Glue injection device for glass bonding of museum showcase

By introducing a rubber roller, a limiting plate, and a control push rod system into the glass bonding device for display cases, the problems of glue displacement and unevenness during the glass bonding process were solved, achieving efficient and stable glue injection results.

CN224237317UActive Publication Date: 2026-05-15BEIJING BOMINGTANG GLASS
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
BEIJING BOMINGTANG GLASS
Filing Date
2025-04-18
Publication Date
2026-05-15

AI Technical Summary

Technical Problem

In existing technologies, there are problems such as glue misalignment, unevenness, and low construction efficiency in the glass bonding process of museum display cases. In particular, it is difficult to maintain the consistency of the glue injection path and the stability of the glue volume by manual operation, and there is a lack of effective positioning and limiting structures.

Method used

An adhesive injection device was designed, comprising a moving block, rubber rollers, a limiting plate, and a control push rod system. The rubber rollers adhere to the glass surface to achieve stable clamping, the limiting plate ensures accurate positioning, and the control push rod system enables rapid installation and angle adjustment, ensuring a symmetrical and consistent adhesive injection path.

Benefits of technology

It improved the quality and efficiency of adhesive injection for display case glass splicing, reduced the reliance on precision in manual operation, solved the problems of adhesive displacement and unevenness, and enhanced the stability and precision of construction.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a glue injection device for glass bonding of a museum showcase, which comprises a moving block, a glue bottle, a sliding block, a rubber roller, a limiting plate, an adjusting lantern ring, springs, a control push rod and the like, the moving block is transversely arranged on a to-be-bonded surface of glass, and the sliding block and the symmetrically arranged springs are arranged in the moving block; clamping and positioning are achieved through contact of the rubber rolling wheels and the inner surface and the outer surface of glass, the sliding blocks can be rapidly separated and reset by controlling linkage of the push rods, the adjusting lantern rings installed between the extension plates are used for fixing a glue bottle and adjusting the glue outlet angle, and the locking bolts are used for positioning and adjusting the angle. Anti-skid lines are arranged on the surface of the roller and are matched with the limiting plate for use, so that the stable and accurate glue injection path can be ensured, and the problems of glue injection line deviation, infirm bonding, low operation efficiency and the like in the existing manual glue injection are effectively solved.
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Description

Technical Field

[0001] This utility model belongs to the field of display case bonding technology, specifically relating to an adhesive injection device for bonding glass in museum display cases. Background Technology

[0002] With the development of exhibition and display technology, museum display cases have increasingly higher requirements for structural aesthetics and sealing, especially the splicing process between glass panels, which often employs frameless bonding methods to ensure the continuity and transparency of the overall appearance. In actual construction, transparent structural adhesive is commonly used to bond the various glass panels of the display case. However, existing adhesive application methods mostly rely on manual operation, typically involving construction workers holding a glue bottle and slowly pushing it into the gaps to be bonded. This method has certain limitations.

[0003] First, due to the narrow glass seams and long bonding surfaces, workers are prone to misaligning the glue injection path during the glue application process due to hand movements. This can lead to the glue line being off-center or overflowing, which may seriously affect the appearance quality and bonding strength of the display case. Second, it is difficult to maintain consistent force during manual glue application, often resulting in unstable injection speed or uneven glue volume control, affecting the uniformity of the cured glue and the bonding strength. Third, in situations where multiple glass surfaces need to be positioned and glued simultaneously, existing technologies generally lack auxiliary positioning and limiting structures, leading to low construction efficiency and repeated adjustments that can easily cause construction errors. Utility Model Content

[0004] To address the problems existing in the prior art, the purpose of this utility model is to provide an adhesive injection device for bonding glass in museum display cases. This device is an auxiliary device with a reasonable structure, accurate positioning, and a stable and controllable adhesive injection process. It can improve the efficiency and quality of adhesive injection for splicing glass in display cases, reduce the dependence on the precision of manual operation, and solve the technical problems of adhesive injection deviation, uneven bonding, and low construction efficiency in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A glue-dispensing device for bonding glass in a museum display case includes a movable block and a glue bottle placed on one side of the main glass of the display case. The movable block is horizontally positioned at the surface of the glass to be bonded. The movable block is hollow inside with open ends. Sealing plates are threaded onto both ends of the movable block. All grooves are symmetrically opened on the bottom of the movable block. Slider blocks are symmetrically slidably installed inside the movable block. A fixing bolt is vertically downward set at the bottom of the slider. The fixing bolt passes through the groove. Rubber rollers are rotatably installed at the bottom of the fixing bolt. Two rubber rollers are in contact with the inner and outer surfaces of the glass, respectively. Limiting plates are set on the top of the rubber rollers. Two limiting plates are in contact with the side of the glass to be bonded, respectively. Extension plates are symmetrically fixed on one side of the movable block. An adjusting collar is rotatably installed between the two extension plates. The glue bottle's dispensing cone is inverted and inserted into the adjusting collar. The glue bottle's dispensing nozzle is in contact with the side of the glass to be bonded.

