Rubber pen structure of toe lasting machine and toe lasting machine

Abstract

The utility model discloses a glue pen structure of a toe lasting machine and the toe lasting machine, the glue pen structure of the toe lasting machine comprises a body, the body is provided with a fixed seat, the fixed seat is provided with a channel, the channel penetrates through the fixed seat along an axial direction and is communicated with a glue outlet nozzle arranged at the front end of the fixed seat, a glue strip pipeline is further arranged in the fixed seat and is communicated with the channel, and the glue strip pipeline is communicated with the channel. A channel is arranged on the fixed seat, a rubber strip can penetrate into the channel, a heater is inserted into the fixed seat and heats the fixed seat, so that the rubber strip in the rubber strip pipeline is melted into a glue solution and then flows out of the glue outlet nozzle through the channel, an ejector pin penetrates into the channel and is driven by a driving component to reciprocate along the axial direction of the channel so as to open or close the glue outlet nozzle, and the effect of preventing the glue solution from overflowing is achieved.

Description

Technical Field

[0001] This utility model relates to the field of shoe manufacturing machinery, and in particular to a glue pen structure for a shoe upper and a shoe upper machine. The glue pen structure is mainly used for applying glue to the shoe upper, specifically referring to a glue pen structure for a shoe upper machine that can prevent glue overflow. Background Technology

[0002] In common shoe manufacturing processes, the sole is first cut and then glue is applied to the outside of the sole. The adhesive properties of the glue are used to bond the sole and the upper together. For example, the commonly used forefoot gluing device disclosed in patent document TWI671026 involves a glue strip entering a glue strip inlet and then being heated to a certain temperature by an electric heating element. The glue strip melts into liquid and flows out from the glue outlet to perform the gluing process.

[0003] During production, operators often need to remove the glued soles from the standby position before replacing them with soles to be glued. However, in conventional forefoot glue application devices, the heating element continuously heats the chamber after startup, often resulting in glue overflowing from the nozzle during standby. This wastes glue and can lead to uneven glue application due to insufficient glue. The overflowing glue not only easily seeps into the machine's mounting gaps and is difficult to clean, but also solidifies on the nozzle's outer surface, affecting the uniformity of the application. Furthermore, the constantly overflowing glue, after cooling and solidifying, is more likely to clog the nozzle, requiring frequent unclogging or even replacement, increasing maintenance frequency and resulting in high maintenance costs.

[0004] Furthermore, conventional glue heads have only one glue outlet, and the large diameter of this outlet results in a large and uneven glue output. This causes excess glue to overflow from the side of the sole when bonding with the shoe upper, requiring manual scraping to remove the overflowing glue. This increases the production process, affecting production efficiency and damaging the appearance of the finished product.

[0005] Therefore, it is necessary to research a new technical solution to address the above problems. Utility Model Content

[0006] In view of this, the present invention addresses the deficiencies of the existing technology and its main purpose is to provide a glue pen structure for a front-up machine and a front-up machine, which controls the opening or closing of the glue nozzle by a pin, effectively solving the problem of glue overflow caused by continuous heating and melting of the glue strip in standby mode.

[0007] The secondary objective is to provide a glue pen structure for a front-applying machine and a front-applying machine, which has at least two glue outlets set with a glue nozzle, and the two glue outlets are set separately in opposite directions to make the glue application more uniform.

[0008] Another objective is to provide a glue pen structure for a gluing machine and a gluing machine, wherein the pneumatically driven ejector pin moves to close or open the glue nozzle, and the overall structure is lightweight and space-saving.

[0009] To achieve the above objectives, the present invention adopts the following technical solution:

[0010] A glue pen structure for a front-end gluer includes a body, the body having a fixing seat, wherein the fixing seat has:

[0011] A channel extends through the fixed base along an axial direction and connects to a dispensing nozzle located at the front end of the fixed base;

[0012] A pin is inserted into the channel and is driven by a drive component to reciprocate along the axis of the channel to open or close the dispensing nozzle.

[0013] A rubber strip tube is disposed inside the fixed base and connected to the channel for inserting a rubber strip;

[0014] A heater is inserted into the fixed base and heats the fixed base, causing the rubber strip in the rubber strip channel to melt into liquid adhesive, which then flows out from the dispensing nozzle through the channel.

[0015] As a preferred embodiment, the front end of the dispensing nozzle has a main dispensing port connected to the channel and two branch dispensing ports connected to the main dispensing port. The two branch dispensing ports extend in opposite directions from the connection point with the main dispensing port to the front end of the dispensing nozzle. The adhesive in the channel flows out through the two branch dispensing ports, making the adhesive application more uniform.

