Belt welding machine

Abstract

The present invention provides a belt welding machine, comprising left and right end clamping devices, a hot melt device, left and right feeding groups and a belt docking moving device; the left and right belt end clamping devices comprise a left clamping unit and a right clamping unit that are arranged symmetrically on the left and right; the hot melt device comprises a heating head and a pushing mechanism, the heating head is connected to the pushing mechanism and can be located between the left clamping unit and the right clamping unit under the push of the pushing mechanism; the left and right feeding groups and the belt docking device can move the left clamping unit and the right clamping unit toward each other to complete the welding. The present invention can automatically weld polyurethane belts or hot melt belts, realize semi-automatic operation, and effectively ensure the stability of the quality of the welding point.

Description

Technical Field

[0001] The invention relates to a belt welding machine. Background Art

[0002] Figure 1 This is a round belt for a fitness bike, used to achieve transmission between mechanisms, and its main material is polyurethane. Since the round belt needs to be connected end to end into a ring before it can be used, the current connection method is: manually heat-melt the two ends of a section of polyurethane round belt through an alcohol lamp or an electric heating rod, and then squeeze the two ends of the polyurethane round belt together by hand pressure until it cools naturally to complete the bonding. This method is all manual operation and extrusion, relying on human experience and judgment, which will lead to uncertain melting point and unstable adhesion of the weld, resulting in the stability of the quality of the weld point cannot be guaranteed. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a belt welding machine which can automatically weld polyurethane belts or other heat-meltable belts, realize mechanized operation, and effectively ensure the stability of the quality of the welding points.

[0004] The present invention is implemented as follows: a belt welding machine, comprising left and right end clamping devices, a hot-melting device, left and right feeding groups and a belt docking moving device;

[0005] The left and right belt end clamping devices include a left clamping unit and a right clamping unit that are symmetrically arranged on the left and right sides;

[0006] The hot melt device comprises a heating head and a pushing mechanism, wherein the heating head is connected to the pushing mechanism and can be located between the left holding unit and the right holding unit under the push of the pushing mechanism;

[0007] The left and right feeding groups include a left feeding unit, a right feeding unit and a feeding driving unit. The left feeding unit and the right feeding unit are driven by the feeding driving unit to move toward each other or move away from each other in the opposite directions. The left feeding unit is connected to the left holding unit, and the right feeding unit is connected to the right holding unit.

[0008] The belt docking device includes a left docking unit, a right docking unit and a docking drive unit. The left docking unit and the right docking unit move toward each other or away from each other under the drive of the docking drive unit, and the left docking unit is connected to the left holding unit, and the right docking unit is connected to the right holding unit.

[0009] Further, according to a specific embodiment of the present invention, the left holding unit comprises a left card slot, a left card slot plate and a left rotating pressure plate, the left card slot is provided on the left card slot plate, the left rotating pressure plate is provided on the left card slot plate, and can rotate and press on the left card slot;

[0010] The right holding unit comprises a right card slot, a right card slot plate and a right rotating pressure plate. The right card slot is provided on the right card slot plate. The right rotating pressure plate is provided on the right card slot plate and can be rotated and pressed onto the left card slot.

[0011] Further, according to a specific embodiment of the present invention, the feed drive unit includes a servo motor and a T-screw, wherein the T-screw is connected to a drive shaft of the servo motor and has a left thread segment and a right thread segment in opposite directions;

[0012] The left feeding unit comprises a left T-nut, a left connecting plate and a left linear guide assembly, wherein the T-nut is screwed on the left threaded section of the T-screw, the left connecting plate is fixedly connected to the T-screw and the left linear guide assembly respectively, and the left holding unit is connected to the left linear guide assembly so as to be linearly movable leftward and rightward;

[0013] The right feed unit includes a right T-nut, a right connecting plate and a right linear guide rail assembly, the T-nut is screwed on the right threaded section of the T-screw, the right connecting plate is fixedly connected to the T-screw and the right linear guide rail assembly respectively, and the right clamping unit is connected to the right linear guide rail assembly so as to be linearly movable left and right.

[0014] Further, according to a specific embodiment of the present invention, the left docking unit comprises a left shifting block and a left clamping block, the left shifting block is connected to the left clamping unit, and the left clamping block is fixedly connected to the docking drive unit;

[0015] The right docking unit comprises a right shifting block and a right clamping block, the right shifting block is connected to the right clamping unit, and the right clamping block is fixedly connected to the docking drive unit;

[0016] The left clamping block and the right clamping block move toward each other under the drive of the docking drive unit.

