Adhesive tape unwinding device

Abstract

The invention provides an adhesive tape unwinding device, and relates to the technical field of adhesive tape unwinding. The outer side face of the support is sleeved with a connecting frame, the connecting frame is fixedly connected with a fixing shaft, the fixing shaft is coaxially and rotationally connected with a rotating shaft, the side, away from the support, of the connecting frame is provided with a clamping and fixing mechanism used for clamping an adhesive tape disc, the clamping and fixing mechanism is fixedly connected with a supporting shell, and a reset spring is arranged in the supporting shell. The reset spring is fixedly connected between the supporting shell and the rotating shaft, the outer side face of the rotating shaft is fixedly sleeved with a rotating plate, the outer side face of the fixed shaft is slidably sleeved with a friction piece, the friction piece abuts against the outer side face of the rotating plate, the fixed shaft is in threaded connection with an adjusting nut, and the adjusting nut can rotate to extrude the friction piece. Therefore, the friction force between the friction piece and the rotating plate is changed. The device has the effect of reducing the probability of excessive adhesive tape phenomenon caused by excessive unwinding of the adhesive tape.

Description

Technical Field

[0001] The invention relates to the technical field of rubber strip unwinding, and in particular to a rubber strip unwinding device. Background Art

[0002] In the production process of doors and windows, rubber strips are used as key sealing materials and are pasted on the edges of doors and windows. The quality and processing of rubber strips directly affect the final performance of the product and user experience. The supply of rubber strips usually relies on special unwinding devices, the core function of which is to stably and efficiently control the release and recovery of rubber strips.

[0003] For example, the Chinese patent with the authorization announcement number CN220316700U and the name of the rubber strip unwinding and storage device, when in use, rubber strip rolls are installed on both material roll installation components. The rubber strip on the first rubber strip roll passes through the active roller, multiple upper rollers and multiple lower rollers with a certain threading process, and is finally attached to other rubber materials. The second rubber strip roll is used as a backup. Through the detection of the storage quantity detection component and the control of the control system, the rubber strip is wound on the upper roller and the lower roller multiple times, and the upper shelf and the lower shelf are separated from each other to realize the storage of the storage component. When the rubber strip is used up, the operator can connect the head of the rubber strip of the second rubber strip roll with the tail of the rubber strip of the first rubber strip roll, so that the production line can continue production using the rubber strip of the second rubber strip roll.

[0004] With regard to the above-mentioned related technologies, during the unwinding process, when the speed of pulling the rubber strip is relatively fast, it is often difficult to accurately control the release amount of the rubber strip due to the inertia caused by the rotation of the rubber strip coil, and excessive unwinding and excess rubber strip are prone to occur. Moreover, when the production task is completed, this section of excess rubber strip cannot automatically return to the rubber strip coil, thereby there is a probability that excess rubber strip will be entangled in the unwinding device, making it difficult to manage the rubber strip, and excess rubber strip will scatter on the ground and stick to dust, thereby reducing the surface quality of the rubber strip, which is not conducive to the rubber strip sealing the edges of doors and windows. Summary of the invention

[0005] In view of this, the present invention provides a rubber strip unwinding device, aiming to solve the problem that it is difficult to accurately control the release amount of the rubber strip, and the excess rubber strip cannot be automatically returned to the rubber strip coil, thereby making it difficult to manage the excess rubber strip.

[0006] In order to solve the above technical problems, the present invention provides a rubber strip unwinding device, including a bracket; a connecting frame is sleeved on the outer side of the bracket, the connecting frame is fixedly connected to a fixed shaft, the fixed shaft is coaxially rotatably connected to a rotating shaft, and a clamping mechanism for clamping the rubber strip disc is arranged on the side of the connecting frame away from the bracket, the clamping mechanism is fixedly connected to a supporting shell, a reset spring is arranged in the supporting shell, the reset spring is fixedly connected between the supporting shell and the rotating shaft, a rotating plate is fixedly sleeved on the outer side of the rotating shaft, a friction member is slidably sleeved on the outer side of the fixed shaft, the friction member abuts against the outer side of the rotating plate, an adjusting nut is threadedly connected to the fixed shaft, and the adjusting nut can squeeze the friction member by rotating, thereby changing the friction force between the friction member and the rotating plate.

