A glue spraying mechanism with single power to realize reciprocating motion in different paths

Abstract

The present invention relates to a glue spraying mechanism that can realize reciprocating motion in different paths with a single power, including a glue spraying unit and a lifting unit for driving the glue spraying unit to lift and lower. The lifting unit is slidably connected to the glue spraying unit through a transverse guide rail installed on a transverse guide rail mounting plate. The glue spraying mechanism also includes a follower unit, which includes a cam follower fixedly connected to the transverse guide rail mounting plate and a guide groove for guiding the cam follower to move counterclockwise. When the lifting unit moves, the follower unit moves counterclockwise along the guide groove, thereby realizing the reciprocating motion of the glue spraying unit in the horizontal direction. Compared with the prior art, the present invention has the advantages of shortening the time of telescopic action, improving work efficiency, high safety, low manufacturing cost and simple maintenance.

Description

Technical Field

[0001] The invention relates to the field of product glue spraying equipment, and in particular to a glue spraying mechanism that realizes reciprocating motion in different paths with a single power. Background Art

[0002] At present, in many automated assembly fields, the automatic glue spraying process of products generally cannot meet the audit requirements of IATF16949 in terms of glue spraying quality and work efficiency. The currently known horizontal glue spraying mechanism is installed vertically, and the glue spraying head is mainly installed horizontally. Its structure is mainly composed of two columns, a large installation plate, a vertically installed electric cylinder, a sliding cylinder that can be telescopic forward and backward, and a glue spraying solenoid valve in series. When the product is transported to the front end of the inspection solenoid valve through a turntable or other conveying medium, the glue discharge head needs to be extended forward so that the glue discharge nozzle is as close as possible to the surface of the product being sprayed, about 3-5mm, because the working principle of the glue spraying solenoid valve is a high-frequency pulse triggering glue point, which can reach 40-80 times per second. Therefore, if the glue head is too far away from the surface of the product being sprayed, the glue point sprayed by the glue spraying solenoid valve cannot fall on the surface of the product being sprayed, and the product glue spraying is unqualified. When the distance is too close, it will cause too much glue to hang on the glue head nozzle, resulting in subsequent poor glue spraying, so the glue spraying head needs to be extended to a suitable distance. working position, at this time, the electric cylinder drives the glue spraying solenoid valve downward from the original position (top), and the solenoid valve evenly sprays a set number of glue dots within this displacement through high-frequency pulses to complete a glue spraying action. After completing a glue spraying, the turntable rotates to transport the new product to be sprayed to the front section of the glue spraying head. The glue spraying head needs to be retracted. If the glue spraying head is not retracted in time when the turntable rotates, there will be a safety hazard of the nozzle at the front end of the glue head being hit. Therefore, the glue spraying head needs to be retracted. In this way, the glue spraying head needs to be extended and retracted each time a glue spraying action is performed, resulting in too low production efficiency, which is not conducive to mass production. Summary of the invention

[0003] The purpose of the present invention is to overcome the defects of the above-mentioned prior art and provide a glue spraying mechanism that can realize reciprocating motion in different paths with a single power, shorten the time of telescopic action, improve work efficiency, high safety, low manufacturing cost and simple maintenance.

[0004] The purpose of the present invention can be achieved by the following technical solutions:

[0005] A glue spraying mechanism that can realize reciprocating motion in different paths with a single power comprises a glue spraying unit and a lifting unit for driving the glue spraying unit to rise and fall, wherein the lifting unit is slidably connected to the glue spraying unit via a transverse guide rail installed on a transverse guide rail mounting plate, and the glue spraying mechanism also comprises a follower unit, which comprises a cam follower fixedly connected to the transverse guide rail mounting plate and a guide groove for guiding the cam follower to move counterclockwise; when the lifting unit moves, the follower unit moves counterclockwise along the guide groove, thereby realizing reciprocating motion of the glue spraying unit in the horizontal direction.

[0006] Preferably, the guide groove comprises a first guide groove and a second guide groove respectively used to guide the cam follower to move downward and upward; a guide block is provided between the first guide groove and the second guide groove, and guide arc surfaces are provided at both ends of the guide block for guiding the cam follower to switch the guide groove.

[0007] More preferably, two safety grooves are provided at both ends of the guide groove to prevent the cam follower from escaping from the guide groove.

[0008] More preferably, the guide groove is provided with a stopper at the point where it collides with the cam follower for reducing impact wear and noise.

