Portable rubber round strip hot bonding device

Abstract

The utility model discloses a portable rubber round strip hot bonding device, which relates to the field of rubber round strip connection and comprises a fixed block hinged with a movable block, and the movable block and the fixed block can be completely attached. The lower side face of the movable block and the upper side face of the fixed block are each provided with an arc-shaped groove matched with the arc-shaped groove, and the arc-shaped grooves in the two parts can be spliced into a model hole. Heating parts are arranged in the movable block and the fixed block; a locking screw is hinged to the fixed block, the rotating plane of the locking screw is not perpendicular to the rotating plane of the movable block, and the movable block and the fixed block are each provided with a notch used for containing the locking screw. The locking screw is in threaded connection with a locking nut, and when the movable block is locked to be completely attached to the fixed block, the locking nut can be directly or indirectly pressed on the upper side face of the movable block. The hot bonding device is simple in structure, small in size, light in weight, convenient to carry, easy and convenient to operate and capable of conducting hot bonding on the rubber round strips very conveniently and rapidly on the installation site of the generator.

Description

Technical Field

[0001] The utility model relates to the field of rubber round strip connection, in particular to a portable rubber round strip thermal bonding device. Background Art

[0002] Rubber round strips are widely used sealing products in the manufacture of power generation equipment. Since the sealing surface of power generation equipment is large, rubber round strips are usually used to form a closed sealing shape, which is then cut to the appropriate size and the ends of the rubber round strips are bonded.

[0003] At present, there are two methods for bonding rubber round strips: hot bonding and cold bonding. Cold bonding is the only bonding method currently used on-site in the installation of power generation equipment. The so-called cold bonding is actually glue bonding at normal temperature, that is, using special rubber glue to bond the ends of the cut rubber round strips (see Figure 1 ). The operation method is: first, bevel the side at 45° (bevel is to increase the bonding area), clean the side, then apply glue on the two sides, then fix the bonding point by hand, and after a certain curing time, it can be used. The advantage of this method is that it does not require any equipment and has low requirements for the bonding environment. There are two main disadvantages: 1. After the bonding surface is beveled at 45°, for soft rubber materials, it is difficult to align and fix by hand during bonding, which can easily lead to misalignment of the bonding point. The misalignment and unevenness of the bonding point will significantly reduce the sealing effect; 2. In order to ensure strength, the adhesive currently used for cold bonding is instant adhesive. After curing, the instant adhesive will harden, resulting in a decrease in the resilience of the joint and a reduction in the sealing effect. In addition, the aging resistance of the instant adhesive in sealing media such as lubricating oil and water is also poor, and there is a risk of failure after long-term use.

[0004] The principle of hot bonding is: using the same type of pre-polymerized adhesive as the rubber to be bonded, vulcanization and cross-linking reaction under a certain temperature and pressure, so as to connect the two bonding surfaces. The operation method is: cut the two bonding surfaces flat, apply special adhesive on both sides, put them into the mold cavity, place the mold cavity in a flat vulcanizer for pressurization and heating, and wait for the adhesive to be completely vulcanized. The advantages of this method are: 1. Due to the fixed alignment in the mold cavity, after high temperature and pressurization, the bonding part of the rubber strip is neat and smooth; 2. Since the adhesive is made of the same material as the rubber round strip, the bonding part has the characteristics of rebound, medium resistance, and aging resistance similar to the rubber body. However, the disadvantages of this method are: 1. Bonding requires molds, flat vulcanizers and other equipment and devices, and its heating and pressurization process is relatively complicated, takes a long time, and cannot be implemented on site.

[0005] In summary, cold bonding, as the currently used on-site bonding method, is convenient, but the bonding quality is poor; hot bonding has good bonding quality, but requires molds and large equipment and cannot be implemented on-site.

[0006] There are many existing devices for hot bonding of rubber round strips. For example, the Chinese patent with publication number "CN107283851 B" discloses "Rubber Strip Connection Method, Sealing Ring Processing Technology and Processing Equipment", which has a complex structure and a large volume, and is not suitable for on-site installation of generators; another example is the Chinese patent with publication number "CN219214140U" discloses "A Hot Bonding Device", and its structure for locking the upper and lower molds is relatively complex.