[0007] By adopting the above technical solution, the rotational friction between the friction part and the rotating plate can slow down the self-rotation of the clamping mechanism, and can reduce the number of turns of the rubber strip disc due to its own inertia during the process of the rubber strip being pulled and unwound, thereby reducing the probability of excessive unwinding of the rubber strip and the occurrence of excess rubber strip.

[0008] Optionally, the clamping mechanism includes a sleeve, a transmission plate, a connecting rod, a sliding ring, a sliding guide rail, a clamping rod and a fixed rod, the sleeve is fixedly connected to the outer side surface of the support shell, the transmission plate is slidably connected to the sleeve, the rubber strip disc is sleeved on the outside of the sleeve, the connecting rod is slidably arranged inside the sleeve and fixedly connected to the transmission plate, the sliding ring is slidably connected to the inner side surface of the sleeve, the sliding guide rail is fixedly connected to the side surface of the sliding ring, the clamping rod is hinged between the connecting rod and the sliding guide rail, the clamping rod extends out of the side wall of the sleeve to press against the inner side surface of the rubber strip disc, and the fixing rod is fixedly connected to the inner side surface of the sleeve and hinged to the clamping rod.

[0009] By adopting the above technical solution, when the operator places the rubber strip reel on the sleeve, the clamping rod can press and fix the film roll, which simplifies the installation steps of the rubber strip reel and improves the efficiency of continuous unwinding of the rubber strip.

[0010] Optionally, a tension spring is fixedly connected between the support shell and the transmission plate.

[0011] By adopting the above technical solution, the tension spring is used to pull the transmission plate toward the supporting shell, and the transmission plate makes the clamping rod have a tendency to rotate toward the outside of the sleeve through the connecting rod, thereby increasing the fastening force of the clamping rod on the rubber strip disc and improving the stability of the clamping rod in fixing the rubber strip disc.

[0012] Optionally, an unlocking rod is fixedly connected to one end of the connecting rod away from the supporting shell, and a first handle is fixedly connected to one end of the sleeve away from the supporting shell.

[0013] Optionally, a locking gear is fixedly provided on the outer side surface of the support shell, the connecting frame is slidably connected to a locking rod that can mesh with the locking gear, the outer side surface of the locking rod is sleeved with a return spring, the upper surface of the locking rod is fixedly connected to a transmission magnet, the connecting frame is horizontally slidably connected to a sliding frame, the sliding frame is fixedly connected to a driving magnet, and the driving magnet is used to push the transmission magnet downward, the locking rod is fixedly connected to a support rod, the support rod is rotatably connected to a first guide rod, the connecting frame is rotatably connected to a second guide rod, and the rubber strip is wrapped around the outer sides of the first guide rod and the second guide rod.

[0014] By adopting the above technical solution, the operator pulls the rubber strip outward, and at the same time realizes the unwinding function of the rubber strip, so that the pulled out rubber strip can be temporarily locked, so that the pulled out rubber strip is in a free state instead of being pulled back to the bracket, which is convenient for the operator to stick the rubber strip to the surface of the door and window. When the operator finishes sticking the rubber strip, the rubber strip is pulled back to the bracket for reset.

[0015] Optionally, a locking magnet is fixedly connected to the outer side surface of the connecting frame, and an adsorption magnet that can be adsorbed by the locking magnet is fixedly connected to the sliding frame.