[0007] Furthermore, one of the extension plates is screwed with a locking bolt on one side, the locking bolt being used to lock and fix the dispensing angle of the glue bottle.

[0008] Furthermore, two springs are symmetrically placed inside the moving block, with the springs positioned between the slider and the sealing plate, and the springs exert an inward force on the slider.

[0009] Furthermore, a control push rod slides through the center of each of the two sliders, the control push rod extends outward through the sealing plate, one end of the control push rod is provided with a control squeezing rod, and the other end of the control push rod is provided with a misalignment rod.

[0010] Furthermore, the control extrusion rod is placed outside the moving block, and the two misaligned rods are misaligned and located at the inner center of the moving block. The ends of the control extrusion rods are respectively in contact with the surface of the other slider.

[0011] Furthermore, the surface of the rubber roller is provided with anti-slip texture, and the protrusion depth of the limiting plate is less than half the thickness of the glass to be bonded.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This invention utilizes symmetrically arranged sliders inside a movable block, with rubber rollers connected to the lower ends of the sliders. The two rubber rollers, under the action of springs, naturally conform to the inner and outer surfaces of the glass, achieving stable clamping. While conforming to the glass, the rollers also serve a guiding function, ensuring the movable block slides smoothly along the center line of the glass edge. This maintains a symmetrical and consistent glue injection path, effectively avoiding glue displacement caused by manual shaking or visual errors, improving bonding quality, and solving the technical problems of non-centered glue lines or glue overflow in existing technologies.

[0014] This invention sets a limiting plate that contacts the side of the glass to be bonded, and controls the protrusion depth of the limiting plate to be less than half the thickness of the glass. This ensures that the limiting does not interfere with the glue injection operation, while effectively limiting the position of the moving block, further preventing slippage and offset, aligning the center of the glue bottle with the center line of the glass bonding surface, ensuring that the glue bottle injects glue along the center line direction, improving the centering accuracy of construction, and effectively solving the problem of difficulty in maintaining the consistency of the glue injection path in traditional manual glue injection.

[0015] This invention features a control push rod system, including a control push rod penetrating the slider and the sealing plate, and control pressing rods and misalignment rods installed at both ends, forming a controllable linkage structure. During installation, the operator can simultaneously press the control pressing rods on both sides, causing the slider to separate instantly, facilitating the quick placement of the device across the glass edge. After installation, releasing the control pressing rods causes the springs to automatically reset, clamping the slider to the glass. This convenient and quick operation improves installation efficiency and solves the problems of poor slider structure stability and complex adjustment operations in existing technologies.

[0016] This utility model features an extension plate on both sides of the movable block, with an adjusting collar between the extension plates. The adjusting collar is used to insert an inverted glue bottle and control its injection angle by rotation. A locking bolt is used to fix the glue bottle's dispensing angle position. Structurally, this achieves precise adjustment of the injection direction and angle, avoiding uneven or misaligned injection lines caused by angle deviations during injection. Simultaneously, it ensures a smooth and continuous injection trajectory, improving injection consistency and glue filling quality, and overcoming the problems of poor stability in manual operation and high reliance on skilled workers.

[0017] The rubber roller of this invention has anti-slip texture on its surface, which significantly improves the friction between the roller and the glass surface. It can effectively prevent slippage or position jumping during the sliding process of the glue injection device, ensuring a smooth and stable movement trajectory throughout the glue injection process. This effectively improves the controllability of the device and the continuity of the glue injection operation, and improves the problem of unstable sliding of the moving block in the traditional glue injection process. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the installation three-dimensional structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the glue bottle installation structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the moving block and adjusting collar structure of this utility model;

[0021] Figure 4 For the present utility model Figure 3 A top view of the transverse cross-section of the structure;

[0022] Figure 5This is a schematic diagram of the internal structure of the movable block of this utility model;

[0023] Figure 6 This is a schematic diagram of the slider and control push rod structure of this utility model;

[0024] Figure 7 This is a schematic diagram of the slide groove position structure of this utility model.