[0007] Therefore, a new rubber round strip thermal bonding device is needed in this field. Utility Model Content

[0008] The purpose of the utility model is to provide a portable rubber round strip thermal bonding device in view of the above-mentioned problems, which has a simple structure, a small size, a light weight, is easy to carry, and is easy to operate, and can be used to thermally bond rubber round strips very conveniently at the generator installation site.

[0009] The technical solution adopted by the utility model is as follows: a portable rubber round strip hot bonding device, comprising a fixed block, a movable block is hinged on the fixed block, and the lower side of the movable block and the upper side of the fixed block can be completely fitted; the lower side of the movable block and the upper side of the fixed block are both provided with arc grooves matching each other, and the arc grooves on the two components can be pieced together to form a model hole; heating components are both provided in the movable block and the fixed block; a locking screw is directly or indirectly hinged on the fixed block, the rotation plane of the locking screw is not perpendicular to the rotation plane of the movable block, and the movable block and the fixed block are both provided with a notch for placing the locking screw; a locking nut is threadedly connected to the locking screw, and when the locking movable block is completely fitted to the fixed block, the locking nut can be directly or indirectly pressed against the upper side of the movable block.

[0010] Furthermore, for the movable block, the heating component is arranged directly above the arc groove; for the fixed block, the heating component is arranged directly below the arc groove.

[0011] Furthermore, the heating component is an electric heating plate, and the electric heating plate is connected to an external power source.

[0012] Furthermore, the electric heating plate is connected to an external power source through a controller.

[0013] Furthermore, the rotation plane of the locking screw is parallel to the rotation plane of the movable block.

[0014] Furthermore, the outer diameter of the locking nut is greater than the width of the notch.

[0015] Furthermore, the locking screw is sequentially sleeved with a locking pressure block, a compression spring and a spring pressure block from bottom to top, the outer diameter of the locking nut is not less than the inner diameter of the spring pressure block; the bottom surface size of the locking pressure block is larger than the width of the notch.

[0016] Furthermore, a first arc is provided at the top of the movable block and at the notch position, and a second arc is provided at the bottom of the locking pressure block; and a step surface is provided on the locking screw, the size of the step surface is larger than the inner diameter of the locking pressure block, and when the locking movable block is completely fitted to the fixed block, the step surface is located between the two ends of the first arc.

[0017] Furthermore, a handle is fixed on the upper surface of the movable block.

[0018] Furthermore, there are multiple arc-shaped grooves on the movable block and the fixed block.

[0019] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0020] 1. The utility model forms a mold for forming a rubber round strip by combining a fixed block and a movable block, fixes the rubber round strip by using a model hole formed by splicing arc grooves, and heats the rubber round strip placed in the model hole to completely vulcanize the adhesive, thereby completing the thermal bonding of the rubber round strip; it can be seen that the device has few parts, a simple structure, light weight, is easy to carry, and is easy to operate, and can perform thermal bonding on the rubber round strip at the generator installation site;

[0021] 2. The utility model can lock the movable block by cooperating with the locking nut through the locking screw, and can keep the movable block and the fixed block in close contact without manual long-term compression of the movable block and the fixed block, thereby locking the position of the rubber round strip and ensuring the thermal bonding quality of the rubber round strip. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be described by way of examples with reference to the accompanying drawings, in which:

[0023] Figure 1 A schematic diagram of a cold bonding method;

[0024] Figure 2 A schematic diagram of a thermal bonding method;

[0025] Figure 3 It is a schematic diagram of the movable block in a free state;

[0026] Figure 4 is a schematic diagram showing that the active block is in a locked state;

[0027] Markings in the figure: 1-fixed block; 2-movable block; 21-first arc; 3-heating component; 4-model hole; 41-arc groove; 5-locking screw; 51-locking nut; 52-spring pressure block; 53-compression spring; 54-locking pressure block; 541-second arc; 55-step surface; 6-notch; 7-base; 8-handle. DETAILED DESCRIPTION

[0028] In the description of the present utility model, it should be noted that if the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the utility model product is usually placed when used. It is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model.