[0016] By adopting the above technical solution, when the locking magnet and the adsorption magnet are in contact with each other, the driving magnet is located directly above the transmission magnet. At this time, the locking magnet and the adsorption magnet are used to lock the driving magnet to prevent the driving magnet and the transmission magnet from shifting in the vertical direction.

[0017] Optionally, the connecting frame can rotate around the bracket and slide along the bracket, and the side wall of the connecting frame is threadedly connected with a fastening bolt.

[0018] Optionally, the bottom of the bracket is rotatably connected with a universal caster.

[0019] In summary, compared with the prior art, the present invention includes at least one of the following beneficial technical effects: 1. The rotational friction between the friction member and the rotating plate can slow down the self-rotation of the clamping mechanism and reduce the number of turns of the rubber strip disc due to its own inertia during the unwinding of the rubber strip, thereby reducing the probability of excessive unwinding of the rubber strip and the occurrence of excess rubber strip.

[0020] 2. Use the adjusting nut to change the friction between the friction part and the rotating plate to change the degree of tension of the reset spring, and then change the length of the rubber strip when the rubber strip reel reverses and recycles the rubber strip after use. The length of the rubber strip to be recycled is adjusted according to the distance between the bracket and the operator's different workstations. This prevents the rubber strip recycling distance from being too short, causing the excess rubber strip to fall to the ground or wrap around the bracket, and also prevents the rubber strip recycling distance from being too long and being pulled back into the unwinding device. The operator needs to manually reach into the unwinding device to find the rubber strip for the next processing. This simplifies the operator's operating steps and is conducive to the orderly unwinding of the rubber strip.

[0021] 3. When the operator places the rubber strip reel on the sleeve, the clamping rod can press and fix the film, which simplifies the installation steps of the rubber strip reel and improves the efficiency of continuous unwinding of the rubber strip.

[0022] 4. The operator pulls the rubber strip outward to temporarily lock the pulled rubber strip while unwinding it, so that the pulled rubber strip is in a free state instead of being pulled back to the bracket, which is conducive to the operator sticking the rubber strip to the surface of the door and window. When the operator finishes sticking the rubber strip, he pulls the rubber strip back to the bracket for reset. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 This is a schematic structural diagram of a connecting frame according to an embodiment of the present invention; Figure 3 A cross-sectional view of the internal structure of the supporting housing and the sleeve according to an embodiment of the present invention; Figure 4 It is a structural schematic diagram of a clamping mechanism according to an embodiment of the present invention; Figure 5 This is a schematic structural diagram of a connecting rod, a sliding guide rail and a clamping rod according to an embodiment of the present invention; Figure 6 It is a structural schematic diagram of the connecting frame from another perspective of an embodiment of the present invention.

[0024] Explanation of reference numerals: 1. bracket; 11. connecting frame; 111. locking rod; 112. reset spring; 113. transmission magnet; 114. second guide rod; 115. locking magnet; 116. first connecting part; 117. second connecting part; 12. fixed shaft; 13. rotating shaft; 131. supporting bearing; 14. supporting housing; 141. locking gear; 15. reset spring; 16. rotating plate; 17. friction member; 18. adjusting nut; 19. fastening bolt; 2. rubber Strip disc; 3. Clamping mechanism; 31. Sleeve; 311. First handle; 312. Slide groove; 32. Transmission plate; 321. Tension spring; 322. Inner plate; 323. Outer plate; 33. Connecting rod; 331. Unlocking rod; 34. Sliding ring; 35. Sliding guide rail; 36. Clamping rod; 37. Fixing rod; 38. Rotating pin; 4. Sliding frame; 41. Driving magnet; 42. Support rod; 43. First guide rod; 44. Adsorption magnet; 45. Second handle; 5. Universal caster. DETAILED DESCRIPTION

[0025] To make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the following will be combined with the embodiments of the present invention. Figure 1-Figure 6 , the technical scheme of the embodiment of the present invention is clearly and completely described. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0026] This embodiment provides a strip unwinding device, referring to Figure 1 , Figure 2 and Figure 3 A rubber strip unwinding device includes a bracket 1, a connecting frame 11, a fixed shaft 12, a rotating shaft 13, a clamping mechanism 3, a supporting shell 14, a reset spring 15, a rotating plate 16, a friction member 17 and an adjusting nut 18.