[0009] More preferably, proximity sensors for detecting the position of the cam follower are provided in the first guide groove and the second guide groove.

[0010] Preferably, the lifting unit includes a base mounting plate, an electric cylinder mounting plate, an electric cylinder, a column and a column support; the column support is fixedly connected to the base mounting plate; the column is installed on the column support; the electric cylinder mounting plate is fixedly connected to the column; the electric cylinder is installed on the electric cylinder mounting plate; a slider is provided on the transverse guide rail, and the slider is fixedly connected to the slide of the electric cylinder.

[0011] Preferably, the glue spraying unit includes a rotating cylinder connecting plate, a rotating cylinder and an existing glue spraying structure; one end of the rotating cylinder connecting plate is fixedly connected to the transverse guide rail mounting plate, and the other end is connected to the rotating cylinder; the glue spraying structure is connected to the rotating table of the rotating cylinder.

[0012] Preferably, the follower unit also includes a first spring link, a follower unit connecting plate, a second spring link and a link support; the follower unit connecting plate is fixedly connected to the lifting unit; the guide groove is provided on the follower unit connecting plate; the first spring link and the second spring link are both fixed to the follower unit connecting plate through the link support; the roller of the cam follower is installed in the guide groove; one end of the first spring link and the second spring link can rotate around the axis of the cam follower; the first spring link and the second spring link are also movably connected to the link support.

[0013] More preferably, the first spring link and the second spring link are respectively connected to the link support through a floating rotating cam; the first spring link and the second spring link are provided with a link spring between the floating rotating cam and the axis of the cam follower; the floating rotating cam is installed on the link support through a mounting hole; the floating rotating cam can rotate around the central axis of the mounting hole; the floating rotating cam is provided with a through hole for the spring link to pass through; the first spring link and the second spring link are extended and retracted through the through hole.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] 1. Shorten the time of telescopic action and improve work efficiency: The glue spraying mechanism in the present invention completes the telescopic action in the horizontal direction while the glue spraying structure moves downward or upward, and reduces the extension and retraction action of a slide cylinder in the action steps. The current traditional glue spraying mechanism takes 3 seconds to complete a glue spraying, and the glue spraying mechanism in the present invention only takes 1.5 seconds to complete a glue spraying action. Therefore, compared with the traditional cylinder telescopic mechanism, its production cycle can be increased by 50% in time, thereby improving work efficiency.

[0016] 2. High safety: The glue spraying structure of the present invention is provided with a safety groove, which can cope with the situation that the stroke of the electric cylinder exceeds the length of the guide groove, thereby greatly improving the safety of the device.

[0017] 3. Low manufacturing cost: The glue spraying mechanism in the present invention replaces the traditional slide cylinder through two spring connecting rods, guide grooves and cam followers, which reduces the cost of purchasing components and manufacturing devices.

[0018] 4. Simple maintenance: All two parts of the glue spraying mechanism of the present invention that need to be adjusted are located in a prominent position above the device, making the maintenance of the device easier. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a front view of the glue spraying mechanism in the present invention;

[0020] Figure 2 It is a side view of the glue spraying mechanism in the present invention;

[0021] Figure 3 A top view of the glue spraying mechanism of the present invention;

[0022] Figure 4 It is an isometric view of the glue spraying mechanism in the present invention;

[0023] Figure 5 It is a side view of the follower unit in the present invention;

[0024] Figure 6 It is a schematic diagram of the structure of the follower unit in the present invention.

[0025] The numbers in the figure show:

[0026] 100. first spring connecting rod, 101. base mounting plate, 102. electric cylinder mounting plate, 103. rotary cylinder, 104. glue spraying structure, 105. connecting rod spring, 106. electric cylinder, 107. follower unit connecting plate, 108. transverse guide rail, 109. second spring connecting rod, 110. cam follower, 111. proximity sensor, 112. connecting rod support, 113. stopper, 114. transverse guide rail mounting plate, 115. column, 116. first guide groove, 117. second guide groove, 118. guide block. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0028] The present invention relates to a glue spraying mechanism that realizes reciprocating motion in different paths with a single power, such as Figures 1 to 4 As shown, it includes a glue spraying unit, a lifting unit and a follower unit.