[0029] In addition, if the terms "horizontal" or "vertical" appear in the description of the present invention, it does not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0030] In the description of the present utility model, it is also necessary to explain that, unless otherwise clearly stipulated and limited, the terms "set", "installed", "connected" and "connected" should be understood in a broad sense. For example, the connection can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements.

[0031] Example 1

[0032] like Figure 2-Figure 4 As shown, a portable rubber round strip hot bonding device comprises a fixed block 1, one end of the fixed block 1 is hinged to one end of a movable block 2 through a pin shaft, the lower side surface of the movable block 2 and the upper side surface of the fixed block 1 can be completely fitted, that is, the rotation surface of the movable block 2 is a vertical plane, and there will be no gap between the movable block 2 and the fixed block 1 after they are fitted together, so that when the rubber round strip is hot bonded using the movable block 2 and the fixed block 1 as a model, the rubber round strip and the adhesive will not be squeezed into the gap to fill the gap, thereby ensuring that the basic shape and size of the rubber round strip do not change before and after hot bonding or the change is as low as an allowable range.

[0033] Specifically, the lower side surface of the movable block 2 and the upper side surface of the fixed block 1 are both provided with arc grooves 41 that match each other, that is, the position and size of the arc grooves 41 match, so that the arc grooves 41 on the two components can be assembled into a model hole 4. When the rubber round strip is thermally bonded, the position where the rubber round strip needs to be thermally bonded is placed in the model hole 4, and the size of the model hole 4 matches the size of the rubber round strip, and the radial constraint of the rubber round strip forms a radial positioning; the contact static friction between the rubber round strip and the inner wall of the model hole 4 locks the thermal bonding position to achieve axial positioning, thereby stabilizing the position of the rubber round strip; the movable block 2 and the fixed block 1 are both provided with a heating component 3, and the heat generated by the heating component 3 acts on the adhesive at the thermal bonding position to solidify the adhesive, thereby completing the thermal bonding of the rubber round strip.

[0034] It should be noted that if the movable block 2 and the fixed block 1 cannot be completely fitted together, that is, there is a gap between the movable block 2 and the fixed block 1, the arc groove 41 will squeeze the rubber round strip when positioning the rubber round strip, so that the rubber round strip will deform to fill the gap. After the heating component 3 heats and cures the adhesive, the basic shape and size of the rubber round strip will change significantly. Therefore, it is necessary for the movable block 2 and the fixed block 1 to be completely fitted together.

[0035] In this embodiment, a locking screw 5 is directly or indirectly hinged on the fixed block 1, that is, if there is a base 7, the fixed block 1 is fixed on the base 7, and the locking screw 5 is hinged on the base 7 through a pin; or the locking screw 5 is directly hinged on the fixed block 1 through a pin; the rotation plane of the locking screw 5 is not perpendicular to the rotation plane of the movable block 2, and the movable block 2 and the fixed block 1 are both provided with a notch 6 for inserting the locking screw 5, and the locking screw 5 is threadedly connected with a locking nut 51. When the movable block 2 is locked and fully fitted to the fixed block 1, the locking nut 51 can be directly or indirectly pressed against the upper side of the movable block 2, so that the pre-tightening force generated by the locking thread on the locking screw 5 can have a component force on the rotation plane of the movable block 2, that is, to limit the rotation of the movable block 2, thereby achieving a state where the movable block 2 and the fixed block 1 are locked and fully fitted.

[0036] In this embodiment, if the locking screw 5 is directly hinged to the fixed block 1, that is, the locking screw 5 can be hinged to the notch 6 through a pin; if the locking screw 5 is indirectly hinged to the fixed block 1 by being hinged to the base 7, the locking screw 5 can be located in the notch 6 on the fixed block 1 and the movable block 2; the locking screw 5 cooperates with the locking nut 51 to lock the fixed block 1 and the movable block 2, and the locking screw 5 is located in the notch 6; when the fixed block 1 and the movable block 2 are in the unlocked state, the locking screw 5 is not located in the notch 6.

