Unwinding and preheating device for reinforcing line of EPDM rubber sealing strip

Abstract

The utility model discloses an unwinding and preheating device for a reinforcing line of an EPDM (Ethylene-Propylene-Diene Monomer) rubber sealing strip and belongs to the technical field of sealing rubber strip production equipment. Comprising two unwinding structures, a preheating structure, a side-by-side traction structure and a rack, each unwinding structure comprises a wire coil, a front traction mechanism and a conveying mechanism, the two unwinding structures are arranged on the rack and work simultaneously or only one of the two unwinding structures works, and the two conveying mechanisms are arranged side by side up and down; the two wire coils are arranged front and back side by side; the two front traction mechanisms are located over the two wire coils respectively, are arranged side by side in a front-back mode and can be adjusted on the machine frame in a front-back mode. Reinforcing wires output by the front wire coils pass through the corresponding front traction mechanisms to the upper conveying mechanism, and reinforcing wires output by the rear wire coils pass through the corresponding front traction mechanisms to the lower conveying mechanism. The side-by-side traction structure is arranged between the unwinding structure and the preheating structure, located right behind the position between the two conveying mechanisms and used for pulling the two reinforcing wires backwards side by side in the left-right direction.

Description

Technical Field

[0001] This utility model belongs to the technical field of sealing strip production equipment, and specifically relates to a device for opening and preheating the reinforcing line of an EPDM rubber sealing strip. Background Technology

[0002] With the development of the automotive industry, the number of vehicles on the streets is increasing, and cars have become an indispensable means of transportation for every household. Correspondingly, the automotive parts that match these vehicles are becoming increasingly important. Among them, the sealing strips used in various parts of the vehicle, such as the doors and hood, are crucial for ensuring the vehicle's airtightness. Automotive sealing strips are important accessories on automobiles. They fill the gaps between body components and have functions such as shock absorption, waterproofing, dustproofing, sound insulation, and decoration. High-quality automotive sealing strips can improve the comfort of the driving experience and protect the vehicle body.

[0003] In the prior art, in order to increase the strength of the rubber sealing strip, it is necessary to set a reinforcing line inside it. The reinforcing line can be a fiber line, copper wire or rubber strip, etc., and the reinforcing line is added during extrusion.

[0004] For example, patent application number CN201710146733.X discloses a sealing strip structure for an automobile sunroof, characterized in that it includes: a sealing strip with a "U"-shaped cross-section, a horizontal stop in the middle of the opening of the sealing strip, the horizontal stop dividing the cross-section of the sealing strip into a "]"-shaped locking interface on one side and a "D"-shaped cavity with an arc-shaped edge on the other side, and a number of buffer blocks on the wall of the horizontal stop on one side of the cavity, a glass fiber line in the middle of the horizontal stop along the length of the sealing strip, an inclined water guide strip at the bottom of the outer wall of the cavity near the horizontal stop, and locking blocks on the inner walls of both sides of the locking interface respectively in the direction toward the center of the locking interface, and the two locking blocks are arranged opposite each other.

[0005] For example, patent application number CN201821795320.0 discloses a sealing strip for a slewing bearing, including a sealing strip body and a sealing lip. The sealing lip is connected to the tail of the sealing strip body, and an installation platform is provided at the tail of the sealing strip body. The sealing lip includes a waist and a lip. One end of the waist is connected to the tail of the sealing strip body, and the other end is connected to the lip. The connection between the waist and the lip is an inwardly curved bend. An anti-stretch cord is provided inside the sealing strip body.