[0029] The lifting unit includes a base mounting plate 101, two column supports fixed on the base mounting plate 101, two columns 115 installed on the column supports, an electric cylinder mounting plate 102 fixedly connected to the columns 115, an electric cylinder 106 installed on the electric cylinder mounting plate 102, a transverse guide rail mounting plate 114 and a transverse guide rail 108 installed on the transverse guide rail mounting plate 114, a slider is provided on the transverse guide rail 108, the slider is fixedly connected to the slide table of the electric cylinder 106, and the transverse guide rail 108 is slidably connected to the slider.

[0030] The glue spraying unit includes a rotary cylinder connecting plate, a rotary cylinder 103 and an existing glue spraying structure. One end of the rotary cylinder connecting plate is fixedly connected to the transverse guide rail mounting plate 114, and the other end is fixedly connected to the rotary cylinder. The glue spraying structure is fixedly connected to the rotating table of the rotary cylinder 103. The glue spraying structure in this embodiment is a standard part. It should be pointed out that a feeding unit not marked in the figure is provided in the glue spraying structure.

[0031] like Figure 5 and Figure 6As shown, the follower unit is provided with a follower unit connecting plate 107 fixedly connected to the electric cylinder mounting plate 102, and a guide groove is provided on the follower unit connecting plate 107, and the cam follower 110 can move counterclockwise along the guide groove. The guide groove includes a first guide groove 116 for guiding the cam follower 110 to move downward and a second guide groove 117 for guiding the cam follower to move upward. The first guide groove 116 is located near the glue spraying unit, and the second guide groove 117 is located away from the glue spraying unit. The distance between the first guide groove 116 and the second guide groove 117 is the telescopic distance of the glue spraying unit. A guide block 118 is provided between the first guide groove 116 and the second guide groove 117, and guide arc surfaces are provided at both ends of the guide block 118 for guiding the cam follower 110 to switch the guide groove.

[0032] The roller of the cam follower 110 is buckled in the guide groove, and its axis is fixedly connected to the transverse guide rail mounting plate 114. One end of the first spring link 100 and the second spring link 109 can rotate around the axis of the cam follower 110. The first spring link 100 and the second spring link 109 are connected to the link support 112 fixed on the follower unit connecting plate 107 through the floating rotating cam. The swing rod of the spring link passes through the through hole on the floating rotating cam, and the swing rod can be extended and retracted through the through hole. The floating rotating cam is movably connected to the link support 112 through the mounting hole, and the floating rotating cam can rotate around the central axis of the mounting hole.

[0033] Considering that the stroke of the electric cylinder 106 may exceed the length of the guide groove, the present embodiment provides safety grooves above and below the guide groove. When the stroke of the electric cylinder 106 exceeds the length of the guide groove, the cam follower 110 can move along the safety groove without damaging the device. By providing the safety groove, the safety of the device is greatly improved, and the stroke requirement of the electric cylinder is no longer so strict, thereby improving the applicability of the device.

[0034] Taking into account that the spring connecting rod will produce a device on the side wall of the guide groove when driving the cam follower 110 to switch the guide groove, this embodiment has blocks 113 for reducing impact loss and noise at the impact position and the upper left corner and lower right corner of the guide groove. The material of the block 113 can be a material with greater elasticity such as polyurethane, rubber or latex.

[0035] Proximity sensors 111 are provided in both the first guide groove 116 and the second guide groove 117 , and the two sensors can be used to determine whether the glue spraying structure is in the extended position or the retracted position.

[0036] The operation process of the glue spraying structure in this embodiment is as follows:

[0037] After the electric cylinder 106 is turned on, the slide of the electric cylinder 106 moves downward, driving the cam follower 110 to move downward. The cam follower 110 enters the first guide groove 116, which is located near the glue spraying unit. The glue spraying unit extends and the slide of the electric cylinder 106 continues to move downward. During this stroke, the glue spraying structure continues to operate.

[0038] After the slide of the electric cylinder 106 descends to the corresponding position, the cam follower 110 also moves to the lower left corner of the guide groove or the lower safety groove. At this time, the connecting rod spring 105 on the first spring connecting rod 100 is in a compressed state. When the slide of the electric cylinder 106 starts to move upward, the connecting rod spring 105 tends to return to its original state, and the cam follower 110 is switched to the second guide groove 117 by the connecting rod spring 105, and the glue spraying unit also completes the retraction action.