[0037] In this embodiment, a mold for forming a rubber round strip is formed by combining a fixed block 1 and a movable block 2, and the rubber round strip is fixed by a model hole 4 formed by splicing an arc groove 41. The heating device heats the rubber round strip placed in the model hole 4 so that the adhesive is completely vulcanized, thereby completing the thermal bonding of the rubber round strip. It can be seen that the device has few parts, a simple structure, light weight, is easy to carry, and is easy to operate, so that the rubber round strip can be thermally bonded at the generator installation site. The locking screw 5 cooperates with the locking nut 51 to lock the movable block 2, and the movable block 2 and the fixed block 1 can be kept in close contact without manual long-term compression, thereby achieving the locking of the rubber round strip position and ensuring the thermal bonding quality of the rubber round strip.

[0038] Example 2

[0039] On the basis of Example 1, a specific implementation of the "heating component 3" is further proposed.

[0040] A feasible implementation manner is that for the movable block 2, the heating component 3 is arranged directly above the arc groove 41; for the fixed block 1, the heating component 3 is arranged directly below the arc groove 41, so as to reduce the heat transfer distance, so that the temperature of the rubber round strip after heating is not much different from the temperature of the heating component 3, so that the temperature of the thermal bonding position on the rubber round strip can be obtained by temperature detection of the heating component 3, thereby facilitating temperature control.

[0041] In a feasible implementation manner, the heating component 3 is an electric heating plate, and the electric heating plate is connected to an external power supply. The power supply provides continuous energy to the electric heating plate to ensure the temperature of the electric heating plate is stable, so that the rubber round strip is heated stably and the adhesive is cured by heat.

[0042] In a feasible implementation manner, the electric heating plate is connected to an external power source through a controller, and the temperature of the electric heating plate is regulated by regulating the energy input given to the electric heating plate by the controller, thereby regulating the temperature of the thermal bonding position on the rubber round strip.

[0043] Example 3

[0044] On the basis of any one of the implementations in Examples 1-2, a specific implementation of “the locking screw 5 cooperates with the locking nut 51 to lock the movable block 2 and the fixed block 1 ” is further proposed.

[0045] A feasible implementation method is that the rotation plane of the locking screw 5 is parallel to the rotation plane of the movable block 2, so that the pre-tightening force of the locking nut 51 acts on the movable block 2 completely perpendicular to the upper surface of the movable block 2 without other component forces, thereby improving the stability of the movable block 2 being completely close to the fixed block 1 without causing deviation and misalignment.

[0046] In a feasible implementation manner, the outer diameter of the locking nut 51 is larger than the width of the notch 6, so as to ensure that the locking nut 51 can press the movable block 2 and prevent the locking nut 51 from entering the notch 6 and causing locking failure.

[0047] A feasible implementation manner is that a locking pressure block 54, a compression spring 53 and a spring pressure block 52 are sequentially sleeved on the locking screw 5 from bottom to top, and the outer diameter of the locking nut 51 is not less than the inner diameter of the spring pressure block 52; the bottom surface size of the locking pressure block 54 is larger than the width of the notch 6, that is, the clamping force exerted on the movable block 2 comes from the elastic potential energy of the compression spring 53, so that the clamping force is concretized and visualized, that is, the pre-tightening force of the locking nut 51 and the locking screw 5 is the elastic force of the compression spring 53, and the elastic force acts on the movable block 2 to lock the movable block 2.

[0048] A feasible implementation manner, a first arc 21 is provided at the top of the movable block 2 and at the position of the notch 6, and a second arc 541 is provided at the bottom of the locking pressure block 54; and a step surface 55 is provided on the locking screw 5, the size of the step surface 55 is larger than the inner diameter of the locking pressure block 54, and when the locking movable block 2 is completely fitted to the fixed block 1, the step surface 55 is located between the two ends of the first arc 21, and the step surface 55 limits the position of the locking pressure block 54 and limits the locking pressure block 54 to the first arc 21; when locking the movable block 2, after the movable block 2 is in place, it is only necessary to rotate the locking screw 5 so that the second arc 541 of the locking pressure block 54 contacts the first arc 21, and under the guidance of the first arc 21, the locking pressure block 54 pushes the compression spring 53 so that the compression spring 53 has elastic potential energy, until the locking pressure block 54 is pressed on the upper side of the movable block 2, and the locking screw 5 is stuck in the notch 6. For this embodiment, there is no need to adjust the locking nut 51 each time to lock and unlock the movable block 2 during multiple thermal bonding. It is only necessary to manually rotate the locking screw 5, which effectively improves the efficiency of installing and removing the rubber round strips, thereby improving the efficiency of thermally bonding the rubber round strips.