[0025] The attached diagram lists the components represented by each number as follows:

[0026] 1. Display case body; 2. Movable block; 21. Extension plate; 22. Slide rail; 3. Locking bolt; 4. Adjusting collar; 5. Sealing plate; 6. Sliding block; 61. Fixing bolt; 62. Rubber roller; 63. Limiting plate; 7. Spring; 8. Control push rod; 81. Control squeezing rod; 82. Misalignment rod; 9. Glue bottle. Detailed Implementation

[0027] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0028] Example 1:

[0029] refer to Figures 1-7As shown, a glue injection device for bonding glass in a museum display case includes a movable block 2 and a glue bottle 9 placed on one side of the glass of the display case body 1. The movable block 2 is placed horizontally on the surface of the glass to be bonded, guiding the glue injection trajectory along the side of the glass. The movable block 2 is made of aluminum alloy through extrusion molding, has a hollow structure and is open at both ends to reduce the weight of the device and provide installation space for the slider 6 and the control mechanism. Both ends of the movable block 2 are connected to sealing plates 5 by M12 threads. The sealing plates 5 are made of polyoxymethylene plastic through molding, have good airtightness and structural strength, and are used to seal both ends of the movable block 2 to prevent dust from entering and internal parts from falling off. The bottom of the movable block 2 is... The device has two rectangular grooves 22, each measuring 10mm × 60mm, designed to guide the vertical movement of the slider 6. The slider 6 is symmetrically mounted inside the moving block 2. Made of high-strength polycarbonate injection molding, the slider 6 exhibits excellent wear resistance and sliding properties. A fixing bolt 61, made of stainless steel with a diameter of Φ6mm and a length of 25mm, is vertically positioned at the bottom of the slider 6. The fixing bolt 61 penetrates the grooves 22 to limit the lateral position of the slider 6 and provides a fulcrum for the roller rotation. A rubber roller 62, with a diameter of Φ20mm, is rotatably mounted at the bottom of the fixing bolt 61 via a rolling bearing. The surface is made of highly elastic nitrile rubber with cross-shaped anti-slip texture to enhance friction with the glass surface, thereby achieving precise control of the glue injection direction of the moving block 2. Two rubber rollers 62 contact the inner and outer surfaces of the glass respectively, forming a rollable double-sided pressing structure to ensure the centering stability of the glue injection channel. A limiting plate 63 is provided on the top of the rubber rollers 62. The limiting plate 63 is made of polyoxymethylene plastic and fixed to the top of the slider 6. It fits the edge of the glass through a flange structure with a width of 5mm. The two limiting plates 63 contact the side of the glass to be bonded, providing lateral limiting to prevent the moving block 2 from deviating from the centerline. The protrusion depth of the limiting plate 63 is controlled. To avoid interfering with the glue dispensing operation, the thickness of the glass (generally 8mm) should be less than half of the glass thickness. Two extension plates 21 are symmetrically fixed on one side of the moving block 2. The extension plates 21 are CNC machined from stainless steel plates with a thickness of 4mm. An adjusting collar 4 is rotatably installed between the two extension plates 21. The adjusting collar 4 is made of polytetrafluoroethylene and has an internal thread retaining ring structure to adjust and stabilize the glue dispensing angle. The glue bottle 9 is a 500ml UV-curable glass glue bottle. The glue dispensing cone is inverted and inserted into the inside of the adjusting collar 4. The glue bottle 9 has a Φ3mm silicone tube at the dispensing port that is in close contact with the side of the glass to be bonded to ensure glue dispensing accuracy and bonding effect.

[0030] refer to Figure 2 and Figure 7As shown, a locking bolt 3 is screwed onto one side of one of the extension plates 21. The locking bolt 3 is an M10×30 stainless steel hex bolt with a nylon retaining washer on the bolt head to prevent loosening due to vibration. The locking bolt 3 locks the angle of the adjusting ring 4 by screwing it onto the side wall of the adjusting ring 4. The use of the locking bolt 3 ensures that the glue bottle 9 maintains a consistent angle during glue dispensing, preventing deviations in the glue dispensing angle from affecting the stability of the glue dispensing trajectory, which helps to improve the bonding quality and reduce human error.