[0027] Reference Figure 1 , Figure 2 and Figure 3 The bracket 1 is erected on a horizontal plane, the connecting frame 11 is sleeved on the outer side of the bracket 1 and is provided with a plurality of them in the vertical direction, the fixed shaft 12 is horizontally fixedly connected to the side of the connecting frame 11, the rotating shaft 13 is horizontally rotatably connected to the fixed shaft 12, the clamping mechanism 3 is provided on the side of the connecting frame 11 away from the bracket 1, the rubber strip disc 2 is sleeved on the outside of the clamping mechanism 3 and is clamped and fixed by the clamping mechanism 3. The supporting shell 14 is fixedly connected to the clamping mechanism 3, the supporting shell 14 is a cylindrical shell, the rotating shaft 13 extends into the supporting shell 14, the reset spring 15 is located in the supporting shell 14, and the two ends of the reset spring 15 are respectively fixedly connected to the inner side of the supporting shell 14 and the outer side of the rotating shaft 13.

[0028] Reference Figure 2 and Figure 3 The rotating plate 16 is fixedly sleeved on the outer side of the rotating shaft 13, and the rotating plate 16 is rotatably connected to the supporting shell 14. The friction member 17 is slidably sleeved on the outer side of the fixed shaft 12, and the friction member 17 is located between the rotating plate 16 and the connecting frame 11, and the friction member 17 abuts against the rotating plate 16. The adjusting nut 18 is threadedly connected to the fixed shaft 12, and the adjusting nut 18 is located between the friction member 17 and the connecting frame 11. The adjusting nut 18 rotates to squeeze the friction member 17, so that there is a relative rotation friction force between the friction member 17 and the rotating plate 16, and the magnitude of the friction force between the friction member 17 and the rotating plate 16 can be changed by rotating the adjusting nut 18.

[0029] The operator fastens the rubber strip disc 2 on the clamping mechanism 3, and then pulls the rubber strip to the work station. During the unwinding process of the rubber strip, the clamping mechanism 3 is driven to rotate, and the clamping mechanism 3 drives the support shell 14 to rotate synchronously. During the rotation of the support shell 14, the reset spring 15 is gradually tightened, and the tension of the reset spring 15 gradually increases until the friction between the friction member 17 and the rotating plate 16 is equal to the tension of the reset spring 15. Since the rotating shaft 13 is fixedly connected to the rotating plate 16, the support shell 14 pulls the rotating shaft 13 and the rotating plate 16 to rotate through the reset spring 15, and the rotating plate 16 rotates around the rotating shaft 13 relative to the friction member 17. After the rubber strip is used, the reset spring 15 pulls the support shell 14 to reverse, and the support shell 14 drives the rubber strip disc 2 to reverse through the clamping mechanism 3, so that the rubber strip is retracted to the vicinity of the bracket 1.

[0030] The rotational friction between the friction member 17 and the rotating plate 16 can slow down the self-rotation of the clamping mechanism 3, and can reduce the number of turns of the rubber strip disc 2 due to its own inertia during the unwinding of the rubber strip, thereby reducing the probability of excessive unwinding of the rubber strip and the occurrence of excess rubber strip. In addition, since the friction force between the friction member 17 and the rotating plate 16 is equal to the tensioning force of the reset spring 15, the magnitude of the friction force between the friction member 17 and the rotating plate 16 is changed by adjusting the nut 18 to change the degree of tension of the reset spring 15, thereby changing the length of the rubber strip that the rubber strip disc 2 reverses and recycles after the rubber strip is used. The length of the rubber strip that is recovered is adjusted according to the distance between the bracket 1 and the operator's different workstations, which not only prevents the phenomenon that the rubber strip recovery distance is too short and the excess rubber strip is still scattered on the ground or wrapped around the bracket 1, but also prevents the phenomenon that the rubber strip recovery distance is too long and is pulled back to the inside of the unwinding device, and the operator needs to manually reach into the unwinding device to find the rubber strip in the next processing, which simplifies the operator's operating steps and is conducive to the orderly unwinding of the rubber strip.