[0049] Example 4

[0050] Based on any one of the implementations in Examples 1-3, a feasible implementation is further proposed.

[0051] In a feasible implementation manner, a handle 8 is fixed on the upper surface of the movable block 2, which is convenient for the operator to rotate the movable block 2 and also convenient for the operator to carry the entire device.

[0052] In a feasible implementation manner, there are multiple arc grooves 41 on the movable block 2 and the fixed block 1, and the sizes of the multiple arc grooves 41 can be consistent or inconsistent, so that multiple numbers and specifications of rubber round strips can be thermally bonded at one time.

[0053] The present invention is not limited to the above-mentioned specific implementation modes, but extends to any new features or any new combination disclosed in this specification, as well as any new method or process steps or any new combination disclosed.

Claims

1. A portable rubber round strip thermal bonding device, characterized in that: The invention comprises a fixed block (1), a movable block (2) being hingedly connected to the fixed block (1), the lower side of the movable block (2) and the upper side of the fixed block (1) being able to completely fit together; the lower side of the movable block (2) and the upper side of the fixed block (1) are both provided with arc grooves (41) that match each other, and the arc grooves (41) on the two components can be assembled into a model hole (4); a heating component (3) is provided in both the movable block (2) and the fixed block (1); a heating component (3) is directly or indirectly provided on the fixed block (1) The movable block (2) and the fixed block (1) are both provided with a notch (6) for receiving the locking screw (5); the locking screw (5) is threadedly connected with a locking nut (51); when the movable block (2) is completely fitted to the fixed block (1), the locking nut (51) can be directly or indirectly pressed against the upper side of the movable block (2).

2. The portable rubber round strip thermal bonding device according to claim 1, characterized in that: For the movable block (2), the heating component (3) is arranged directly above the arc-shaped groove (41); for the fixed block (1), the heating component (3) is arranged directly below the arc-shaped groove (41).

3. The portable rubber round strip thermal bonding device according to claim 1, characterized in that: The heating component (3) is an electric heating plate, which is externally connected to a power source.

4. The portable rubber round strip thermal bonding device according to claim 3 is characterized in that: The electric heating plate is externally connected to a power source via a controller.

5. The portable rubber round strip thermal bonding device according to claim 1, characterized in that: The rotation plane of the locking screw (5) is parallel to the rotation plane of the movable block (2).

6. The portable rubber round strip thermal bonding device according to claim 1, characterized in that: The outer diameter of the locking nut (51) is greater than the width of the notch (6).

7. The portable rubber round strip thermal bonding device according to claim 1, characterized in that: The locking screw (5) is covered with a locking pressure block (54), a compression spring (53) and a spring pressure block (52) in sequence from bottom to top; the outer diameter of the locking nut (51) is not less than the inner diameter of the spring pressure block (52); and the bottom surface size of the locking pressure block (54) is greater than the width of the notch (6).

8. The portable rubber round strip thermal bonding device according to claim 7, characterized in that: A first circular arc (21) is arranged at the top of the movable block (2) and at the position of the notch (6), and a second circular arc (541) is arranged at the bottom of the locking pressing block (54); and a step surface (55) is provided on the locking screw (5), the size of the step surface (55) is larger than the inner diameter of the locking pressing block (54), and when the locking movable block (2) is in a state of being completely attached to the fixed block (1), the step surface (55) is located between the two ends of the first circular arc (21).

9. The portable rubber round strip thermal bonding device according to any one of claims 1 to 8, characterized in that: A handle (8) is fixed on the upper surface of the movable block (2).

10. The portable rubber round strip thermal bonding device according to any one of claims 1 to 8, characterized in that: There are multiple arc-shaped grooves (41) on the movable block (2) and the fixed block (1).

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