Constant-temperature glue discharging device

Abstract

The utility model relates to the technical field of dispensing, in particular to a constant-temperature glue discharging device which comprises a glue discharging valve body, a glue barrel, a glue discharging block and a heating base, a valve body cover plate is further arranged on the glue discharging valve body, a containing cavity is arranged between the valve body cover plate and the glue discharging valve body, and a piezoelectric assembly, a lever and a firing pin assembly are arranged in the containing cavity. The glue outlet block is arranged below the glue outlet valve body and matched with the firing pin assembly, the heating base is connected with the glue outlet block to heat the glue outlet block, a heat insulation column is further arranged at the top of the glue outlet block, the top face of the heat insulation column abuts against the bottom face of the glue outlet valve body, an air inlet and an air outlet are further formed in the valve body cover plate, and the air inlet and the air outlet are connected with the air cooling assembly. The heat insulation column is arranged between the glue outlet block and the glue outlet valve body, so that the glue outlet valve body is prevented from conducting heat to the glue outlet valve body, the air cooling assembly on the valve body cover plate can timely discharge heat generated when the piezoelectric assembly works, the piezoelectric assembly is prevented from being damaged due to high temperature, and the temperature of the glue outlet valve body is constant.

Description

Technical Field

[0001] The utility model relates to the technical field of glue dispensing, in particular to a constant temperature glue dispensing device. Background Art

[0002] The lever-type dispensing valve, also known as the dispensing injection valve, is suitable for packaging work in the electronics industry. With the rapid development of the electronics industry, the requirements for electronic packaging are getting higher and higher. In response to the high-demand electronic packaging technology, the lever-type dispensing valve is increasingly widely used in the field of electronic packaging due to its high efficiency and high precision. The piezoelectric stack with high response speed and high precision is used as the core driving component of the lever-type dispensing valve body.

[0003] The piezoelectric stack in the lever-type dispensing valve needs to move frequently during operation, which will cause the temperature of the components to rise. The temperature increase will affect the dispensing accuracy and efficiency. In severe cases, it will cause damage to the piezoelectric stack. Therefore, the lever-type dispensing valve generally needs to be equipped with a corresponding heat dissipation structure for heat dissipation. Utility Model Content

[0004] In view of the above technical problems in the prior art, the utility model provides a constant temperature glue discharging device.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A constant temperature glue discharging device includes a glue discharging valve body, a glue barrel, a glue discharging block and a heating base. The glue discharging block is arranged at the bottom of the glue discharging valve body and cooperates with the glue discharging valve body to discharge glue. The heating base is connected to the glue discharging block to heat the glue discharging block. An insulation column is also provided on the top of the glue discharging block. The top surface of the insulation column abuts against the bottom surface of the glue discharging valve body. The glue barrel is arranged on the side wall of the glue discharging valve body and is connected to the glue discharging block. A valve body cover is also provided on the glue discharging valve body. An accommodating chamber is provided between the valve body cover and the glue discharging valve body. A piezoelectric component, a lever and a striker assembly are provided in the accommodating chamber. An air inlet and an air outlet are also provided on the valve body cover, and an air cooling component is connected to the air inlet and the air outlet.

[0007] Preferably, the air cooling assembly includes an air inlet pipe and an air outlet pipe, the air inlet pipe includes a vertical pipe and a bent pipe, the vertical pipe and the bent pipe are detachably connected, and a first filter screen and a second filter screen are also provided in the air inlet pipe.

[0008] Preferably, the first filter is a dustproof screen, which is arranged in the vertical tube, and the second filter is a filter cotton, which is arranged at the connection between the vertical tube and the bent tube.

[0009] Preferably, the piezoelectric assembly includes a piezoelectric stack block and a positioning block, the top of the positioning block cooperates with the first positioning column, the bottom of the positioning block is connected to the piezoelectric stack block, the top of the piezoelectric stack block is provided with a spherical convex arc surface, and the bottom of the positioning block is provided with a spherical inner groove adapted thereto.