[0006] For example, patent application number CN202323056018.7 discloses a double-sealed water-blocking sealing strip, characterized by: an integrally foamed upper adhesive strip and a lower snap-fitting part, the upper adhesive strip having a lower density than the lower snap-fitting part, the upper adhesive strip being connected to the center of the upper end face of the lower snap-fitting part, the upper adhesive strip having a bent structure, the upper head and bending point of the upper adhesive strip being located on both sides of the connection center with the lower snap-fitting part, the lower snap-fitting part having one or more fiber lines along its length, the lower snap-fitting part having a snap-fitting slot for engaging a guide rail facing downwards, the inner wall of the snap-fitting slot having horizontal ribs or grooves on both sides of the guide rail corresponding to the snap-fitting slot grooves or snap-fit ​​ribs. A fiber line is located in the lower part of the lower snap-fitting part below the center position connected to the upper adhesive strip.

[0007] In existing technologies, the reinforcing wire is typically fed to the extruder via a guide and preheating device, achieving preheating simultaneously with traction. The preparation process of the sealing strip can be found in the description of application number CN202211670348.2.

[0008] The traction structure can be found in patent application number CN202021960817.0, which discloses an unwinding device for sunroof sealing strip fiber thread, including a support base and a positioning baffle. The positioning baffle is fixedly mounted on the top of the support base, and a programmable PLC is fixedly mounted on the top of the positioning baffle. A connecting rod is fixedly mounted on one side of the support base, and a limiting roller is mounted on one side of the connecting rod. The connecting rod and the limiting roller are connected by a bearing. A winding mechanism and a conveying mechanism are provided on one side of the support base. The winding mechanism includes a first motor, which is fixedly mounted on the positioning baffle. On one side, a drive shaft is fixedly connected to the output end of the first motor. A reel is provided on one side of the drive shaft. The drive shaft passes through a positioning baffle and is connected to the reel via a bearing. The drive shaft is also connected to the positioning baffle via a bearing. The conveying mechanism includes a second motor. A drive shaft is fixedly connected to the output end of the second motor. The drive shaft passes through a positioning baffle and is connected to the positioning baffle via a bearing. A tension sensor is provided on the outer side of the drive shaft. A connecting plate is provided on one side of the drive shaft. The drive shaft passes through the connecting plate and is connected to the connecting plate via a bearing. A guide roller is fixedly provided on one side of the drive shaft.

[0009] Existing technologies only output one reinforcing line. There are also products with two reinforcing lines in the existing technology, such as the door sealing strip disclosed in the patent application number CN202121853434.8. Utility Model Content

[0010] To solve the above problems, this patent can simultaneously pull two reinforcing wires, and has a compact structure. The technical solution is as follows:

[0011] This utility model embodiment provides a device for guiding and preheating the reinforcing wire of an EPDM rubber sealing strip. The device includes an unwinding structure and a preheating structure 9 arranged sequentially from front to back. The unwinding structure includes a wire roll 3, a front traction mechanism 4, and a conveying mechanism 5. The reinforcing wire 1 output from the wire roll 3 passes sequentially through the front traction mechanism 4 and the conveying mechanism 5. The device also includes a parallel traction structure 6 and a frame 2. The frame 2 is a vertical plate arranged along the front-back direction. There are two unwinding structures, which are mounted on the frame 2 and operate simultaneously or only one of them operates. Two conveying mechanisms 5 are arranged side-by-side vertically on the upper part of the frame 2. The two wire rolls... The two front traction mechanisms 3 are arranged side by side at the bottom of the frame 2 and can be fiberglass coils, copper coils, or tape coils. The two front traction mechanisms 4 are located directly above the two coils 3, arranged side by side at the bottom of the frame 2 and can be adjusted back and forth on the frame 2. The reinforcing wire 1 output from the front coil 3 is conveyed to the upper conveying mechanism 5 through the corresponding front traction mechanism 4, and the reinforcing wire 1 output from the rear coil 3 is conveyed to the lower conveying mechanism 5 through the corresponding front traction mechanism 4. The side-by-side traction structure 6 is located between the unwinding structure and the preheating structure 9, directly behind the two conveying mechanisms 5, and is used to pull the two reinforcing wires 1 side by side backward.