[0017] Furthermore, according to a specific embodiment of the present invention, it also includes a left elastic limiting device and a right elastic limiting device, the left elastic limiting device includes a left supporting seat, a left T-shaped clamping rod and a left spring, the left clamping rod includes a left thin end and a left T-shaped head, the left clamping rod is mounted on the left supporting seat, and the left thin end is pressed inwardly against the left clamping unit, the left spring is sleeved on the left clamping rod and both ends are pressed between the left supporting seat and the left T-shaped head; the right elastic limiting device includes a right supporting seat, a right T-shaped clamping rod and a right spring, the right clamping rod includes a right thin end and a right T-shaped head, the right clamping rod is mounted on the right supporting seat, and the right thin end is pressed inwardly against the right clamping unit, and the right spring is sleeved on the right clamping rod and both ends are pressed between the right supporting seat and the right T-shaped head.

[0018] Furthermore, according to a specific embodiment of the present invention, it also includes a welding point shaping device, which includes a shaping clamp, an opening and closing drive unit and a translation drive unit connected in sequence. The shaping clamp can be translated between the left holding unit and the right holding unit under the drive of the translation drive unit, and open and close forward and backward under the drive of the opening and closing drive unit.

[0019] Further, according to a specific embodiment of the present invention, the opening and closing drive unit is a finger cylinder; and the translation drive unit is a slide cylinder.

[0020] Furthermore, according to a specific embodiment of the present invention, it also includes a sliding limiting mechanism, which includes a resisting block and a sliding driving unit connected to each other, and the resisting block moves between the left holding unit and the right holding unit under the drive of the sliding driving unit.

[0021] Further, according to a specific embodiment of the present invention, the sliding drive unit is a slide cylinder.

[0022] The advantages of the present invention are as follows: the belt welding machine of the present invention comprises left and right end clamping devices, a hot-melt device, left and right feeding groups and a belt docking moving device, and the two ends of the belt can be manually clamped by the left and right end clamping devices, the two ends of the belt can be hot-melted by the hot-melt device, and the two ends of the hot-melted belt can be docked in two parts by the left and right feeding groups and the belt docking moving device to complete automatic welding. The present invention can automatically weld polyurethane belts or other hot-melt belts, realize semi-automatic operation, and effectively ensure the stability of the quality of the welding point. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below in conjunction with embodiments with reference to the accompanying drawings.

[0024] Figure 1 It is a schematic diagram of the structure of a round belt for an exercise bike before and after welding.

[0025] Figure 2 It is a structural schematic diagram of the sliding limit mechanism of the present invention when it moves into place.

[0026] Figure 3 It is a schematic structural diagram of the hot melt device of the present invention when it is in place.

[0027] Figure 3-1 yes Figure 3 A partial enlarged view of .

[0028] Figure 4 It is a schematic structural diagram of the state after the left and right feeding groups of the present invention are actuated and before the belt docking moving device is actuated.

[0029] Figure 4-1 yes Figure 4 A partial enlarged view of .

[0030] Figure 5 It is a schematic structural diagram of the welding point shaping device of the present invention when it is moved into position.

[0031] Figure 6 It is a schematic diagram of the axial cross-sectional structure of the left and right feed groups of the present invention.

[0032] Figure 7 It is a schematic diagram of the overall structure of the belt welding machine of the present invention. DETAILED DESCRIPTION

[0033] See also Figures 2 to 7 As shown, the belt welding machine 100 of the present invention includes left and right end clamping devices 1, hot melting devices 2, left and right feeding groups 3 and belt docking moving devices 4; it may also include left elastic limiting devices 5, right elastic limiting devices 6, welding point shaping devices 7 and sliding limiting mechanisms 8. Among them,

[0034] The left and right belt end clamping device 1 includes a left clamping unit 11 and a right clamping unit 12 which are symmetrically arranged on the left and right; the left clamping unit 11 includes a left clamping slot 111, a left clamping slot plate 112 and a left rotating pressure plate 113; the left clamping slot 111 is provided on the left clamping slot plate 112 for accommodating one end 201 of the belt 200; the left rotating pressure plate 113 is provided on the left clamping slot plate 112 and can rotate and press one end 201 of the belt onto the left clamping slot 111; the right clamping unit 12 includes a right clamping slot 121, a right clamping slot plate 122 and a right rotating pressure plate 123; the right clamping slot 121 is provided on the right clamping slot plate 122 for accommodating the other end 202 of the belt 200; the right rotating pressure plate 123 is provided on the right clamping slot plate 122 and can rotate and press the other end 202 of the belt 200 onto the left clamping slot 121.