[0031] Reference Figure 1 and Figure 2The connecting frame 11 can rotate around the bracket 1 and slide along the bracket 1. The side wall of the connecting frame 11 is threadedly connected with a fastening bolt 19. The fastening bolt 19 is rotated to fix the connecting frame 11 to the outer side of the bracket 1. The bottom of the bracket 1 is rotatably connected with a universal caster 5, so that the operator can drive the bracket 1 to move according to the position of different workstations. After the movement is completed, the universal caster 5 can be locked. Reference Figure 3 , Figure 4 and Figure 5 The clamping mechanism 3 includes a sleeve 31, a transmission plate 32, a connecting rod 33, a sliding ring 34, a sliding guide rail 35, a clamping rod 36 and a fixing rod 37. The sleeve 31 is arranged at one end of the support housing 14 away from the bracket 1, and the sleeve 31 is coaxially fixedly connected to the support housing 14. The transmission plate 32 can slide along the axial direction of the sleeve 31. The transmission plate 32 is composed of an inner plate 322 and an outer plate 323 that are fixedly connected to each other. The inner plate 322 is located inside the sleeve 31, and the outer plate 323 is located outside the sleeve 31. The rubber strip disc 2 is sleeved on the outside of the sleeve 31 and abuts against the side of the outer plate 323.

[0032] Reference Figure 3 , Figure 4 and Figure 5 , three connecting rods 33 are provided and fixedly connected to the inner plate 322, the connecting rods 33 are parallel to the sleeve 31 and are arranged in a circular array around the central axis of the sleeve 31. The sliding ring 34 is located on the outside of the three connecting rods 33 and is slidably connected to the inner side of the sleeve 31. Three sliding guide rails 35 are provided and fixedly connected to the side of the sliding ring 34, and the sliding guide rails 35 and the connecting rods 33 are arranged one by one along the radial direction of the sleeve 31. The connecting rods 33 and the sliding guide rails 35 are both provided with waist-shaped grooves, and the clamping rods 36 are hinged between the connecting rods 33 and the sliding guide rails 35 through the waist-shaped grooves. A plurality of clamping rods 36 are provided along the axial and circumferential directions of the sleeve 31, and a sliding groove 312 is provided on the side wall of the sleeve 31. The clamping rod 36 extends out of the sleeve 31 through the sliding groove 312 to abut against the inner side of the rubber strip disc 2. The fixing rod 37 is fixedly connected to the inner side surface of the sleeve 31 , and the fixing rod 37 is hinged to the middle part of the clamping rod 36 through a rotating pin 38 .

[0033] When the operator installs the rubber disc 2 on the clamping mechanism 3, the operator places the rubber disc 2 on the sleeve 31 and abuts against the outer plate 323. The rubber disc 2 pushes the outer plate 323 to move close to the support shell 14. The outer plate 323 pulls the connecting rod 33 through the inner plate 322 to move close to the support shell 14. During the movement of the connecting rod 33, the clamping rod 36 is driven to rotate counterclockwise around the rotating pin 38 (refer to Figure 5), that is, the clamping rod 36 rotates and opens toward the outside of the sleeve 31 to abut against the inner side of the rubber strip disc 2. The operator continues to push the rubber strip disc 2 to increase the tightening force of the clamping rod 36 on the rubber strip disc 2. As a result, when the operator places the rubber strip disc 2 on the sleeve 31, the clamping rod 36 can press and fix the film roll, simplifying the installation steps of the rubber strip disc 2 and improving the efficiency of continuous unwinding of the rubber strip.

