Handheld sealing compound injection device

Abstract

The utility model belongs to the technical field of shoemaking, and particularly discloses a handheld sealing compound injection device. The device comprises a syringe and a push rod, one end of the syringe is open and provided with two wing-shaped handles perpendicular to the length direction of the syringe, the other end of the syringe is provided with an injection port, a piston is slidably mounted in the syringe, the push rod is inserted into the syringe, the end of the push rod is fixedly connected with the piston, and the device further comprises an injection head and a sealing connecting piece capable of rotating around the axis of the injection port. The injection head is of a hollow conical structure, the bottom end of the injection head is round, and the top end is oval. The bottom end of the injection head is rotationally connected with the injection port through a sealing connecting piece; a circle of sealing ring is arranged at one end, connected with the sealing connecting piece, of the injection port along the circumferential direction of the outer wall; and a groove matched with the sealing ring is formed in the sealing connecting piece. The sealing glue injection device can be well attached to a gap in the edge of a shoe sole, injection work of sealing glue is completed, glue discharging is even, and use is convenient and comfortable. The sealing glue injection device is suitable for sealing glue injection for gluing of uppers and soles.

Description

Technical Field

[0001] This utility model belongs to the field of shoemaking technology and relates to a handheld sealing glue injection device. Background Technology

[0002] Shoes are structurally divided into two parts: the upper and the sole. In shoe production, the upper and sole are usually processed separately, and then the upper and sole are fixed together. The most common way to fix them together is by gluing them together with adhesive.

[0003] However, when the glue is sprayed onto the sole, it does not cover the entire sole area; the edges of the sole are not coated with glue. After the sole and upper are glued together, there is usually a gap at the edge where they meet. To ensure a secure bond between the sole and upper, a sealant is manually injected around the edge of the sole to bond it to the upper.

[0004] The existing injection sealing adhesive uses a general-purpose syringe, which has the following problems: 1. Its injection nozzle is a relatively thick cylindrical shape, which cannot fit well into the gaps at the edge of the shoe sole, and the injection volume is difficult to control. If the gap is too small, it needs to be widened manually before the injection head can be inserted for sealing adhesive injection, which is extremely inconvenient during use; 2. Since the person injecting the sealing adhesive needs to hold the syringe and apply force on the hard piston pusher and wing-shaped handle, prolonged use will inevitably cause discomfort to the fingers, thereby reducing the work efficiency of employees; 3. The piston of the syringe is made of rubber, which will be corroded by the glue during long-term use, thereby losing its sealing function, increasing the frequency of syringe replacement, which is not conducive to cost reduction. Summary of the Invention

[0005] The purpose of this invention is to provide a handheld sealing adhesive injection device. This invention can fit well into the gaps at the edge of the shoe sole to complete the sealing adhesive injection. It also dispenses adhesive evenly, is durable, and is convenient and comfortable to use.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A handheld sealing adhesive injection device includes an injection cylinder and a push rod. One end of the injection cylinder is open and has two wing-shaped handles perpendicular to the length direction of the injection cylinder, and the other end has an injection port. A piston is slidably installed inside the injection cylinder. The push rod is inserted into the injection cylinder and the end of the push rod is fixedly connected to the piston. It also includes an injection head and an internally hollow sealing connector that can rotate about the axis of the injection port.

[0008] The injection head is a hollow cone-shaped structure with a circular bottom and an elliptical top.

[0009] The bottom end of the injection head is rotatably connected to the injection port via a sealing connector;

[0010] The injection port is connected to the sealing connector at one end, and a sealing ring is provided around the outer wall circumferentially; the sealing connector is provided with a groove that matches the sealing ring.

[0011] As a limitation, the syringe is fitted with a first anti-slip elastic pad that contacts the two wing-shaped handles;

[0012] The length of the first elastic pad is greater than the sum of the lengths of the two wing-shaped stalks.

[0013] As a second limitation, the end of the push rod used for finger pressing is provided with a second elastic pad for anti-slip.

[0014] As a third limitation, the piston is covered with a corrosion-resistant sealing film.

[0015] As a fourth limitation, the syringe is made of a transparent material.

[0016] As a further limitation, the outer wall of the syringe is provided with a capacity scale.

[0017] The technological advancements achieved by this invention compared to existing technologies, due to the adoption of the aforementioned technical solution, are as follows:

[0018] (1) This utility model uses a flat injection head, which can fit well into the gap at the edge of the shoe sole, adapt to different crack sizes, and dispense glue evenly, thereby completing the injection of sealing glue.

[0019] (2) The present invention enables the injection head to rotate under the drive of the sealing connector through the cooperation of the sealing ring and the groove. When the employee is performing the glue injection operation, he only needs to insert the flat opening of the injection head into the gap and then inject glue along the edge of the shoe sole. There is no need to adjust the angle of the injection head at any time, which overcomes the limitations of the flat opening and greatly improves the work efficiency.

[0020] (3) The present invention is equipped with anti-slip elastic soft pads on both the piston pusher and the wing-shaped handle, which can improve the user experience of employees and eliminate the discomfort of employees' fingers during use;

[0021] (4) The present invention has a layer of anti-corrosion sealing film covering the piston, which can prevent the piston from being corroded by glue and greatly improve the durability of the present invention.

[0022] (5) This utility model uses a transparent syringe, and the outer wall of the syringe is marked with graduations, so that the amount and state of the glue can be clearly seen, which is beneficial for the replenishment and replacement of glue.