[0035] The hot melt device 2 includes a heating head 21 and a pushing mechanism 22. The heating head 21 is connected to the pushing mechanism 22 and can be located between the left holding unit 11 and the right holding unit 12 under the push of the pushing mechanism 22; the two ends 201 and 202 of the belt 200 exposed from the left holding unit 11 and the right holding unit 12 are heated to melt them, and the heating head 21 can be withdrawn under the push of the pushing mechanism 22.

[0036] The left and right feeding groups 3 include a left feeding unit 31, a right feeding unit 32 and a feeding driving unit 33; the left feeding unit 31 and the right feeding unit 32 are driven by the feeding driving unit 33 to approach each other or move away from each other, and the left feeding unit 31 is connected to the left holding unit 11, and the right feeding unit 32 is connected to the right holding unit 12; thereby driving the two ends 201 and 202 of the belt 200 to approach each other for welding, and can be reset after welding is completed to prepare for the next welding.

[0037] The feed drive unit 33 includes a servo motor 331 and a T-screw 332, wherein the T-screw 331 is connected to the drive shaft of the servo motor 331 and has a left thread segment and a right thread segment in opposite directions;

[0038] The left feeding unit 31 includes a left T-nut 311, a left connecting plate 312 and a left linear guide assembly 313, wherein the left T-nut 311 is screwed on the left threaded section of the T-screw 332, the left connecting plate 312 is respectively fixedly connected to the T-screw 332 and the left linear guide assembly 313, and the left holding unit 11 is connected to the left linear guide assembly 313 so as to be linearly movable left and right; thus, when the left feeding unit 31 moves the left holding unit 11 to the right to a predetermined position (approximately 1 mm away from the melting point), the left holding unit 11 can also continue to move right to the melting point relative to the left linear guide assembly 313 driven by the belt docking device 4.

[0039] The right feeding unit 32 includes a right T-nut 321, a right connecting plate 322 and a right linear guide assembly 323. The right T-nut 321 is screwed on the right threaded section of the T-screw 332. The right connecting plate 322 is respectively fixedly connected to the T-screw 332 and the right linear guide assembly 323, and the right holding unit 12 is connected to the right linear guide assembly 323 so as to be linearly movable left and right. Similarly, when the right feeding unit 32 moves the right holding unit 12 to the left to a predetermined position (about 1 mm away from the melting point), the right holding unit 12 can also continue to move left to the welding point relative to the right linear guide assembly 323 under the drive of the belt docking device 4.

[0040] Mainly as Figure 4 and Figure 4-1As shown, the belt docking device 4 includes a left docking unit 41, a right docking unit 42 and a docking drive unit 43. The left docking unit 41 and the right docking unit 42 move toward each other or away from each other under the drive of the docking drive unit 43, and the left docking unit 41 is connected to the left clamping unit 11, and the right docking unit 42 is connected to the right clamping unit 12. The left docking unit 41 includes a left shifting block 411 and a left clamping block 412. The left shifting block 411 is connected to the left clamping slot plate 112 of the left clamping unit 11, and the left clamping block 412 is fixedly connected to the docking drive unit 43; the right docking unit 42 includes a right shifting block 421 and a right clamping block 422. The right shifting block 421 is connected to the right clamping slot plate 122 of the right clamping unit 12, and the right clamping block 422 is fixedly connected to the docking drive unit 43; the left clamping block 412 and the right clamping block 422 move toward each other under the drive of the docking drive unit 43, thereby driving the left shifting block 411 The left shift block 411 and the right shift block 421 move toward each other, and the left holding unit 11 and the right holding unit 12 move toward each other. Specifically, the left card slot plate 112 in the left holding unit 11 moves rightward relative to the left linear guide assembly 313, and the right card slot plate 122 of the right holding unit 12 moves leftward relative to the right linear guide assembly 323, so that one end 201 and the other end 202 of the belt 200 are welded against each other at the welding point.

[0041] The left elastic limiting device 5 comprises a left supporting seat 51, a left T-shaped pressing rod 52 and a left spring 53. The left pressing rod 52 comprises a left thin end 521 and a left T-shaped head 522. The left pressing rod 52 is mounted on the left supporting seat 51, and the left thin end 521 presses inwardly against the left holding unit 11. The left spring 53 is sleeved on the left pressing rod 52 and its two ends are pressed between the left supporting seat 51 and the T-shaped head 522.