[0034] In addition, an air shaft or a mechanical shaft can be used to fix the rubber strip disc 2. However, the air shaft fixation method requires an additional connection to an external air system to inflate the shaft, which limits the flexibility of the winding device. The mechanical shaft is more complicated to operate than the clamping mechanism 3, and requires the operator to manually twist the handle on the shaft multiple times to achieve the tightening effect, which reduces the efficiency of the rubber strip unwinding.

[0035] Reference Figure 3 The rotating shaft 13 passes through the supporting housing 14 and enters the sleeve 31, and a supporting bearing 131 is provided between the sleeves 31. A tension spring 321 is fixedly connected between the supporting housing 14 and the transmission plate 32, and the tension spring 321 is used to pull the transmission plate 32 toward the supporting housing 14. The transmission plate 32 makes the clamping rod 36 have a tendency to rotate toward the outside of the sleeve 31 through the connecting rod 33, thereby increasing the fastening force of the clamping rod 36 on the rubber disc 2 and improving the stability of the clamping rod 36 in fixing the rubber disc 2.

[0036] Reference Figure 3 and Figure 4 The end of the connecting rod 33 away from the supporting shell 14 is fixedly connected to the unlocking rod 331, and the end of the sleeve 31 away from the supporting shell 14 is fixedly connected to the first handle 311. The operator hooks the first handle 311 with four fingers, pushes the unlocking rod 331 toward the inside of the sleeve 31 with the palm, and the unlocking rod 331 drives the connecting rod 33 to move close to the transmission plate 32. When the connecting rod 33 moves, it drives the clamping rod 36 to rotate toward the inside of the sleeve 31, so that the clamping rod 36 is separated from the rubber disc 2, thereby the rubber disc 2 can be removed, and the operation is simple.

[0037] Reference Figure 2 , Figure 3 and Figure 6The outer side surface of the supporting shell 14 is fixedly sleeved with a locking gear 141, the connecting frame 11 is horizontally fixedly connected with a first connecting portion 116 and a second connecting portion 117, the connecting frame 11 is vertically slidably connected with a locking rod 111 that can mesh with the locking gear 141 through the first connecting portion 116, and the outer side surface of the locking rod 111 is sleeved with a reset spring 112. The upper surface of the locking rod 111 is fixedly connected with a transmission magnet 113, the connecting frame 11 is horizontally slidably connected with a sliding frame 4, the sliding frame 4 is fixedly connected with a driving magnet 41 and a second handle 45, the driving magnet 41 is located directly above the driving magnet 113, and the polarity of the inner side surfaces of the driving magnet 113 and the driving magnet 41 are the same. The locking rod 111 is fixedly connected to the support rod 42, and the support rod 42 is rotatably connected to the first guide rod 43. The connecting frame 11 is rotatably connected to two second guide rods 114 through the second connecting portion 117. The second guide rod 114 is located above the first guide rod 43, and the two second guide rods 114 are located on both sides of the first guide rod 43. The rubber strip is wrapped around the outer side surfaces of the first guide rod 43 and the second guide rod 114, and the rubber strip is located below the first guide rod 43 and above the second guide rod 114.