[0016] As a preferred embodiment, the channel includes a sol channel and an installation channel for assembling the drive assembly. The sol channel is connected to the adhesive strip channel for storing and guiding the adhesive liquid. A sealing ring is provided at the connection between the sol channel and the installation channel to prevent the adhesive liquid from overflowing from the sol channel to the installation channel.

[0017] As a preferred embodiment, the drive assembly has a long tube inserted into the mounting channel and a chamber communicating with the long tube. The tail end of the ejector pin extends through the long tube into the chamber and is engaged with an elastic drive member. The chamber is connected to a gas supply channel, through which gas is supplied to the chamber to act on the elastic drive member to drive the ejector pin to move.

[0018] As a preferred embodiment, the long tube has a small diameter section and a large diameter section, and a stepped edge is formed at the connection between the small diameter section and the large diameter section. The elastic drive member has an elastic element set on the ejector pin and is connected to the tail end of the ejector pin with a force-receiving part, so that one end of the elastic element abuts against the force-receiving part and the other end abuts against the stepped edge. The force-receiving part divides the chamber into a displacement space and a gas space, and the ejector pin is moved by controlling the gas pressure in the gas space.

[0019] As a preferred embodiment, the displacement space is provided with at least one through hole connecting to the outside, so as to discharge gas in the displacement space and reduce compression resistance.

[0020] As a preferred embodiment, a control valve connector is provided at the air inlet of the air passage for connecting a control valve that controls the input and output of gas.

[0021] A gluing machine that uses the glue pen structure of a gluing machine as described in any of the preceding items.

[0022] Compared with the prior art, this utility model has significant advantages and beneficial effects. Specifically, as can be seen from the above technical solution, it mainly solves the problem of glue overflow caused by continuous heating and melting of the glue strip in standby mode by designing the fixing base with a channel, a pin, a glue strip channel and a heater. The pin is driven by a driving component to move back and forth along the axial direction of the channel to open or close the glue outlet. Furthermore, by closing or opening the main glue outlet with the pin, when changing the processed parts or turning off the heater and the residual heat continues to melt the glue strip, the pin closes the main glue outlet to prevent the glue in the melting channel from overflowing and seeping into the gaps of the surrounding parts, and also to prevent the residual glue from solidifying and clogging the glue outlet, thus effectively preventing glue overflow. Moreover, the glue outlet is connected to the main glue outlet by two branch glue outlets to form a Y-shaped glue outlet channel, which distributes the glue evenly on the sole of the shoe, avoiding glue concentration and glue overflow during bonding, and making the glue application more uniform.

[0023] Furthermore, the elastic element is moved by the change in air pressure within the gas space to close the dispensing nozzle. The structure is simple and lightweight, and does not increase the burden of moving the glue pen in the device.

[0024] To more clearly illustrate the structural features and effects of this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0025] Figure 1 This is a perspective view of the glue pen structure of the front-end machine according to an embodiment of the present utility model;

[0026] Figure 2 This is another angle view of the glue pen structure of the front gluing machine according to an embodiment of the present utility model;

[0027] Figure 3 This is a partial cross-sectional view of the dispensing nozzle in the open state according to an embodiment of the present invention;

[0028] Figure 4 This is a partial cross-sectional view of the nozzle in a closed state according to an embodiment of the present invention.

[0029] Figure labeling: Fixing base 200, channel 1, molten adhesive channel 11, mounting channel 12, sealing ring 13, ejector pin 2, adhesive strip pipe 3, heater 4, dispensing nozzle 5, main dispensing port 51, branch dispensing port 52, drive assembly 6, long tube section 61, small diameter section 611, large diameter section 612, step 613, chamber 62, displacement space 621, gas space 622, through hole 623, elastic drive component 63, elastic component 631, force-bearing part 632, air passage 64, air inlet 641, control valve connector 65. Detailed Implementation

[0030] Please refer to Figures 1 to 4 As shown, it illustrates the specific structure of an embodiment of the present invention.

[0031] In the description of this utility model, it should be noted that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0032] As shown in Figures 1 and 2, a glue pen structure for a front-end gluing machine includes a body 100, which has a fixing seat 200. A side section along section line A shown in Figure 2, as shown in Figure 3, reveals that the fixing seat 200 has a channel 1, a ejector pin 2, a glue strip tube 3, and a heater 4.