[0012] In this embodiment of the present invention, the conveying mechanism 5 includes N drive wheels 51, N slide blocks 52, N slide rails 53, and N tension wheels 54, where N is an integer from 2 to 4. The N drive wheels 51 are arranged side by side and driven synchronously. The N tension wheels 54 are arranged side by side and are respectively mounted on the N slide blocks 52. The N drive wheels 51 and the N tension wheels 54 are arranged alternately vertically. The reinforcing line 1 passes around the N drive wheels 51 and the N tension wheels 54 in an S-shape. The slide rails 53 are vertically mounted on the frame 2 and have limiting members 55 at both ends. When the tension of the reinforcing line 1 increases, the tension wheels 54 move upward.

[0013] Specifically, in this embodiment of the present invention, N is 3, and the drive wheel 51 is located in front of and above the corresponding tension wheel 54.

[0014] Preferably, in this embodiment of the present invention, the N slide rails 53 of the two conveying mechanisms 5 are arranged in a one-to-one correspondence and are connected vertically to form N long slide rails. The upper, middle and lower parts of the long slide rails are provided with limiting members 55; the slide seats 52 of the two conveying mechanisms 5 are respectively slidably disposed on the upper and lower parts of the corresponding long slide rails.

[0015] In this embodiment of the present invention, the front traction mechanism 4 includes a front fixed rod, a fixed column, a lower traction wheel coaxially arranged on the front fixed rod, and two inclined guide rollers arranged side by side on the lower side of the fixed column. The front fixed rod and the fixed column are both arranged in the left-right direction. The lower part of the frame 2 is provided with a sliding groove 21 in the left-right direction. The two front fixed rods are arranged in the sliding groove 21 in a way that can be adjusted left and right, and the two fixed columns are arranged in the sliding groove 21 in a way that can be adjusted in angle and left and right. The two inclined guide rollers are respectively located on the left and right sides of the reinforcing line 1, which are located in front of and above the corresponding wire roll 3. They are arranged obliquely upward from front to back, and their upper ends are arranged on the fixed column. The lower traction wheel is located above the corresponding inclined guide roller. The lower traction wheel of the rear front traction mechanism 4 is located behind and below the lower conveying mechanism 5, and the lower traction wheel of the front front traction mechanism 4 is located in front and below the upper conveying mechanism 5.

[0016] In this embodiment of the present invention, the preheating structure 9 includes a heating chamber 91, a guide groove 92 arranged in the front-to-back direction inside the heating chamber 91, a hot air blower 93 arranged diagonally downward from front to back on the top of the heating chamber 91, and a rear traction mechanism 94 at the rear end of the heating chamber 91. The air outlet of the hot air blower 93 is located directly above the guide groove 92. Both the front and rear ends of the heating chamber 91 are provided with through holes 95 for the reinforcing wires 1 to pass through. The two reinforcing wires 1 are placed side by side in the guide groove 92. The rear traction mechanism 94 includes a support roller arranged in the left-to-right direction and two vertical limiting rollers arranged side by side. The support roller is located below the two reinforcing wires 1. The two vertical limiting rollers are both arranged vertically and are located on the left and right sides of the two reinforcing wires 1.

[0017] Specifically, in this embodiment of the present invention, the heating chamber 91 is a rectangular chamber with a hinged flip door 96 on its left or right side, the guide groove 92 is a rectangular groove, and the through hole 95 is a rectangular hole that cooperates with the guide groove 92.

[0018] Furthermore, the device in this embodiment of the present invention also includes an adhesive coating structure 7, which includes an adhesive tank 71 arranged in the front-rear direction, a storage tank 72 above the adhesive tank 71, a support platform 73 at the front of the adhesive tank 71, a soft sponge on the support platform 73, and a dropper 74 directly above the sponge. The adhesive tank 71 has notches on both the front and rear sides for the reinforcing lines 1 to pass through. The dropper 74 is connected to the storage tank 72 through a pipe with a valve and is located directly above the two reinforcing lines 1. The reinforcing lines 1 pass over the upper side of the soft sponge soaked in adhesive.