[0038] When the operator pulls the rubber strip outward, the rubber strip pulls the first guide rod 43 upward, and the first guide rod 43 drives the locking rod 111 to move upward through the support rod 42, so that the locking rod 111 is separated from the locking gear 141, and the transmission magnet 113 moves close to the driving magnet 41. At this time, the support shell 14 can rotate freely, and the operator can continue to pull the rubber strip outward. After the rubber strip is pulled to the required length, the operator loosens the rubber strip. At this time, the untightened rubber strip does not provide an upward pulling force to the first guide rod 43, thereby driving the magnet 41 to push the transmission magnet 113 downward, and the locking rod 111 and the transmission magnet 113 move synchronously and mesh with the locking gear 141, thereby limiting the rotation of the locking gear 141, and the reset spring 112 is compressed. As a result, the rotation of the support shell 14 is locked, and the reset spring 15 cannot pull the rubber strip back to the bracket 1 through the support shell 14. When the adhesive strip is pasted, the operator pulls the second handle 45 to move the sliding frame 4 horizontally, so that the driving magnet 41 and the transmission magnet 113 are misaligned in the vertical direction, and the compressed reset spring 112 pushes the locking rod 111 upward, so that the locking rod 111 disengages from the locking gear 141. At this time, the reset spring 15 can drive the adhesive strip to be pulled back to the bracket 1 through the support shell 14.

[0039] By pulling the rubber strip outward, the operator can temporarily lock the pulled rubber strip while realizing the unwinding function of the rubber strip, so that the pulled rubber strip is in a free state instead of being pulled back to the bracket 1, which is convenient for the operator to stick the rubber strip to the surface of the door and window. When the operator finishes sticking the rubber strip, the rubber strip is pulled back to the bracket 1 for reset.

[0040] Reference Figure 6 The outer side surface of the connecting frame 11 is fixedly connected with a locking magnet 115, and the sliding frame 4 is fixedly connected with an adsorption magnet 44 that can be adsorbed by the locking magnet 115. When the locking magnet 115 and the adsorption magnet 44 are in contact with each other, the driving magnet 41 is located directly above the transmission magnet 113. At this time, the locking magnet 115 and the adsorption magnet 44 are used to lock the driving magnet 41 to prevent the driving magnet 41 and the transmission magnet 113 from offsetting in the vertical direction.

[0041] The implementation principle of a rubber strip unwinding device in an embodiment of the present invention is: the operator places the rubber strip disc 2 on the sleeve 31 and pushes the rubber strip disc 2 to move close to the transmission plate 32, the transmission plate 32 pulls the connecting rod 33 to move close to the supporting shell 14, and the connecting rod 33 drives the clamping rod 36 to rotate, so that the clamping rod 36 rotates toward the outside of the sleeve 31 and opens to abut against the inner side surface of the rubber strip disc 2 to fix the rubber strip disc 2.

[0042] When the operator pulls the rubber strip outward, the rubber strip pulls the first guide rod 43 upward, and the first guide rod 43 drives the locking rod 111 to move upward through the support rod 42, so that the locking rod 111 is separated from the locking gear 141, and the transmission magnet 113 moves close to the driving magnet 41. At this time, the rubber strip is unwound and drives the clamping mechanism 3 to rotate, and the clamping mechanism 3 drives the support shell 14 to rotate synchronously. During the rotation of the support shell 14, the reset spring 15 is gradually tightened, and the tension of the reset spring 15 gradually increases until the friction between the friction member 17 and the rotating plate 16 is equal to the tension of the reset spring 15. After the rubber strip is pulled to the required length, the rubber strip is released, and the driving magnet 41 pushes the transmission magnet 113 downward, and the locking rod 111 and the transmission magnet 113 move synchronously and mesh with the locking gear 141, thereby limiting the rotation of the locking gear 141.

[0043] After the adhesive strip is pasted, the operator moves the sliding frame 4 horizontally, so that the driving magnet 41 and the transmission magnet 113 are misaligned in the vertical direction. The compressed reset spring 112 pushes the locking rod 111 upward, so that the locking rod 111 disengages from the locking gear 141. At this time, the reset spring 15 can drive the adhesive strip to be pulled back to the bracket 1 through the support shell 14.