[0033] As shown in Figure 3, the channel 1 extends through the fixing base 200 along an axial direction and connects to a dispensing nozzle 5 located at the front end of the fixing base 200. The channel 1 includes a melting channel 11 and an installation channel 12. The adhesive strip channel 3 is located inside the fixing base 200 and connects to the melting channel 11 for inserting an adhesive strip. The ejector pin 2 passes through the channel 1, and a driving assembly 6 is inserted into the installation channel 12 and sleeved on the tail end of the ejector pin 2 to drive the ejector pin 2 to move back and forth along the axial direction. The heater 4 is inserted into the fixing base 200. Since the fixing base 200 is made of metal, it has good thermal conductivity. Therefore, the heater 4 heats the fixing base 200, and the heat can be conducted to the adhesive strip channel 3, causing the adhesive strip inside to melt into liquid adhesive, which then flows out from the dispensing nozzle 5 through the melting channel 11. Specifically, a sealing ring 13 is provided at the connection between the sol channel 11 and the installation channel 12 to prevent the adhesive from overflowing from the sol channel to the installation channel 12.

[0034] The nozzle 5 has a main dispensing port 51 connected to the channel 1 and two branch dispensing ports 52 connected to the main dispensing port 51. The two branch dispensing ports 52 extend in opposite directions from their connection points with the main dispensing port 51 to the front end of the nozzle 5, forming a Y-shape with the main dispensing port 51. The adhesive in the channel 1 flows out through the branch dispensing ports 52, allowing the adhesive to be distributed more evenly and reducing the likelihood of adhesive overflow during bonding.

[0035] Further explanation: The drive assembly 6 has a long tube 61 inserted into the mounting channel 12 and a chamber 62 communicating with the long tube 61. The tail end of the ejector pin 2 extends through the long tube 61 into the chamber 62 and is combined with an elastic drive member 63. Specifically, the long tube 61 has a small-diameter section 611 and a large-diameter section 612, and a step 613 is formed at the connection between the small-diameter section 611 and the large-diameter section 612. The elastic drive member 63 has an elastic element 631 fitted onto the ejector pin 2 and a force-receiving part 632 connected to the tail end of the ejector pin 2, such that one end of the elastic element 631 springs against the force-receiving part 632, and the other end springs against the step 613. In this embodiment, the elastic element 631 is preferably a compression spring. Specifically, at least two sealing rings 13 are installed in the small diameter section to prevent the sealing rings 13 at the connection between the sol channel 11 and the installation channel 12 from being damaged, causing the adhesive to flow into the large diameter section 612 and affecting the driving effect of the elastic drive component 63.

[0036] The force-bearing part 632 divides the chamber 62 into a displacement space 621 and a gas space 622. The displacement space 621 is provided with at least one through hole 623 communicating with the outside to discharge gas in the displacement space 621 and reduce compression resistance. In this embodiment, the displacement space 621 is provided with two through holes 623. The gas space 622 is connected to a gas supply channel 64. A control valve connector 65 is provided at the air inlet 641 of the gas channel 64 to connect a control valve (not shown in the figure) and control the input and output of gas. As shown in Figure 4, when the air pressure in the gas space 622 is greater than the elastic restoring force of the elastic element 631, the force-receiving part 632 is pushed towards the displacement space 621. The gas in the displacement space 621 is discharged through the through hole 623, reducing the resistance of the force-receiving part 632 in compressing the elastic element 631. This pushes the ejector pin 2 to its front end against the main glue outlet 51, thereby sealing the glue nozzle 5 and preventing the glue from overflowing from the glue channel 11. As shown in Figure 3, when the pressure in the gas space 622 is less than the elastic restoring force of the elastic element 631, the elastic element 631 pushes the force-receiving part 632 towards the gas space 622. The ejector pin 2 is pulled by the force-receiving part 632 and moves away from the main glue outlet 51, reopening the glue nozzle 5 and allowing the glue to overflow for application.

[0037] In actual use, as shown in Figure 3, the gas pressure in the gas space 622 is less than the elastic restoring force of the elastic element 631. The force-bearing part 632 is pushed against the gas space 622 by the elastic element 631. At this time, the ejector pin 2 leaves the main glue outlet 51, allowing the main glue outlet 51 to connect with the melt channel 11 of the channel 1. The heater 4 heats the fixing seat 200, causing the glue strip in the glue strip pipe 3 to melt into glue liquid and flow into the melt channel 11 of the channel 1. The glue liquid overflows from the two-way flow outlet 52 through the main glue outlet 51 of the glue nozzle 5 for glue application.