[0019] Furthermore, in this embodiment of the present invention, a support 8 is provided between the adhesive coating structure 7 and the preheating structure 9, the hot air blower 93 is fixed at the rear of the support 8, the storage tank 72 is fixed at the front of the support 8, and the dropper 74 is fixed to the support 8 by a rigid steel wire.

[0020] In this embodiment of the present invention, the parallel traction structure 6 includes a fixed plate arranged in the front-to-back direction and two traction units arranged in parallel in the front-to-back direction on it. The front end of the fixed plate is fixed to the frame 2. The traction unit includes a rear fixed rod arranged in the left-to-right direction and two rear traction wheels arranged in parallel in the left-to-right direction on it. The two rear traction wheels are rotatably mounted on the rear fixed rod. Two reinforcing lines 1 pass over the two rear traction wheels respectively. The upper reinforcing line 1 passes over the lower side of one rear traction wheel in the front and the upper side of one rear traction wheel in the rear in sequence. The lower reinforcing line 1 passes over the upper side of the other rear traction wheel in the front and the upper side of the other rear traction wheel in the rear in sequence.

[0021] The beneficial effects of the technical solution provided by this utility model embodiment are: this device can simultaneously pull two reinforcing wires and automatically adjust the tension of both reinforcing wires, and has a compact structure. In addition, adhesive can be applied to the reinforcing wires, and the adhesive can be cured while the reinforcing wires are preheated, ensuring the bonding between the reinforcing wires and EPDM rubber. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the reinforcing wire opening and preheating device of the EPDM rubber sealing strip in the embodiment of this utility model;

[0023] Figure 2 yes Figure 1 A schematic diagram of the structure when one reinforcing wire is tensioned;

[0024] Figure 3 yes Figure 1 Enlarged view of the unwinding structure and the parallel traction structure;

[0025] Figure 4 yes Figure 1 Enlarged view of the intermediate coating structure and the preheating structure;

[0026] Figure 5 This is a partial structural diagram of the adhesive coating structure;

[0027] Figure 6 This is a partial structural diagram of the preheating structure;

[0028] Figure 7 yes Figure 6 A schematic diagram of the structure after the flip door is opened.

[0029] In the diagram: 1. Reinforcing line, 2. Frame, 3. Wire reel, 4. Front traction mechanism, 5. Conveying mechanism, 6. Parallel traction structure, 7. Glue coating structure, 8. Support frame, 9. Preheating structure;

[0030] 21. Slide groove;

[0031] 51 Drive wheel, 52 Slide block, 53 Slide rail, 54 Tension wheel, 55 Limiting component;

[0032] 71 Glue tank, 72 Storage tank, 73 Support platform, 74 Dropper;

[0033] 91 Heating chamber, 92 Guide groove, 93 Hot air blower, 94 Rear traction mechanism, 95 Through hole, 96 Tilting door. Detailed Implementation

[0034] To make the objectives, technical solutions and advantages of this utility model clearer, the utility model will be described in further detail below with reference to the accompanying drawings.

[0035] Example 1

[0036] See Figure 1-7 Example 1 provides a device for guiding and preheating the reinforcing wire of an EPDM rubber sealing strip. The device includes a frame 2, a parallel traction structure 6, a preheating structure 9, and two unwinding structures. The frame 2 is a vertical plate arranged in the front-to-back direction. The two unwinding structures are located on the frame 2 and can work simultaneously or only one of them can work. The frame 2, the parallel traction structure 6, and the preheating structure 9 are arranged sequentially from front to back.