[0044] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] The above are preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A rubber strip unwinding device, comprising a bracket (1), characterized in that: A connecting frame (11) is sleeved on the outer side surface of the bracket (1), the connecting frame (11) is fixedly connected to a fixed shaft (12), the fixed shaft (12) is coaxially rotatably connected to a rotating shaft (13), a clamping mechanism (3) for clamping the rubber strip disc (2) is provided on a side of the connecting frame (11) away from the bracket (1), the clamping mechanism (3) is fixedly connected to a supporting shell (14), a reset spring (15) is provided in the supporting shell (14), and the reset spring (15) is fixedly connected to the supporting shell A rotating plate (16) is fixedly sleeved on the outer side of the rotating shaft (13), a friction piece (17) is slidably sleeved on the outer side of the fixed shaft (12), the friction piece (17) abuts against the outer side of the rotating plate (16), and an adjusting nut (18) is threadedly connected to the fixed shaft (12). The adjusting nut (18) can be rotated to squeeze the friction piece (17), thereby changing the friction force between the friction piece (17) and the rotating plate (16).

2. The adhesive strip unwinding device according to claim 1, characterized in that: The clamping mechanism (3) comprises a sleeve (31), a transmission plate (32), a connecting rod (33), a sliding ring (34), a sliding guide rail (35), a clamping rod (36) and a fixing rod (37); the sleeve (31) is fixedly connected to the outer side of the supporting shell (14); the transmission plate (32) is slidably connected to the sleeve (31); the rubber strip disc (2) is sleeved on the outer side of the sleeve (31); the connecting rod (33) is slidably arranged inside the sleeve (31) and connected to the transmission plate (32) is fixedly connected, the sliding ring (34) is slidably connected to the inner side surface of the sleeve (31), the sliding guide rail (35) is fixedly connected to the side surface of the sliding ring (34), the clamping rod (36) is hinged between the connecting rod (33) and the sliding guide rail (35), the clamping rod (36) extends out of the side wall of the sleeve (31) to press against the inner side surface of the rubber strip disc (2), and the fixing rod (37) is fixedly connected to the inner side surface of the sleeve (31) and is hinged to the clamping rod (36).

3. The adhesive strip unwinding device according to claim 2, characterized in that: A tension spring (321) is fixedly connected between the support housing (14) and the transmission plate (32).

4. The adhesive strip unwinding device according to claim 2, characterized in that: An end of the connecting rod (33) away from the supporting shell (14) is fixedly connected to a release rod (331), and an end of the sleeve (31) away from the supporting shell (14) is fixedly connected to a first handle (311).

5. The adhesive strip unwinding device according to claim 1, characterized in that: The outer side surface of the support shell (14) is fixedly sleeved with a locking gear (141); the connecting frame (11) is slidably connected to a locking rod (111) that can mesh with the locking gear (141); the outer side surface of the locking rod (111) is sleeved with a return spring (112); the upper surface of the locking rod (111) is fixedly connected to a transmission magnet (113); the connecting frame (11) is horizontally slidably connected to a sliding frame (4); the sliding frame (4) is fixedly connected to a driving magnet (41); the driving magnet (41) is used to push the transmission magnet (113) downward; the locking rod (111) is fixedly connected to a support rod (42); the support rod (42) is rotatably connected to a first guide rod (43); the connecting frame (11) is rotatably connected to a second guide rod (114); and the rubber strip is wound around the outer side surfaces of the first guide rod (43) and the second guide rod (114).

6. The adhesive strip unwinding device according to claim 5, characterized in that: The outer side surface of the connecting frame (11) is fixedly connected to a locking magnet (115), and the sliding frame (4) is fixedly connected to an adsorption magnet (44) that can be adsorbed by the locking magnet (115).

7. The adhesive strip unwinding device according to claim 1, characterized in that: The connecting frame (11) can rotate around the bracket (1) and can slide along the bracket (1), and a fastening bolt (19) is threadedly connected to the side wall of the connecting frame (11).

8. The adhesive strip unwinding device according to claim 1, characterized in that: The bottom of the bracket (1) is rotatably connected to a universal caster (5).

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