[0031] refer to Figure 4 and Figure 5 As shown, two springs 7 are symmetrically placed inside the movable block 2. The springs 7 are compression springs, made of 65Mn steel wire with a wire diameter of 1.0mm, a free length of 30mm, and a compression strength of 2.5N. The springs 7 are respectively placed in the guide limiting cavity between the slider 6 and the sealing plate 5. When the springs 7 are not subjected to external force, they continuously apply an inward elastic force to the slider 6, so that the two rubber rollers 62 naturally approach each other and fit against the inner and outer surfaces of the glass, thereby forming a clamping state. This effectively prevents the movable block 2 from derailing or loosening during the glue injection process, and improves the glue injection accuracy and safety.

[0032] refer to Figures 4-6 As shown, a control push rod 8 slides through the center of each of the two sliders 6. The control push rod 8 is made of 304 stainless steel round bar with a diameter of Φ4mm and a length of 110mm. The two ends of the push rod 8 slide through the slider 6 and the sealing plate 5 respectively, and are arranged symmetrically along the transverse side of the moving block 2. It is used to transmit control extrusion force to realize the synchronous separation or return of the sliders 6. The control push rod 8 extends outward through the sealing plate 5 and extends outward from the outside of the device for easy manual control. One end of the control push rod 8 is provided with a control extrusion rod 81. The control extrusion rod 81 is an injection-molded structure of ABS material with anti-slip protrusions and a length of 40mm. It is placed on the outside of the moving block 2. The other end of the control push rod 8 is provided with a misalignment rod 82. The misalignment rod 82 is an eccentric cam structure integrated with the push rod. The two misalignment rods 82 are staggered in the central area inside the moving block 2. When the two control extrusion rods 81 are squeezed at the same time, the misalignment rods 82 will synchronously and symmetrically push the opposite slider 6 to slide outward, so that the rubber roller 62 separates, making it easy for the moving block 2 to slide freely to the designated bonding position before installation.

[0033] refer to Figure 4 and Figure 5As shown, the control extrusion rod 81 is placed on the outside of the moving block 2, which facilitates the operator to apply force without interfering with the internal structure; the two misaligned rods 82 are misaligned at the internal center of the moving block 2, and achieve cross-linking extrusion function on the slider 6 through precise cooperation; the ends of the control extrusion rods 81 are in contact with the surface of the slider 6 on the other side, and when an external thrust is applied, the misaligned rods 82 can be directly driven to apply external force to the slider 6; this structure can realize synchronous adjustment of the slider 6, effectively improve the adjustment efficiency and maintain the symmetry and stability of the rubber rollers 62 on both sides at the glass edge, reduce the skew problem caused by installation errors, and improve the accuracy of the glue injection trajectory.

[0034] refer to Figure 5 and Figure 6 As shown, the surface of the rubber roller 62 is provided with cross anti-slip patterns. The depth of the anti-slip patterns is 0.5mm and the spacing is 1.5mm, which is used to enhance the friction coefficient between the roller and the glass contact surface and effectively prevent slippage or jumping during rolling. The protrusion depth of the limiting plate 63 is controlled to be no more than 4mm, specifically 3.5mm, which is less than half of the common glass thickness (8mm). This can avoid the limiting structure from interfering with the glue bottle and the bonding gap, while ensuring that the glue injection path is consistent with the center line of the glass edge, further improving the glue injection accuracy and bonding effect, and solving the problems of glue displacement and weak bonding in the existing manual glue injection process.

[0035] Example 2: Design of a moving guide structure based on clamping stability and neutral glue injection trajectory

[0036] In this embodiment, the movable block 2 is made of T6-6063 aviation aluminum, which has excellent strength and corrosion resistance after anodizing. The movable block 2 is fitted with the sealing plate 5 by M12 thread at both ends, and has a rectangular groove 22 with a size of 10mm×60mm at the bottom. The slider 6 is made of transparent polycarbonate injection molding, which has good rigidity and transparency. Its lower end is connected to a Φ6×25mm 304 stainless steel fixing bolt 61. The bottom of the fixing bolt is rotatably connected to the rubber roller 62 through a built-in miniature rolling bearing. The rubber roller is made of Φ20mm nitrile rubber and has a 0.5mm deep cross anti-slip texture. Under the combined action of the springs 7 on both sides (free length 30mm, compressive load 2.5N), the two rollers naturally fit against the inner and outer surfaces of the glass, forming a self-centering clamping state, and roll stably along the center line of the glass during the movement.