[0037] The unwinding structure includes a wire roll 3, a front traction mechanism 4, and a conveying mechanism 5. The reinforcing wire 1 output from the wire roll 3 passes sequentially through the front traction mechanism 4 and the conveying mechanism 5. The two conveying mechanisms 5 are arranged side-by-side vertically on the upper part of the frame 2; the two wire rolls 3 are arranged side-by-side front-to-back on the lower part of the frame 2, and can be fiberglass wire rolls, copper wire rolls, or tape rolls, etc. The two front traction mechanisms 4 are located directly above the two wire rolls 3, arranged side-by-side front-to-back in the middle of the frame 2, and can be adjusted back and forth on the frame 2. The reinforcing wire 1 output from the front wire roll 3 passes through the corresponding front traction mechanism 4 to the upper conveying mechanism 5, and the reinforcing wire 1 output from the rear wire roll 3 passes through the corresponding front traction mechanism 4 to the lower conveying mechanism 5.

[0038] Specifically, the front traction mechanism 4 includes a front fixed rod, a fixed column, a lower traction wheel, and two inclined guide rollers. Both the front fixed rod and the fixed column are arranged in the left-right direction. The front fixed rod is a round rod, and the fixed column is a profile. A sliding groove 21 is provided at the lower part of the frame 2 in the left-right direction. The two front fixed rods (locked by corresponding locking structures) are adjustable left-right in the sliding groove 21, and the two fixed columns (locked by corresponding locking structures) are adjustable in angle and left-right in the sliding groove 21. The two inclined guide rollers are arranged side-by-side, below the fixed column, located on the left and right sides of the reinforcing line 1, respectively, and above the front of the corresponding wire roll 3. They are arranged obliquely upwards from front to back, with their upper ends mounted on the fixed column. The lower traction wheel is located above the corresponding inclined guide roller and is coaxially mounted on the front fixed rod. The lower traction wheel of the rear front traction mechanism 4 is located below and behind the lower conveying mechanism 5, and the lower traction wheel of the front front traction mechanism 4 is located below and in front of the upper conveying mechanism 5.

[0039] Specifically, the conveying mechanism 5 includes N drive wheels 51, N-1 slide blocks 52, N-1 slide rails 53, and N-1 tension wheels 54, where N is an integer from 2 to 4. The N drive wheels 51 are arranged side-by-side and driven synchronously (via chains or gears, etc.). The N-1 tension wheels 54 are arranged side-by-side and each is mounted on one of the N-1 slide blocks 52. The N drive wheels 51 and N-1 tension wheels 54 are staggered vertically. The diameter of the drive wheels 51 is larger than that of the tension wheels 54. The reinforcing line 1 passes around the N drive wheels 51 and N-1 tension wheels 54 in an S-shape. The slide rails 53 are vertically mounted on the frame 2 and have limiting members 55 at both ends (to block and limit the slide blocks 52). The reinforcing line 1 enters from the top of the front drive wheel 51 and exits from the top of the rear drive wheel 51. When the tension of the reinforcing line 1 increases, the tension wheels 54 move upward.

[0040] The parallel traction structure 6 is located between the unwinding structure and the preheating structure 9, directly behind the two conveying mechanisms 5. It is used to pull the two reinforcing wires 1 side by side backward. Specifically, the parallel traction structure 6 includes a fixed plate and two traction units. The fixed plate is arranged in the front-rear direction, and its front end is fixed to the frame 2. The two traction units are arranged side by side on the fixed plate. The traction unit includes a rear fixed rod arranged in the left-right direction and two rear traction wheels arranged side by side on it. The two rear traction wheels are rotatably mounted on the rear fixed rod, and the two reinforcing wires 1 pass over the two rear traction wheels respectively. The upper reinforcing wire 1 passes successively over the lower side of the rear traction wheel on one side (left or right) of the front and the upper side of the rear traction wheel on one side (left or right); the lower reinforcing wire 1 passes successively over the upper side of the rear traction wheel on the other side (right or left) of the front and the upper side of the rear traction wheel on the other side (right or left).

