Anti-adhesion device for back-adhesive rubber flashing of a deformation joint
By using anti-adhesion blocks and anti-adhesion pressure rollers in the production process of rubber waterstops, the problem of adhesion of back-adhesive rubber waterstops for expansion joints at high temperatures has been solved, improving the product qualification rate and reducing labor costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QINGDAO HAILIWEI POLYMER TECH CO LTD
- Filing Date
- 2025-06-23
- Publication Date
- 2026-06-05
AI Technical Summary
Back-adhesive rubber waterstops for expansion joints are prone to sticking together at high temperatures, leading to product defects during production. The conveying speed needs to be increased to avoid sticking, but this affects the product structure.
The anti-adhesion block and anti-adhesion pressure roller mechanism, including a vertical support plate, sliding block, roller and drive assembly, are used to prevent the center of the rubber waterstop from sticking together. The anti-adhesion block initially prevents sticking, and the anti-adhesion pressure roller mechanism further prevents sticking.
Effectively prevents the center of the back-adhesive rubber waterstop used in expansion joints from sticking together, improves the product qualification rate, reduces the need for manual cutting of sticky products, and lowers labor costs.
Smart Images
Figure CN224323534U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of rubber waterstop production technology, specifically to an anti-adhesion device for a back-adhesive rubber waterstop for expansion joints. Background Technology
[0002] Currently, the production of waterstops involves connecting an extruder to an extrusion die via a connecting flange, installing a specific extrusion nozzle on the extrusion die, and then conveying the waterstop to a drying tunnel for vulcanization via a conveyor belt.
[0003] The cross-section of the back-adhesive rubber waterstop for expansion joints is U-shaped at the center. When the back-adhesive rubber waterstop is first extruded, it is at a high temperature. Due to the high temperature, the middle parts of the back-adhesive rubber waterstop tend to stick together after contact. During the production process, in order to ensure normal extrusion, the conveying speed is generally slightly faster than the extrusion speed. Therefore, after the back-adhesive rubber waterstop is extruded from the extruder and reaches the conveying device, it undergoes a certain degree of stretching. Under this stretching, the center parts of the back-adhesive rubber waterstop change from a state of non-contact to a state of contact, causing the center parts of the back-adhesive rubber waterstop to stick together, resulting in a change in the waterstop structure and thus producing a substandard product. Utility Model Content
[0004] To address the problems of the prior art, this utility model provides an anti-adhesion device for back-adhesive rubber waterstops for expansion joints, which can prevent the center of the back-adhesive rubber waterstops for expansion joints from sticking together, thereby improving the pass rate of the back-adhesive rubber waterstops for expansion joints.
[0005] To achieve the above objectives, this utility model provides the following technical solution: an anti-adhesion device for a back-adhesive rubber waterstop for expansion joints, comprising an extrusion die, an anti-adhesion block fixedly connected to the extrusion die for initially preventing adhesion in the middle of the rubber waterstop, and an anti-adhesion pressure roller mechanism provided downstream of the extrusion die for further preventing adhesion in the middle of the rubber waterstop. The anti-adhesion pressure roller mechanism includes a vertical support plate, a sliding block slidably connected to the vertical support plate, a fixed shaft fixedly connected to the sliding block, and a roller rotatably connected to the fixed shaft. A fixed assembly for connecting a rubber waterstop conveyor is provided at the lower end of the vertical support plate, and a driving assembly for driving the roller to move up and down is provided at the upper end of the vertical support plate.
[0006] The above structural design can prevent the center of the back-adhesive rubber waterstop for expansion joints from sticking together, thereby improving the pass rate of the back-adhesive rubber waterstop for expansion joints.
[0007] Preferably, two sets of vertical support plates are provided and arranged symmetrically about the roller.
[0008] The above structural design can increase the support for the vertical support plate.
[0009] Preferably, the fixing assembly includes an upper clamping plate fixedly connected to the vertical support plate, a lower clamping plate disposed opposite to the upper clamping plate, and a clamping bolt passing through the lower clamping plate, wherein the bottom end of the vertical support plate has a threaded hole matching the clamping bolt.
[0010] The above structural design makes it easy for workers to install this device on the roller conveyor.
[0011] Preferably, the drive assembly includes a first support plate fixedly connected to the sliding block, an adjusting screw rotatably connected to the first support plate, and a second support plate connected to the adjusting screw via threads, the second support plate being fixedly connected to the upper end of the vertical support plate.
[0012] With the above structural design, the operator can move the roller by turning the adjusting screw, making the operation simple and convenient.