[0010] Preferably, the firing pin assembly includes a firing pin body, a firing pin guide sleeve, a buffer spring and a return spring. The firing pin body is sleeved in the firing pin guide sleeve and can slide up and down. The buffer spring is sleeved between the firing pin body and the firing pin guide sleeve, and the return spring is sleeved on the firing pin guide sleeve.

[0011] Preferably, one end of the lever cooperates with the piezoelectric component, a U-shaped groove is provided at the bottom end of the piezoelectric stack block in the piezoelectric component, a U-shaped block adapted to it is provided at the top left side of the lever, the other end of the lever cooperates with the striker assembly, a spherical impact platform is provided on the bottom right side of the lever for striking the striker body, and the top surface of the reset spring abuts against the bottom surface of the lever for resetting the lever.

[0012] Preferably, a glue outlet channel is provided in the glue outlet block, and the glue outlet channel is connected to the accommodating chamber. A nozzle is provided on the glue outlet block, and the nozzle is arranged at the outlet of the glue outlet channel. The striker body cooperates with the nozzle through the glue outlet channel, and a nozzle cap is also provided on the nozzle. A glue inlet channel is also provided in the glue outlet block, and the glue outlet of the glue inlet channel is connected to the glue outlet channel, and the glue inlet channel is located above the nozzle.

[0013] Preferably, the glue outlet block is further provided with a Luer connector, the glue inlet of the glue inlet channel is connected to the glue outlet of the Luer connector, and the glue inlet of the Luer connector is connected to the glue barrel.

[0014] Preferably, the heating base includes a heating block and an insulation block, the heating block is connected to the insulation block, a first groove is provided on the heating block, and a second groove is provided on the insulation block. The glue discharge block is connected to the heating base through the first groove and the second groove. A positioning groove is also provided below the first groove, and the nozzle cap is arranged in the positioning groove.

[0015] Beneficial effects of the utility model:

[0016] The utility model provides a constant temperature glue discharging device, which includes a glue discharging valve body, a glue barrel, a glue discharging block and a heating base. The glue discharging valve body is also provided with a valve body cover plate, and an accommodating chamber is provided between the valve body cover plate and the glue discharging valve body. A piezoelectric component, a lever and a striker assembly are provided in the accommodating chamber. The glue discharging block is arranged below the glue discharging valve body and cooperates with the striker assembly. The heating base is connected to the glue discharging block to heat the glue discharging block. An insulation column is also provided on the top of the glue discharging block, and the top surface of the insulation column abuts against the bottom surface of the glue discharging valve body. An air inlet and an air outlet are also provided on the valve body cover plate, and an air cooling component is connected to the air inlet and the air outlet. An insulation column is provided between the glue discharging block and the glue discharging valve body to prevent the glue discharging valve body from conducting heat to the glue discharging valve body, and the air cooling component on the valve body cover plate can discharge the heat generated by the piezoelectric component during operation in time to prevent the piezoelectric component from being damaged due to high temperature, so that the temperature of the glue discharging valve body is constant. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of a constant temperature glue discharging device in the embodiment.

[0018] Figure 2 Schematic diagram of the explosion of the valve body cover and the air-cooling assembly in the embodiment.

[0019] Figure 3 2 is a cross-sectional view of the air inlet pipe in the embodiment.

[0020] Figure 4 2. It is a cross-sectional view of a constant temperature glue discharging device in an embodiment.

[0021] Figure 5 Schematic diagram of the structure of the piezoelectric component in the embodiment.

[0022] Figure 6 Schematic diagram of the structure of the lever and striker assembly in the embodiment.

[0023] Figure 7 It is a schematic diagram of the explosion of the glue discharging block and the heating base in the embodiment.