[0041] The preheating structure 9 includes a heating chamber 91, a guide groove 92, a hot air blower 93, a rear traction mechanism 94, and a tilting door 96. The heating chamber 91 is arranged in a front-to-back direction, with through holes 95 (specifically rectangular holes arranged in a left-to-right direction) at both its front and rear ends for the reinforcing wires 1 to pass through. The guide groove 92 is arranged in a front-to-back direction within the heating chamber 91, with its front and rear ends connecting to the front and rear sides of the heating chamber 91. It mates with the through holes 95 and is a rectangular groove. The hot air blower 93 is located at the top of the heating chamber 91, angled downwards from front to back, with its outlet directly above the guide groove 92. Two reinforcing wires 1 are placed side-by-side in the guide groove 92. The rear traction mechanism 94 is located at the rear end of the heating chamber 91 and includes a support roller arranged in a left-to-right direction and two vertical limiting rollers arranged side-by-side. The support roller is located below the two reinforcing wires 1 and is approximately flush with the rear traction wheel. Both vertical limiting rollers are vertically positioned on the left and right sides of the two reinforcing lines 1, and behind the support rollers. The flip door 96 is located on the left or right side of the heating chamber 91, and is hinged to the heating chamber 91, allowing it to be flipped up and opened.

[0042] In this embodiment, the drive wheel 51, tension wheel 54, lower traction wheel, and rear traction wheel are all arranged in the left-right direction.

[0043] Example 2

[0044] Example 2 provides a device for opening and preheating the reinforcing wire of an EPDM rubber sealing strip. Its structure is basically the same as that of Example 1, except that both wire rolls 3 in this embodiment are working and are both glass fiber wire rolls.

[0045] Example 3

[0046] Example 3 provides a device for opening and preheating the reinforcing wire of an EPDM rubber sealing strip. Its structure is basically the same as that of Example 1. The difference is that both wire coils 3 in this embodiment are working and are both copper wire coils.

[0047] Example 4

[0048] Example 4 provides a device for opening and preheating the reinforcing wire of an EPDM rubber sealing strip. Its structure is basically the same as that of Example 1. The difference is that only one wire roll 3 (specifically the rear wire roll 3) works in this embodiment of the present invention and it is a glass fiber wire roll.

[0049] Example 5

[0050] See Figure 1-2In Example 5, which is similar to Example 1, a device for guiding and preheating the reinforcing line of an EPDM rubber sealing strip is provided. Its structure is basically the same, except that the device in this example also includes an adhesive coating structure 7 and a support 8. The frame 2, the parallel traction structure 6, the adhesive coating structure 7, and the preheating structure 9 are arranged sequentially from front to back. The adhesive coating structure 7 includes an adhesive tank 71, a storage tank 72, a support platform 73, a soft sponge, and a dropper 74. The adhesive tank 71 is arranged along the front-to-back direction, with notches on both its front and back sides for the reinforcing line 1 to pass through; specifically, it is a rectangular groove. The support 8 is located on the left or right side between the adhesive coating structure 7 and the preheating structure 9, and a hot air blower 93 is fixed to the rear of the support 8. The storage tank 72 is located above the adhesive tank 71 and is fixed to the front of the support 8; it is a vertically arranged sealed bottle. The support platform 73 is located at the front of the adhesive tank 71. The soft sponge is placed on the support platform 73 and is soaked in adhesive. The dropper 74 is located directly above the sponge body and is connected to the storage tank 72 via a pipe (hose) with a valve. It is positioned directly above the two reinforcing wires 1 and is fixed to the bracket 8 by a rigid steel wire (for easy adjustment). The reinforcing wires 1 pass over the upper side of the soft sponge body soaked in adhesive.

[0051] Example 6

[0052] See Figure 1-3 Example 6 provides a device for opening and preheating the reinforcing line of an EPDM rubber sealing strip. Its structure is basically the same as that of Example 1, except that N in this example is 3.