[0023] This utility model belongs to the field of shoe manufacturing technology. It can fit well into the gaps at the edge of the shoe sole, complete the injection of sealing glue, and the glue is dispensed evenly, durable, convenient and comfortable to use. Attached Figure Description

[0024] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0025] In the attached diagram:

[0026] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention;

[0027] Figure 2 for Figure 1 Enlarged view of section A in the middle;

[0028] Figure 3 This is a cross-sectional view showing the connection between the sealing connector and the injection port.

[0029] In the diagram: 1. Injector barrel, 2. Push rod, 3. Wing-shaped handle, 4. Injection port, 5. Injection head, 6. Sealing connector, 7. First elastic pad, 8. Second elastic pad, 9. Sealing ring, 10. Groove. Detailed Implementation

[0030] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0031] Example 1: A handheld sealing adhesive injection device

[0032] like Figures 1 to 3 As shown, this embodiment includes an injection cylinder 1 with an injection port 4 at one end, a push rod 2, an injection head 5, and a hollow, sealed connector 6 capable of rotating about the axis of the injection port 4. The injection cylinder 1 is made of transparent material and has volume graduation lines on its outer wall. A piston is slidably installed inside the injection cylinder 1, and the push rod 2 is inserted into the injection cylinder 1, with its end fixedly connected to the piston. A second elastic pad 8 for finger pressing is installed at the end of the push rod 2 opposite to the piston. The injection cylinder 1 is open at the end opposite to the injection port 4 and has two wing-shaped handles 3 perpendicular to the axis of the injection cylinder 1. A first elastic pad 7 is also fitted on the injection cylinder 1, contacting the two wing-shaped handles 3. The length of the first elastic pad 7 is greater than the sum of the lengths of the two wing-shaped handles 3, and both ends of the first elastic pad 7 extend beyond the ends of the two wing-shaped handles 3. Both the first elastic pad 7 and the second elastic pad 8 are anti-slip elastic pads.

[0033] like Figure 2As shown, the injection head 5 is rotatably connected to the injection port 4 via a sealing connector 6. The injection head 5 is a hollow conical structure with a circular bottom and an elliptical top. The bottom end of the injection head 5 is fixedly connected to the sealing connector 6. The sealing connector 6 is a hollow hexagonal prism and is rotatably connected to the injection port 4.

[0034] like Figure 3 As shown, at the end of the injection port 4 connected to the sealing connector 6, a sealing ring 9 is provided around the outer wall circumferentially. The sealing connector 6 has a groove 10 that matches the sealing ring 9. Here, "matching" means that the sealing ring 9 on the injection port 4 can fit perfectly into the groove 10 on the sealing connector 6, allowing the sealing ring 9 to perform a sealing function.

[0035] Due to the fit between the sealing ring 9 and the groove 10, in this embodiment, the sealing connector 6 can rotate about the axis of the injection port 4 during use, thereby driving the flat injection head 5 to rotate.

[0036] In this embodiment, a corrosion-resistant plastic film is wrapped around the piston, which can effectively prevent the piston from being corroded by glue.

[0037] Before use, the push rod 2 needs to be pushed into the syringe 1, the injection head 5 submerged in the sealant bottle, and then the push rod 2 is pulled to draw the sealant into the syringe 1. After preparing the sealant, when injecting it, simply insert the injection head 5 into the gap between the upper and sole, and slowly inject the sealant by pushing the push rod 2 while simultaneously circling the edge of the sole. The flat injection head 5 is easier to insert into the gap where the upper and sole meet. Because the injection head 5 can rotate under the action of the sealing connector 6, it can remain in contact with the gap while circling it, eliminating the need to constantly adjust its angle, making it convenient and effortless to use. During use, the fingers remain in contact with the first elastic pad 7 on the wing-shaped handle 3 and the second elastic pad 8 on the push rod 2, maintaining finger comfort during application and improving employee work efficiency.

[0038] In this embodiment, the sealing connector 6 is a hexagonal prism, and the shape of the sealing connector 6 can be adjusted according to the actual situation.

[0039] In summary, this embodiment can fit well into the gaps at the edge of the shoe sole, complete the injection of sealing adhesive, and the adhesive is dispensed evenly, durable, convenient and comfortable to use.

Claims

1. A handheld sealing adhesive injection device, comprising an injection cylinder and a push rod, wherein one end of the injection cylinder is open and has two wing-shaped handles perpendicular to the length direction of the injection cylinder, and the other end has an injection port; a piston is slidably installed inside the injection cylinder; the push rod is inserted into the injection cylinder, and the end of the push rod is fixedly connected to the piston; characterized in that, It also includes an injection head and an internally hollow sealing connector that can rotate about the injection port axis; The injection head is a hollow cone-shaped structure with a circular bottom and an elliptical top. The bottom end of the injection head is rotatably connected to the injection port via a sealing connector; The injection port is connected to the sealing connector at one end, and a sealing ring is provided around the outer wall circumferentially; the sealing connector is provided with a groove that matches the sealing ring.

2. The handheld sealing adhesive injection device according to claim 1, characterized in that, The syringe is fitted with a first elastic soft pad for preventing slippage, which contacts the two wing-shaped handles. The length of the first elastic pad is greater than the sum of the lengths of the two wing-shaped stalks.

3. The handheld sealing adhesive injection device according to claim 1, characterized in that, The push rod has a second elastic pad for anti-slip on the end for finger pressing.

4. The handheld sealing adhesive injection device according to claim 1, characterized in that, The piston is covered with a corrosion-resistant sealing film.

5. A handheld sealing adhesive injection device according to claim 1, characterized in that, The syringe is made of a transparent material.

6. A handheld sealing adhesive injection device according to claim 5, characterized in that, The outer wall of the syringe is provided with volume graduation lines.

Images