[0024] 1. Dispensing valve body; 101. Valve body cover; 102. Air inlet; 103. Air outlet; 104. Air cooling assembly; 105. Air inlet pipe; 106. Vertical pipe; 107. First filter screen; 108. Second filter screen; 109. Bend pipe; 110. Air outlet pipe; 111. Accommodating chamber; 112. First positioning post; 113. Second positioning post; 114. Piezoelectric assembly; 115. Piezoelectric stack; 116. Spherical convex arc surface; 117. U-shaped groove; 118. Positioning block; 119. Spherical inner groove; 120. Lever; 121. U-shaped block; 122. Spherical impact platform; 123. Strike pin assembly; 124. Strike pin body; 125. Strike pin guide sleeve; 126. Buffer spring; 127. Return spring;

[0025] 2. Glue discharging block; 201. Glue discharging channel; 202. Glue inlet channel; 203. Nozzle; 204. Nozzle cap; 205. Insulation column; 206. Luer connector;

[0026] 3. Heating base; 301. Heating block; 302. First groove; 303. Positioning groove; 304. Insulation block; 305. Second groove;

[0027] 4. Glue barrel. DETAILED DESCRIPTION

[0028] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0029] like Figures 1 to 7As shown, a constant temperature glue discharging device includes a glue discharging valve body 1, a glue barrel 4, a glue discharging block 2 and a heating base 3. The glue discharging block 2 is arranged at the bottom of the glue discharging valve body 1 and cooperates with the glue discharging valve body 1 to discharge glue. An open fixing ring is connected to the side wall of the glue discharging valve body 1, and the glue barrel 4 is arranged on the fixing ring. The glue outlet of the glue barrel 4 is connected to the glue discharging block 2. The heating base 3 component is arranged below the glue discharging block 2 and connected to the glue discharging block 2 to heat the glue discharging block 2.

[0030] The dispensing valve body 1 is also provided with a valve cover plate 101, which is detachably connected to the dispensing valve body 1 via bolt fasteners. A receiving chamber 111 is defined between the valve cover plate 101 and the dispensing valve body 1. Within the receiving chamber 111, a piezoelectric assembly 114, a lever 120, and a striker assembly 123 are sequentially arranged from top to bottom. The piezoelectric assembly 114 includes a piezoelectric stack 115 and a positioning block 118. The positioning block 118 is disposed above and connected to the piezoelectric stack 115. A spherical convex surface 116 is provided at the upper end of the piezoelectric stack 115, and a spherical inner groove 119 is provided at the lower end of the positioning block 118. The spherical convex surface 116 is adapted to fit within the spherical inner groove 119.

[0031] A first positioning column 112 and a second positioning column 113 are also provided in the accommodating chamber 111. The first positioning column 112 and the second positioning column 113 are cylindrical. The first positioning column 112 is set at the top of the accommodating chamber 111. The first positioning column 112 cooperates with the positioning block 118 to position the positioning block 118. Specifically, an arc-shaped groove is provided on the top of the positioning block 118, and the arc-shaped groove is adapted to the cylindrical surface of the first positioning column 112. The second positioning column 113 is set at the bottom end of the accommodating chamber 111, and the lever 120 is set on the second positioning column 113. Among them, one end of the lever 120 cooperates with the piezoelectric stack block 115 in the piezoelectric component 114. Specifically, a U-shaped groove 117 is provided at the bottom end of the piezoelectric stack block 115, and a U-shaped block 121 is provided on the top left side of the lever 120. The U-shaped groove 117 and the U-shaped block 121 are adapted to each other. Since the U-shaped groove 117 and the U-shaped block 121 are adapted to each other, when the piezoelectric component 114 and the lever 120 are installed, a certain guiding function is provided to ensure the installation accuracy between the piezoelectric component 114 and the lever 120.

[0032] The other end of the lever 120 cooperates with the striker assembly 123, wherein the striker assembly 123 includes a striker body 124, a striker guide sleeve 125, a buffer spring 126 and a return spring 127. The striker body 124 is sleeved in the striker guide sleeve 125 and the striker body 124 can slide up and down, the return spring 127 is sleeved on the striker guide sleeve 125, and the buffer spring 126 is sleeved between the striker and the striker guide sleeve 125. The lower end of the buffer spring 126 contacts the striker guide sleeve 125, and the upper end of the buffer spring 126 contacts the striker. When the striker body 124 is pressed downward by force, the buffer spring 126 can avoid direct collision between the striker body 124 and the striker guide sleeve 125 and play a buffering role. A spherical impact platform 122 is provided on the bottom surface of the right side of the lever 120. Due to the provision of the spherical impact platform 122, direct collision between the lever 120 and the striker body 124 is avoided, thereby extending the service life of the lever 120.