[0053] Example 7

[0054] See Figure 1-3 Example 7 provides a device for guiding and preheating the reinforcing line of an EPDM rubber sealing strip. Its structure is basically the same as that of Example 6, except that: in this example, the N-1 slide rails 53 of the two conveying mechanisms 5 are arranged in a one-to-one correspondence and connected vertically to form N-1 long slide rails (a total of 2). Limiting members 55 are provided at the upper, middle, and lower parts of the long slide rails. The slide blocks 52 of the two conveying mechanisms 5 are slidably disposed on the upper and lower parts of the corresponding long slide rails, respectively.

[0055] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for guiding and preheating the reinforcing wires of EPDM rubber sealing strips, comprising, from front to back, a winding structure and a preheating structure (9), the winding structure comprising a wire reel (3), a front traction mechanism (4) and a conveying mechanism (5), the reinforcing wire (1) output by the wire reel (3) passing through the front traction mechanism (4) and the conveying mechanism (5) in sequence; characterized in that, the device further comprises side-by-side traction mechanisms (6) and a rack (2), the rack (2) being a vertical plate arranged along the front-to-back direction, the number of winding structures being two, both of which are arranged on the rack (2) and work simultaneously or only one of them works, the two conveying mechanisms (5) being arranged side by side above and below and being arranged on the upper part of the rack (2), the two wire reels (3) being arranged side by side in front of and behind each other and being arranged on the lower part of the rack (2), both of which are glass fiber wire reels, copper wire reels or adhesive tape reels, the two front traction mechanisms (4) being arranged side by side in front of and behind each other above the two wire reels (3) and being arranged on the middle part of the rack (2) and being adjustable in front of and behind each other on the rack (2), the reinforcing wire (1) output by the front wire reel (3) passing through the corresponding front traction mechanism (4) to the upper conveying mechanism (5), and the reinforcing wire (1) output by the rear wire reel (3) passing through the corresponding front traction mechanism (4) to the lower conveying mechanism (5); the side-by-side traction mechanisms (6) are arranged between the winding structure and the preheating structure (9) and are located directly behind the two conveying mechanisms (5), and are used to pull the two reinforcing wires (1) side by side to the rear.

2. The device for guiding and preheating the reinforcing threads of EPDM rubber sealing strips according to claim 1, characterized in that, the conveying mechanism (5) comprises N driving wheels (51), N sliding seats (52), N sliding rails (53) and N tension wheels (54), N being an integer from 2 to 4, the N driving wheels (51) being arranged side by side in front of and behind each other and being driven synchronously, the N tension wheels (54) being arranged side by side in front of and behind each other and being arranged on the N sliding seats (52) respectively, the N driving wheels (51) and the N tension wheels (54) being arranged alternately above and below each other, the reinforcing wire (1) passing through the N driving wheels (51) and the N tension wheels (54) in an S shape in sequence, the sliding rail (53) being arranged vertically on the rack (2) and being provided with limiters (55) at both the upper and lower ends thereof, and the tension wheel (54) moving upward when the tension of the reinforcing wire (1) increases.

3. The device for guiding and preheating the reinforcing threads of EPDM rubber sealing strips according to claim 2, characterized in that, N is 3, and the driving wheel (51) is located above the corresponding tension wheel (54).

4. The device for guiding and preheating the reinforcing cords of EPDM rubber sealing strips according to claim 2, characterized in that, The N sliding rails (53) of the two conveying mechanisms (5) are arranged one by one and connected above and below to form N long sliding rails, the upper end, the middle part and the lower part of the long sliding rail being provided with limiters (55), and the sliding seats (52) of the two conveying mechanisms (5) being slidingly arranged on the upper part and the lower part of the corresponding long sliding rail respectively.