[0039] The cam follower 110 moves upward along the second guide groove 117 following the slide of the electric cylinder 106. When the slide of the electric cylinder 106 rises to the corresponding position, the cam follower 110 also moves to the upper right corner of the guide groove or the upper safety groove. At this time, the connecting rod spring 105 on the second spring connecting rod 109 is in a compressed state. When the slide of the electric cylinder 106 starts to move downward, the connecting rod spring 105 tends to return to its original state, and the cam follower 110 is switched to the first guide groove 116 by the connecting rod spring 105, and the glue spraying unit also completes the extension action. At this point, a cycle is completed, and the glue spraying mechanism will repeat this cycle until the device is shut down.

[0040] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A glue spraying mechanism that realizes reciprocating motion in different paths with a single power, comprising a glue spraying unit and a lifting unit for driving the glue spraying unit to rise and fall, wherein the lifting unit is slidably connected to the glue spraying unit via a transverse guide rail (108) mounted on a transverse guide rail mounting plate (114), characterized in that: The glue spraying mechanism further comprises a follower unit, the follower unit comprising a cam follower (110) fixedly connected to the transverse guide rail mounting plate (114) and a guide groove for guiding the cam follower (110) to move counterclockwise; when the lifting unit moves, the follower unit moves counterclockwise along the guide groove, thereby realizing reciprocating motion of the glue spraying unit in the horizontal direction; The guide groove comprises a first guide groove (116) and a second guide groove (117) respectively used to guide the cam follower (110) to move downward and upward; a guide block (118) is provided between the first guide groove (116) and the second guide groove (117); guide arc surfaces for guiding the cam follower to switch the guide groove are provided at both ends of the guide block (118); The lifting unit comprises a base mounting plate (101), an electric cylinder mounting plate (102), an electric cylinder (106), a column (115) and a column support; the column support is fixedly connected to the base mounting plate (101); the column (115) is mounted on the column support; the electric cylinder mounting plate (102) is fixedly connected to the column (115); the electric cylinder (106) is mounted on the electric cylinder mounting plate (102); a slider is provided on the transverse guide rail (108), and the slider is fixedly connected to the slide table of the electric cylinder (106); The follower unit further comprises a first spring connecting rod (100), a follower unit connecting plate (107), a second spring connecting rod (109) and a connecting rod support (112); the follower unit connecting plate (107) is fixedly connected to the lifting unit; the guide groove is arranged on the follower unit connecting plate (107); the first spring connecting rod (100) and the second spring connecting rod (109) are both fixed to the follower unit connecting plate (107) via the connecting rod support (112); the roller of the cam follower (110) is installed in the guide groove; one end of the first spring connecting rod (100) and the second spring connecting rod (109) can rotate around the axis of the cam follower (110); the first spring connecting rod (100) and the second spring connecting rod (109) are also movably connected to the connecting rod support (112) respectively.

2. A glue spraying mechanism with a single power to realize reciprocating motion in different paths according to claim 1, characterized in that: Two safety grooves are provided at both ends of the guide groove for preventing the cam follower (110) from escaping from the guide groove.

3. A glue spraying mechanism with a single power to realize reciprocating motion in different paths according to claim 1, characterized in that: The guide groove is provided with a stopper (113) at the point where it collides with the cam follower (110) for reducing impact wear and noise.

4. A glue spraying mechanism with a single power to realize reciprocating motion in different paths according to claim 1, characterized in that: The first guide groove (116) and the second guide groove (117) are both provided with proximity sensors (111) for detecting the position of the cam follower (110).

5. The glue spraying mechanism with single power to realize reciprocating motion in different paths according to claim 1, characterized in that: The glue spraying unit comprises a rotary cylinder connecting plate, a rotary cylinder (103) and an existing glue spraying structure; one end of the rotary cylinder connecting plate is fixedly connected to the transverse guide rail mounting plate (114), and the other end is connected to the rotary cylinder (103); the glue spraying structure is connected to the rotating table of the rotary cylinder (103).

6. The glue spraying mechanism with single power to realize reciprocating motion in different paths according to claim 1, characterized in that: The first spring link (100) and the second spring link (109) are respectively connected to the link support (112) via floating rotating cams; the first spring link (100) and the second spring link (109) are provided with link springs (105) between the axes of the floating rotating cam and the cam follower (110); the floating rotating cam is installed on the link support (112) via a mounting hole; the floating rotating cam can rotate around the central axis of the mounting hole; the floating rotating cam is provided with a through hole for the spring link to pass through; the first spring link (100) and the second spring link (109) can be extended and retracted via the through hole.

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