of accurately establishing the buffing trajectory.

[0032] Second, flexibly change the drawing position of the buffing baseline; the marking device of the present invention abuts the reference portion against the edge of the shoe midsole, and adjusts the distance between the marking pen and the reference portion through the moving mechanism to change the drawn retraction amount, so as to meet the requirements for drawing the buffing baseline of different shoe backstays.

[0033] Third, save production costs; the present invention does not need to additionally build an image recognition structure in the shoe backstay forming machine, reduces the purchase cost and maintenance cost of production equipment, and has a simple operation. The operator can quickly get started after simple training, reducing the time cost and labor cost of training, and achieving the effect of saving production costs.

[0034] The above is only a preferred embodiment of the present invention, and does not impose any limitation on the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A process for gluing the rear part of a shoe, characterized in that, It includes the following steps: Step 1, draw the rubber rubbing baseline; use a line drawing tool to draw a rubber rubbing baseline on the shoe midsole along the edge of the shoe midsole according to a preset inward shrinkage amount. The line drawing tool can adjust the inward shrinkage amount as required to change the position of the rubber rubbing baseline; Step 2, fix the shoe midsole; the shoe midsole with the rubber rubbing baseline drawn is fixed on the shoe last and then fixed in a mid-rear upper forming machine with a rubber rubbing mechanism; Step 3, establish the rubber rubbing trajectory; the rubber rubbing baseline teaches the system of the mid-rear upper forming machine to learn and establish a rubber rubbing trajectory; Step 4, rubber rub and bond the upper; after the mid-rear upper forming machine rubber rubs along the rubber rubbing baseline according to the established rubber rubbing trajectory, bond and fix the upper and the shoe midsole.

2. The gluing process for the rear upper of a shoe according to claim 1, wherein, The line drawing tool has a base, the base is provided with a moving mechanism, the moving mechanism fixes the line drawing pen and drives the line drawing pen to reciprocate horizontally on one side of the base. The base is provided with a reference part on the same side as the line drawing pen, the reference part is arranged opposite to the writing end of the line drawing pen, the reference part abuts against the edge of the shoe midsole, and the distance between the line drawing pen and the reference part is adjusted by the moving mechanism to change the drawing position of the rubber rubbing baseline.

3. The mid-back gluing process of a shoe according to claim 2, characterized in that, The moving mechanism includes a front fixing seat, a rear fixing seat and a moving part. The front fixing seat and the rear fixing seat are arranged opposite to each other front and rear on the top of the base. The moving part has a pen holder for fixing the line drawing pen. One side of the pen holder extends horizontally with a connecting rod. The outer surface of the connecting rod is provided with a threaded section, and the threaded section passes through the front fixing seat and the rear fixing seat. A knob is arranged between the front fixing seat and the rear fixing seat and is screwed with the connecting rod. The rotation of the knob drives the moving part to move linearly to change the distance between the line drawing pen and the reference part.

4. The gluing process for the rear part of the shoe upper according to claim 3, characterized in that, The connecting rod has a rectangular section with a rectangular cross-section shape and is located between the pen holder and the threaded section. The cross-section shape of the through hole of the front fixing seat is the same as the cross-section shape of the rectangular section. The through hole of the front fixing seat cooperates with the rectangular section to keep the connecting rod moving linearly.

5. A process for gluing the rear upper part of a shoe according to claim 4, characterized in that, The outer peripheral surface of the rectangular section is provided with a dimension scale to measure and display the distance between the writing end of the line drawing pen and the reference part.

6. The adhesive process for the rear upper of a shoe according to claim 2, characterized in that, The reference part has an upper blocking part and a lower blocking part which are arranged at intervals up and down relatively, so that a guide groove is formed between the upper blocking part and the lower blocking part for sleeving on the edge of the shoe midsole to guide the base to move along the edge of the shoe midsole.

7. The gluing process for the rear upper of a shoe according to claim 6, characterized in that, An arc-shaped abutting part is arranged in the guide groove for the edge of the shoe midsole to abut against.

8. The gluing process for the rear upper of a shoe according to claim 6, wherein, The upper blocking part is provided with a through groove with an opening facing the line drawing pen for the writing end of the line drawing pen to move inward into the guide groove.

9. The process for gluing the rear part of the shoe upper according to claim 1, characterized in that, In step 3, after the system of the mid-rear upper forming machine controls its rubber rubbing mechanism to set positions point by point from the starting point of the rubber rubbing baseline, it automatically forms the rubber rubbing trajectory by online connection.

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