5. The device for guiding and preheating the reinforcing cords of EPDM rubber sealing strips according to claim 1, characterized in that, The front traction mechanism (4) comprises a front fixed rod, a fixed column, a lower traction wheel coaxially arranged on the front fixed rod, and two oblique guide rollers arranged side by side on the lower side of the fixed column. The front fixed rod and the fixed column are arranged along the left-right direction. The lower part of the rack (2) is provided with a sliding groove (21) along the left-right direction. The two front fixed rods are adjustably arranged in the sliding groove (21). The two fixed columns are adjustably arranged in the sliding groove (21) in terms of angle and left-right direction. The two oblique guide rollers are respectively arranged on the left and right sides of the reinforcing wire (1), above the corresponding wire coil (3), and obliquely upward from front to back. The upper end is arranged on the fixed column. The lower traction wheel is located above the corresponding oblique guide roller. The lower traction wheel of the rear front traction mechanism (4) is located below the rear of the lower conveying mechanism (5). The lower traction wheel of the front front traction mechanism (4) is located below the front of the upper conveying mechanism (5).

6. The device for guiding and preheating the reinforcing cords of EPDM rubber sealing strips according to claim 1, characterized in that, The preheating structure (9) comprises a heating bin (91), a guide groove (92) arranged in the heating bin (91) along the front-rear direction, a hot air blower (93) arranged obliquely downward from front to back on the top of the heating bin (91), and a rear traction mechanism (94) at the rear end of the heating bin (91). The air outlet of the hot air blower (93) is located directly above the guide groove (92). The heating bin (91) is provided with through holes (95) for the reinforcing wire (1) to pass through at the front and rear ends. The two reinforcing wires (1) are arranged side by side in the guide groove (92). The rear traction mechanism (94) comprises a support roller arranged along the left-right direction and two vertical limiting rollers arranged side by side. The support roller is located below the two reinforcing wires (1). The two vertical limiting rollers are vertically arranged and located on the left and right sides of the two reinforcing wires (1).

7. The device for guiding and preheating the reinforcing cords of EPDM rubber sealing strips according to claim 6, characterized in that The heating bin (91) is a rectangular bin, and a turnover door (96) is hinged on the left side or the right side. The guide groove (92) is a rectangular groove. The through hole (95) is a rectangular hole matched with the guide groove (92).

8. The device for guiding and preheating the reinforcing threads of EPDM rubber sealing strips according to claim 6, characterized in that, The device also comprises a gluing structure (7) comprising a glue groove (71) arranged along the front-rear direction, a storage tank (72) above the glue groove (71), a support platform (73) in the front part of the glue groove (71), a soft sponge body on the support platform (73), and a dropper (74) directly above the sponge body. The glue groove (71) is provided with notches for the reinforcing wire (1) to pass through at the front and rear sides. The dropper (74) is connected with the storage tank (72) through a pipeline with a valve and is located directly above the two reinforcing wires (1). The reinforcing wire (1) passes through the upper side of the soft sponge body soaked with glue.

9. The device for guiding and preheating the reinforcing threads of EPDM rubber sealing strips according to claim 8, characterized in that, A support (8) is arranged between the gluing structure (7) and the preheating structure (9). The hot air blower (93) is fixed on the rear part of the support (8). The storage tank (72) is fixed on the front part of the support (8). The dropper (74) is fixed on the support (8) through a hard steel wire.

10. The device for guiding and preheating the reinforcing cords of EPDM rubber sealing strips according to claim 1, characterized in that, The side-by-side traction structure (6) comprises a fixed plate arranged in the front-rear direction and two traction units arranged side by side in the front-rear direction on the fixed plate, the front end of the fixed plate is fixed on the rack (2), the traction unit comprises a rear fixed rod arranged in the left-right direction and two rear traction wheels arranged side by side in the left-right direction on the rear fixed rod, the two rear traction wheels are rotatably arranged on the rear fixed rod, and two reinforcing wires (1) pass through the two rear traction wheels respectively; the upper reinforcing wire (1) passes through the lower side of the rear traction wheel on one side of the front part and the upper side of the rear traction wheel on one side of the rear part in sequence; and the lower reinforcing wire (1) passes through the upper side of the rear traction wheel on the other side of the front part and the upper side of the rear traction wheel on the other side of the rear part in sequence.

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