[0038] After the adhesive is applied, as shown in Figure 4, gas enters the gas space 622 through the control valve connector 65 and the gas passage 64. When the gas pressure in the gas space 622 is greater than the elastic restoring force of the elastic element 631, the force-bearing part 632 is pushed by the gas pressure to move towards the displacement space 621. As the force-bearing part 632 compresses the displacement space 621, the gas in the displacement space 621 is discharged from the through hole 623 and pushes the ejector pin 2 forward to its front end to close the main adhesive outlet 51. Even if the heater 4 continues to melt the adhesive strip, because the ejector pin 2 has closed the main adhesive outlet 51, the adhesive cannot flow out from the main adhesive outlet 51 and the branch outlet 52, thus achieving the effect of preventing adhesive overflow.

[0039] In addition, a gluing machine is provided, which uses the glue pen structure of the gluing machine as described in any of the preceding items.

[0040] The key design feature of this invention is that the fixing base is designed with a channel, a pin, a glue strip channel, and a heater. The pin is driven by a drive component to reciprocate along the axial direction of the channel to open or close the glue outlet. This effectively solves the problem of glue overflow caused by continuous heating and melting of the glue strip in standby mode. Furthermore, by closing or opening the main glue outlet with the pin, when changing processed parts or turning off the heater while residual heat continues to melt the glue strip, the pin closes the main glue outlet to prevent the glue in the melting channel from overflowing and seeping into the gaps of surrounding parts, and also to prevent residual glue from solidifying and clogging the glue outlet, effectively preventing glue overflow. Moreover, the glue outlet is connected to the main glue outlet by two branch outlets to form a Y-shaped glue outlet channel, which distributes the glue evenly on the sole, avoiding glue concentration and glue overflow during bonding, resulting in more uniform glue application.

[0041] Furthermore, the elastic element is moved by the change in air pressure within the gas space to close the dispensing nozzle. The structure is simple and lightweight, and does not increase the burden of moving the glue pen in the device.

[0042] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A glue pen structure for a front-end gluer, characterized in that: The system includes a body, the body having a fixing base, wherein the fixing base has: A channel extends through the fixed base along an axial direction and connects to a dispensing nozzle located at the front end of the fixed base; A pin is inserted into the channel and is driven by a drive component to reciprocate along the axis of the channel to open or close the dispensing nozzle. A rubber strip tube is disposed inside the fixed base and connected to the channel for inserting a rubber strip; A heater is inserted into the fixed base and heats the fixed base, causing the rubber strip in the rubber strip channel to melt into liquid adhesive, which then flows out from the dispensing nozzle through the channel.

2. The glue pen structure of the front-end gluing machine according to claim 1, characterized in that: The front end of the dispensing nozzle has a main dispensing port connected to the channel and two branch dispensing ports connected to the main dispensing port. The two branch dispensing ports extend in opposite directions from the connection point with the main dispensing port to the front end of the dispensing nozzle, and the adhesive in the channel flows out through the two branch dispensing ports.

3. The glue pen structure of the front-end gluing machine according to claim 1, characterized in that: The channel includes a sol channel and an installation channel for assembling the drive assembly. The sol channel is connected to the adhesive strip channel to store and guide the adhesive liquid. A sealing ring is provided at the connection between the sol channel and the installation channel to prevent the adhesive liquid from overflowing from the sol channel to the installation channel.

4. The glue pen structure of the front-end gluing machine according to claim 3, characterized in that: The drive assembly has a long tube inserted into the mounting channel and a chamber communicating with the long tube. The tail end of the ejector pin extends through the long tube into the chamber and is engaged with an elastic drive member. The chamber is connected to a gas supply channel, and gas is supplied from the gas channel to the chamber to act on the elastic drive member to push the ejector pin to move.

5. The glue pen structure of the front-end gluing machine according to claim 4, characterized in that: The long tube has a small diameter section and a large diameter section, and a stepped edge is formed at the connection between the small diameter section and the large diameter section. The elastic drive has an elastic element set on the ejector pin and a force-receiving part connected to the tail end of the ejector pin, so that one end of the elastic element abuts against the force-receiving part and the other end abuts against the stepped edge. The force-receiving part divides the chamber into a displacement space and a gas space, and the ejector pin is moved by controlling the gas pressure in the gas space.

6. The glue pen structure of the front-end machine according to claim 5, characterized in that: The displacement space is provided with at least one through hole connecting to the outside, so as to discharge the gas in the displacement space and reduce the compression resistance.

7. The glue pen structure of the front-end gluing machine according to claim 4, characterized in that: A control valve connector is provided at the air inlet of the air passage for connecting a control valve to control the input and output of gas.

8. A front-rolling machine, characterized in that: The application has the glue pen structure of the front-end machine as described in any one of claims 1 to 7.

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