[0037] In contrast, the case uses a regular push-type glue gun without clamping function. During construction, the glue bottle is manually pushed forward, and the glue path relies on manual control to align with the center line of the glass edge. This can easily cause the glue to deviate from the center of the glass bonding gap due to hand tremors or parallax deviation, resulting in poor adhesion or glue overflow.

[0038] Example 3: An auxiliary positioning mechanism for precise control of glue injection position based on a limiting structure

[0039] In this embodiment, the limiting plate 63 is precision injection molded from polyoxymethylene (POM) plastic, with a width of 5mm and a protrusion depth of 3.5mm, and is fixed to the top of the slider 6. The flange structure of the limiting plate fits against the side of the edge of the glass to be bonded, and by forming a physical limit with the two sides of the glass, it effectively prevents the moving block 2 from shifting laterally. This structure, together with the double-sided clamping rollers, forms a stable three-point support system, so that the middle position of the adjusting collar 4 is always directly above the glass gap, improving the consistency of the glue injection line and ensuring that the glue injection direction is completely aligned with the bonding line. It is especially suitable for display case structures with a glass thickness of 8mm±0.5mm.

[0040] In the comparative case, the limiting plate structure was omitted, and the positioning was only achieved by clamping with rollers. If the rollers were loose or the glass was slightly off during construction, the entire moving block might shift, ultimately causing the center line of the glue injection to be misaligned to the left and right, which would affect the appearance and structural stability.

[0041] Example 4: A quick clamping solution for convenient installation based on a control push rod linkage mechanism

[0042] In this embodiment, a control push rod 8 (Φ4mm, 110mm long, 304 stainless steel round bar) slides through the center of the slider 6 and extends out through the sealing plates 5 on both sides to form a complete transmission path. The two ends of the push rod are respectively connected to an ABS plastic injection-molded control extrusion rod 81 (40mm long) and an integrated eccentric cam structure misalignment rod 82. The two misalignment rods 82 are arranged alternately inside the moving block. When both hands press the control extrusion rod 81 at the same time, the thrust is transmitted along the push rod to drive the misalignment rod 82 to push the other slider 6 outward. After release, the internal spring 7 quickly resets to achieve clamping. This structure enables fast, symmetrical, and synchronous device installation and is suitable for high-frequency glue injection operation scenarios.

[0043] The comparison case is a typical manual detachable slider structure, which requires each roller component to be loosened, disassembled, and installed individually. This process is time-consuming, and loose sliders can lead to unstable glue injection. The process of manually adjusting the clamping force is cumbersome and poses safety hazards.

[0044] Example 5: Controllable dispensing path design based on dispensing angle adjustment structure

[0045] In this embodiment, the extension plate 21 is made of 304 stainless steel plate with a thickness of 4mm, and is precision machined by CNC to ensure connection strength and geometric symmetry. A polytetrafluoroethylene adjusting collar 4 with an inner diameter of Φ28mm and a thickness of 8mm is set between the extension plates. The adjusting collar has an internal thread. The conical dispensing head of the glue bottle 9 is inserted upside down into the collar and the angle is adjusted. After the angle is adjusted, it is locked and fixed by M10×30mm locking bolts 3 to ensure that the dispensing angle of the glue bottle does not shift due to vibration. This structure can ensure that the dispensing path moves stably along the glass gap, and solves the problem of inaccurate angle or derailment of the glue bottle when manually held.

[0046] In the comparative case, the glue bottle had no fixed mechanism, and the direction of glue dispensing was controlled manually. During the bonding process, the glue was easily misdispensed due to unstable hand operation or inconsistent angles, which made it difficult to achieve precise control, especially when bonding glass corners or edges.

[0047] Example 6: Friction-enhancing structure based on surface anti-slip rollers to improve motion stability

[0048] In this embodiment, the rubber roller 62 is made of nitrile rubber (NBR), with an outer diameter of Φ20mm and a thickness of 10mm. The surface is molded with cross anti-slip patterns with a depth of 0.5mm and a spacing of 1.5mm. The patterns are arranged at a 45° angle to improve rolling friction and prevent slippage when rolling on the glass surface. With the help of spring clamping force, the roller can roll smoothly along the side of the glass, driving the moving block 2 forward, thereby realizing the stable movement of the glue bottle along the adhesive seam to output glue.

[0049] The comparison case used a regular, textureless roller. During the rolling process, because the contact surface with the glass was smooth, it was very easy for the roller to slip and drift. This not only affected the position of the glue bottle, but also caused the rolling trajectory to jump, resulting in intermittent glue dispensing or uneven glue accumulation.