[0042] The right elastic limiting device 6 includes a right supporting seat 61, a left T-shaped clamping rod 62 and a right spring 63. The right T-shaped clamping rod 62 includes a right thin end 621 and a right T-shaped head 622. The right clamping rod 52 is mounted on the right supporting seat 51, and the right thin end 521 is pressed inwardly against the right clamping unit 12. The right spring 63 is sleeved on the right clamping rod 52 and its two ends are pressed between the right supporting seat 51 and the right T-shaped head 622.

[0043] The welding point shaping device 7 comprises a shaping clamp 71, an opening and closing driving unit 72 and a translation driving unit 73 connected in sequence. The shaping clamp 71 can be translated between the left holding unit 11 and the right holding unit 12 under the drive of the translation driving unit 73, and can be opened and closed forward and backward under the drive of the opening and closing driving unit 72. The opening and closing driving unit 72 is a finger cylinder; the translation driving unit 73 is a slide cylinder.

[0044] The sliding limit mechanism 8 comprises a resisting block 81 and a sliding drive unit 82 connected to each other, and the resisting block 81 is driven by the sliding drive unit 82 to move between the left holding unit 11 and the right holding unit 12. The sliding drive unit 82 is a slide cylinder.

[0045] The belt welding machine 100 of the present invention can also be installed on a frame 101 and equipped with a control cabinet 102 and left and right button boxes 103 , on which a start button 104 is provided.

[0046] Working process of the present invention:

[0047] 1. Mainly as Figure 2 As shown, both hands simultaneously press the start button 104 on the left and right button boxes 103, at which time the servo motor 331 of the feed drive unit 33 drives the T-screw 332 through the coupling to open the left and right feed groups 3, and the slide drive unit 82 of the slide limit mechanism 8 sends out the resistance block 81. At this time, the worker puts the round belt 200 into the slots 111 and 121 of the slot plates 112 and 122, and the two end heads 201 and 202 face each other and push against the resistance block 81, and then respectively rotate the left rotating pressure plate 113 and the right rotating pressure plate 123 to the right position to press the round belt 200.

[0048] 2. Mainly as Figure 3 As shown, the start button 104 is pressed with both hands again, and then the sliding drive unit 82 of the sliding limit mechanism 8 retracts the resistance block 81 to its original position. At this time, the pushing mechanism 22 of the hot melt device 2 pushes out the heating head 21, and the servo motor 331 drives the left feeding unit 31 and the right feeding unit 32 to feed in opposite directions through the T-screw 332 until the two ends 201 and 202 of the round belt 200 contact the heating head 21 and then stop, so that the round belt 200 is heated until it is melted. At this time, the servo motor 331 retreats slightly to make way, allowing the pushing mechanism 22 to return the heating head 21 to its original position.

[0049] 3. At this time, the servo motor 331 feeds rapidly until the two ends of the round belt 200 stop at a distance of one millimeter. At this time, the docking drive unit 43 (finger cylinder) of the belt docking device 4 drives the left docking unit 41 and the right docking unit 42 to move toward each other, thereby moving the left card slot plate 112 and the right card slot plate 122 to complete the remaining feeding for welding.

[0050] 4. After the welding is maintained for two seconds, the translation drive unit 73 of the welding point shaping device 7 pushes out the shaping clamp 71, and at the same time, the shaping clamp 71 is opened by the opening and closing drive unit 72 (finger cylinder), and the shaping clamp 71 is aligned with the welding point and closed. The shaping clamp 71 can shape the welding point. After one second, the opening and closing drive unit 72 is released, and the translation drive unit 73 retracts the shaping clamp 71. At the same time, the docking drive unit 43 is also released to complete the welding. At this time, the worker unscrews the left rotating plate 113 and the right rotating plate 123 to take out the welded round belt 200.

[0051] In summary, the belt welding machine of the present invention includes left and right end clamping devices, a hot melt device, left and right feeding groups and a belt docking moving device. The two ends of the belt can be manually clamped by the left and right end clamping devices, the two ends of the belt can be hot-melted by the hot melt device, and the two ends of the hot-melted belt can be docked in two parts by the left and right feeding groups and the belt docking moving device to complete automatic welding. The present invention can automatically weld polyurethane belts or other hot-melt belts, realize semi-automatic operation, and effectively ensure the stability of the quality of the welding point.

[0052] Although the specific implementation modes of the present invention are described above, those skilled in the art should understand that the specific implementation modes described are only illustrative and are not intended to limit the scope of the present invention. Equivalent modifications and changes made by those skilled in the art in accordance with the spirit of the present invention should be included in the scope of protection of the claims of the present invention.