[0013] Preferably, the lower end of the adjusting screw is fixedly connected to a short rod, and the lower end of the short rod is fixedly connected to a rotating block. The first support plate has an installation groove inside that matches the short rod and the rotating block. The rotating block is cylindrical, hemispherical, or frustum-shaped.
[0014] The above structural design prevents the adjusting screw from detaching from the first support plate while reducing the frictional force experienced by the rotating block during rotation.
[0015] Compared with the prior art, the beneficial effects of this utility model are:
[0016] This device can prevent the center of the back-adhesive rubber waterstop used in expansion joints from sticking together, thereby improving the pass rate of the back-adhesive rubber waterstop used in expansion joints. It also eliminates the need to manually cut the sticky waterstop after vulcanization, thus reducing labor costs. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of this utility model;
[0018] Figure 2 This is a schematic diagram of the structure of this utility model from the right side;
[0019] Figure 3 This is a schematic diagram of the extrusion die of this utility model; Detailed Implementation
[0020] Please see Figure 1 , Figure 2 , Figure 3 This utility model provides a technical solution: an anti-adhesion device for a back-adhesive rubber waterstop for expansion joints, including an extrusion die 8. An anti-adhesion block 1 for initially preventing adhesion in the middle of the rubber waterstop is fixedly connected to the extrusion die 8. Downstream of the extrusion die 8, an anti-adhesion pressure roller mechanism for further preventing adhesion in the middle of the rubber waterstop is provided. The anti-adhesion pressure roller mechanism includes a vertical support plate 3, a sliding block 42 slidably connected to the vertical support plate 3, a fixed shaft 41 fixedly connected to the sliding block 42, and a roller 4 rotatably connected to the fixed shaft 41. A fixing component for connecting a rubber waterstop conveyor is provided at the lower end of the vertical support plate 3, and a driving component for driving the roller 4 to move up and down is provided at the upper end of the vertical support plate 3.
[0021] In a rubber extruder 91, the extrusion die 8 is the die part used to determine the shape and size of the extruded semi-finished product. The extrusion die 8 is typically installed in front of the die head of the rubber extruder, and its design and shape directly affect the final shape and size of the extrudate. The extrusion die 8 is a removable die.
[0022] The width of the anti-adhesion block 1 matches the size of the opening at the center of the expansion joint back-adhesive rubber waterstop 9.
[0023] The shape of the anti-adhesion block 1 matches the shape of the opening at the center of the back-adhesive rubber waterstop 9 for expansion joints.
[0024] Two sets of vertical support plates 3 are arranged symmetrically about the roller 4, two sets of sliding blocks 42 are arranged, and one sliding block 42 is fixed at each end of the fixed shaft 41.
[0025] The fixing assembly includes an upper clamping plate 51 fixedly connected to the vertical support plate 3, a lower clamping plate 52 opposite to the upper clamping plate 51, and clamping bolts 53 passing through the lower clamping plate 52. The bottom end of the vertical support plate 3 has a threaded hole 54 matching the clamping bolts 53. The left end of the lower clamping plate 52 is provided with clamping bolts 53. In order to increase the stability of the lower clamping plate 52, a sleeve plate 55 is fixedly connected to the left end of the lower clamping plate 52. Two sets of clamping bolts 53 are provided. The clamping bolts 53 pass through the sleeve plate 55 and the left end of the lower clamping plate 52 in sequence. A diagonal brace is provided between the lower clamping plate 52 and the sleeve plate 55.
[0026] Anti-slip rubber pads are fixedly connected to both the upper clamping plate 51 and the lower clamping plate 52 to further enhance the clamping force of the upper clamping plate 51 and the lower clamping plate 52 and prevent the device from moving back and forth.
[0027] The drive assembly includes a first support plate 61 fixedly connected to the sliding block 42, an adjusting screw 63 rotatably connected to the first support plate 61, and a second support plate 62 connected to the adjusting screw 63 by threads. The second support plate 62 is fixedly connected to the upper end of the vertical support plate 3.
[0028] The lower end of the adjusting screw 63 is fixedly connected to the short rod 64, and the lower end of the short rod 64 is fixedly connected to the rotating block 65. The first support plate 61 has an installation groove inside that matches the short rod 64 and the rotating block 65. The rotating block 65 is cylindrical, hemispherical or frustum-shaped.
[0029] To improve the effectiveness of this device, a coating layer that does not adhere to the rubber is sprayed onto the outer walls of the anti-adhesion block 1, the vertical support plate 3, and the roller 4, such as a polytetrafluoroethylene (PTFE) coating.