[0050] The working principle of this utility model is as follows: Select a suitable adhesive and insert it inverted into the adjusting collar 4. Since the sealing plate 5 and the moving block 2 are fixed by threaded engagement, the spring 7 will apply an inward force to the slider 6, causing the two sliders 6 to move closer to the center without external force. At this time, the two rubber rollers 62 meet and approach each other. During installation, the control extrusion rods 81 on both sides can be pressed simultaneously. The control extrusion rods 81 will slide inward, and the control extrusion rods 82 will slide through the slider 6 on the same side, thus not affecting the slider 6. The other slider 6 is pushed outward by the misalignment rod 82. Simultaneous pressing allows the two sliders 6 to separate synchronously. At this time, the spring... Spring 7 is compressed and stores force, then the moving block 2 is placed across the glass to be bonded surface, so that the two rubber rollers 62 are placed on both sides of the glass. Then the compression of the control compression rod 81 is released. At this time, due to the elasticity of spring 7, the two sliders 6 can move closer to the center until the two rubber rollers 62 are in contact with the inner and outer surfaces of the glass. At this time, the rubber rollers 62 can roll along the side of the glass, driving the moving block 2 to move. The limiting plate 63 is placed on the glass to be bonded surface to play a limiting role, thereby ensuring that the center of the adjusting collar 4 is exactly above the center line of the glass to be bonded surface, so as to improve the stability of the glue injection and ensure the glue injection quality.

[0051] Adjust the adjusting ring 4 according to the direction and angle of glue injection, and fix it by screwing in the locking bolt 3. At this time, the glue bottle 9 can only move along the bonding surface of the glass. Pressing the glue bottle 9 during the movement can achieve precise and stable glue injection, and prevent the main glue from shifting due to the worker's hand shaking.

[0052] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A glue-dispensing device for bonding glass in a museum display case, comprising a movable block (2) placed on one side of the glass of the display case body (1) and a glue bottle (9), characterized in that: The movable block (2) is placed horizontally on the glass surface to be bonded. The movable block (2) is hollow inside with open ends. Both ends of the movable block (2) are threaded with sealing plates (5). All the sliding grooves (22) are symmetrically opened at the bottom of the movable block (2). Sliding blocks (6) are symmetrically slidably installed inside the movable block (2). A fixing bolt (61) is set vertically downward at the bottom of the sliding block (6). The fixing bolt (61) passes through the sliding groove (22). A rubber roller (62) is rotatably installed at the bottom of the fixing bolt (61). Two rubber rollers (62) are in contact with the inner and outer surfaces of the glass respectively. A limiting plate (63) is provided on the top of the rubber rollers (62). The two limiting plates (63) are in contact with the side of the glass to be bonded respectively. An extension plate (21) is symmetrically fixed on one side of the moving block (2). An adjusting collar (4) is rotatably installed between the two extension plates (21). The glue bottle (9) dispensing cone is inverted and inserted into the inner side of the adjusting collar (4). The glue bottle (9) dispensing port is in contact with the side of the glass to be bonded.

2. The adhesive injection device for bonding museum display case glass according to claim 1, characterized in that: One of the extension plates (21) is screwed with a locking bolt (3) on one side, which is used to lock and fix the glue bottle (9) at the glue dispensing angle.

3. The adhesive injection device for bonding museum display case glass according to claim 1, characterized in that: Two springs (7) are symmetrically placed inside the movable block (2). The springs (7) are positioned between the slider (6) and the sealing plate (5). The springs (7) exert an inward force on the slider (6).

4. The adhesive injection device for bonding museum display case glass according to claim 1, characterized in that: The center of each of the two sliders (6) is slidably penetrated by a control push rod (8), which extends outward through the sealing plate (5). One end of the control push rod (8) is provided with a control squeezing rod (81), and the other end of the control push rod (8) is provided with a misalignment rod (82).

5. The adhesive injection device for bonding museum display case glass according to claim 4, characterized in that: The control squeezing rod (81) is placed outside the moving block (2), and the two misaligned rods (82) are misaligned at the center of the moving block (2). The ends of the control squeezing rod (81) are in contact with the surface of the other slider (6).

6. The adhesive injection device for bonding museum display case glass according to claim 1, characterized in that: The surface of the rubber roller (62) is provided with anti-slip texture, and the protrusion depth of the limiting plate (63) is less than half the thickness of the glass to be bonded.