[0053] The above embodiments and drawings do not limit the product form and style of the present invention. Any appropriate changes or modifications made by ordinary technicians in the relevant technical field should be deemed to be within the patent scope of the present invention.

Claims

1. A belt welding machine, characterized in that: It includes left and right end clamping devices, hot melting devices, left and right feeding groups and belt docking moving devices; The left and right end clamping devices include a left clamping unit and a right clamping unit that are arranged symmetrically on the left and right sides; The hot melt device comprises a heating head and a pushing mechanism, wherein the heating head is connected to the pushing mechanism and can be located between the left holding unit and the right holding unit under the push of the pushing mechanism; The left and right feeding groups include a left feeding unit, a right feeding unit and a feeding driving unit. The left feeding unit and the right feeding unit are driven by the feeding driving unit to move toward each other or move away from each other in the opposite directions. The left feeding unit is connected to the left holding unit, and the right feeding unit is connected to the right holding unit. The belt docking moving device comprises a left docking unit, a right docking unit and a docking driving unit. The left docking unit and the right docking unit are driven by the docking driving unit to move toward each other or move away from each other in the opposite direction, and the left docking unit is connected to the left holding unit, and the right docking unit is connected to the right holding unit. The feed drive unit comprises a servo motor and a T-screw, wherein the T-screw is connected to a drive shaft of the servo motor and has a left thread segment and a right thread segment in opposite directions; The left feeding unit comprises a left T-nut, a left connecting plate and a left linear guide assembly, wherein the left T-nut is screwed on the left threaded section of the T-screw, the left connecting plate is fixedly connected to the T-screw and the left linear guide assembly respectively, and the left holding unit is connected to the left linear guide assembly so as to be linearly movable leftward and rightward; The right feeding unit comprises a right T-nut, a right connecting plate and a right linear guide assembly, wherein the right T-nut is screwed on the right threaded section of the T-screw, the right connecting plate is fixedly connected to the T-screw and the right linear guide assembly respectively, and the right holding unit is connected to the right linear guide assembly so as to be linearly movable leftward and rightward; The left docking unit comprises a left shifting block and a left clamping block, the left shifting block is connected to the left clamping unit, and the left clamping block is fixedly connected to the docking drive unit; The right docking unit comprises a right shifting block and a right clamping block, the right shifting block is connected to the right clamping unit, and the right clamping block is fixedly connected to the docking drive unit; The left clamping block and the right clamping block move toward each other under the drive of the docking drive unit; The left elastic limiting device comprises a left supporting seat, a left T-shaped abutting rod and a left spring, wherein the left T-shaped abutting rod comprises a left thin end and a left T-shaped head, the left T-shaped abutting rod is mounted on the left supporting seat, and the left thin end is inwardly abutted against the left holding unit, and the left spring is sleeved on the left T-shaped abutting rod and its two ends are abutted between the left supporting seat and the left T-shaped head; The right elastic limiting device includes a right supporting seat, a right T-shaped clamping rod and a right spring. The right T-shaped clamping rod includes a right thin end and a right T-shaped head. The right T-shaped clamping rod is mounted on the right supporting seat, and the right thin end is pressed inwardly against the right clamping unit. The right spring is sleeved on the right T-shaped clamping rod and its two ends are pressed between the right supporting seat and the right T-shaped head.

2. The belt welding machine according to claim 1, characterized in that: The left holding unit comprises a left card slot, a left card slot plate and a left rotating pressure plate, the left card slot is provided on the left card slot plate, the left rotating pressure plate is provided on the left card slot plate and can rotate and press on the left card slot; The right holding unit comprises a right card slot, a right card slot plate and a right rotating pressure plate. The right card slot is provided on the right card slot plate. The right rotating pressure plate is provided on the right card slot plate and can be rotated and pressed onto the left card slot.

3. The belt welding machine according to claim 1, characterized in that: It also includes a welding point shaping device, which includes a shaping clamp, an opening and closing drive unit and a translation drive unit connected in sequence. The shaping clamp can be translated between the left holding unit and the right holding unit under the drive of the translation drive unit, and can be opened and closed forward and backward under the drive of the opening and closing drive unit.

4. The belt welding machine according to claim 3, characterized in that: The opening and closing driving unit is a finger cylinder; The translation drive unit is a slide cylinder.

5. The belt welding machine according to claim 1, characterized in that: It also includes a sliding limiting mechanism, which includes a resisting block and a sliding driving unit that are connected to each other. The resisting block moves between the left holding unit and the right holding unit under the drive of the sliding driving unit.

6. The belt welding machine according to claim 5, characterized in that: The sliding drive unit is a slide cylinder.

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