[0030] Working Principle: During the production of the rubber waterstop, the rubber waterstop is extruded by the rubber extruder 91, and then conveyed to the rubber vulcanizing equipment 93 via the rubber waterstop conveyor 92 for vulcanization treatment. First, the operator installs the extrusion die 8 onto the head of the rubber extruder and the anti-adhesion roller mechanism onto the rubber waterstop conveyor. The operator first sets up the anti-adhesion roller mechanism on the brackets on both sides of the rubber waterstop conveyor, with the upper clamping plate 51 fitting against the brackets on both sides of the conveyor. Then, the operator installs the lower clamping plate 52, passing the clamping bolts 53 sequentially through the sleeve plate 55 and the left end of the lower clamping plate 52. The operator then uses a wrench to insert the clamping bolts 53 into the threaded holes 54 at the bottom of the vertical support plate 3. When the back-adhesive rubber waterstop 9 reaches the expansion joint, the deformation... The center of the back-adhesive rubber waterstop 9 for the seam is blocked by the anti-adhesion block 1. The operator then rotates the adjusting screw 63. Under the action of the thread, the adjusting screw 63 moves down. With the setting of the short rod 64 and the rotating block 65, the lower end of the adjusting screw 63 slips on the first support plate 61. The adjusting screw 63 moves down with the first support plate 61. The first support plate 61 then drives the sliding block 42 to move down. The roller 4 can then move down. The circumferential wall of the roller 4 comes into contact with the back-adhesive rubber waterstop 9 for the expansion joint, restricting the back-adhesive rubber waterstop 9 for the expansion joint and preventing the center opening of the back-adhesive rubber waterstop 9 from contacting.
[0031] The structures, proportions, and sizes illustrated in the accompanying drawings are merely for illustrative purposes and to aid those skilled in the art in understanding and reading the content disclosed herein. They are not intended to limit the scope of this utility model and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this utility model, should still fall within the scope of the technical content disclosed herein. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this utility model's implementation.
[0032] The present invention has been described above with reference to preferred embodiments, but the scope of protection of the present invention is not limited thereto. All technical solutions falling within the scope of the claims are within the scope of protection of the present invention. Various modifications can be made to the present invention, and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way.
Claims
1. A back-adhesive rubber waterstop device for expansion joints, comprising an extrusion die (8), characterized in that: An anti-adhesion block (1) is fixedly connected to the extrusion die (8) to initially prevent the rubber waterstop from sticking together in the middle. Downstream of the extrusion die (8) is an anti-adhesion pressure roller mechanism to further prevent the rubber waterstop from sticking together in the middle. The anti-adhesion pressure roller mechanism includes a vertical support plate (3), a sliding block (42) slidably connected to the vertical support plate (3), a fixed shaft (41) fixedly connected to the sliding block (42), and a roller (4) rotatably connected to the fixed shaft (41). The lower end of the vertical support plate (3) is provided with a fixed component for connecting the rubber waterstop conveyor, and the upper end of the vertical support plate (3) is provided with a driving component for driving the roller (4) to move up and down.
2. The anti-adhesion device for a back-adhesive rubber waterstop for expansion joints according to claim 1, characterized in that: The vertical support plate (3) is provided in two sets and is symmetrical about the roller (4).
3. The anti-adhesion device for a back-adhesive rubber waterstop for expansion joints according to claim 1, characterized in that: The fixing assembly includes an upper clamping plate (51) fixedly connected to the vertical support plate (3), a lower clamping plate (52) disposed opposite to the upper clamping plate (51), and a clamping bolt (53) passing through the lower clamping plate (52). The bottom end of the vertical support plate (3) has a threaded hole (54) that matches the clamping bolt (53).
4. The anti-adhesion device for a back-adhesive rubber waterstop for expansion joints according to any one of claims 1 to 3, characterized in that: The drive assembly includes a first support plate (61) fixedly connected to the sliding block (42), an adjusting screw (63) rotatably connected to the first support plate (61), and a second support plate (62) connected to the adjusting screw (63) by a thread. The second support plate (62) is fixedly connected to the upper end of the vertical support plate (3).
5. The anti-adhesion device for a back-adhesive rubber waterstop for expansion joints according to claim 4, characterized in that: The lower end of the adjusting screw (63) is fixedly connected to a short rod (64), and the lower end of the short rod (64) is fixedly connected to a rotating block (65). The first support plate (61) has an installation groove inside that matches the short rod (64) and the rotating block (65). The rotating block (65) is cylindrical, hemispherical, or frustum-shaped.