[0033] During use, when the piezoelectric assembly 114 is energized, the piezoelectric stack block 115 in the piezoelectric assembly 114 will undergo slight deformation, thereby generating a tiny displacement. Since the lever 120 is arranged at the bottom of the piezoelectric stack block 115, the piezoelectric stack block 115 drives the lever 120 to press down and hit the striker body 124. When the piezoelectric stack block 115 drives the lever 120 to hit the striker body 124, the return spring 127 in the striker assembly 123 resets the lever 120. Specifically, the bottom end of the return spring 127 contacts the striker guide sleeve 125, and the top end of the return spring 127 contacts the lever 120. When the lever 120 hits the striker body 124, the return spring 127 pushes the lever 120 upward under the action of the elastic force to achieve reset.

[0034] Furthermore, an air inlet 102 and an air outlet 103 are provided on the valve body cover 101. The air inlet 102 is arranged above the air outlet 103. An air cooling component 104 is connected to the air inlet 102 and the air outlet 103. The air cooling component 104 includes an air inlet pipe 105 and an air outlet pipe 110. The cooling air enters from the air inlet pipe 105 to dissipate the heat of the piezoelectric component 114 in the glue discharging valve body 1 and is then discharged from the air outlet pipe 110 in a cycle to achieve the heat dissipation effect.

[0035] The air inlet duct 105 includes a vertical tube 106 and a curved tube 109, which are detachably connected. A first filter 107 and a second filter 108 are also provided within the air inlet duct 105. The first filter 107 is a dust screen, and the second filter 108 is a replaceable filter. The air cooling assembly 104 is provided on the valve body cover 101 to promptly dissipate heat generated by the piezoelectric assembly 114 during operation, preventing damage to the piezoelectric assembly 114 due to high temperatures. The first and second filters 107 and 108 are provided within the air inlet duct 105 to filter dust and moisture from the air, preventing dust and moisture in the cooling air from entering the dispensing valve body 1, potentially damaging the piezoelectric assembly 114 and causing a short circuit in the dispensing valve body 1, impacting operating efficiency.

[0036] Furthermore, the glue discharge block 2 is arranged below the glue discharge valve body 1 and cooperates with the striker assembly 123 in the glue discharge valve body 1. A glue discharge channel 201 is provided in the glue discharge block 2, and the glue discharge channel 201 is connected to the accommodating chamber 111. A nozzle 203 is provided on the glue outlet of the glue discharge channel 201, and a nozzle cap 204 is also provided on the nozzle 203. The striker body 124 cooperates with the nozzle 203 through the glue discharge channel 201. When the piezoelectric component 114 drives the lever 120 to press down, the lever 120 will hit the striker assembly 123, and the striker body 124 in the striker assembly 123 will push open the nozzle 203 to realize the glue discharge.

[0037] A glue inlet channel 202 is also provided in the glue discharging block 2. The glue outlet of the glue inlet channel 202 is connected to the glue discharging channel 201 and is located above the nozzle 203. An insulating column 205 and a Luer connector 206 are also provided on the top of the glue discharging block 2. The insulating column 205 and the Luer connector 206 are arranged opposite to each other. The insulating column 205 is made of ceramic. The insulating column 205 is adhered to the glue discharging block 2 by glue. The top of the insulating column 205 abuts against the bottom of the glue discharging valve body 1. By arranging the insulating column 205 on the top of the glue discharging block 2, direct contact between the glue discharging block 2 and the glue discharging valve body 1 can be avoided, thereby preventing the heat of the glue discharging block 2 from being transferred to the glue discharging valve body 1. The Luer connector 206 is arranged on the glue inlet channel 202, and the glue outlet of the Luer connector 206 is connected to the glue inlet of the glue inlet channel 202. The glue outlet of the glue barrel 4 is connected to the glue inlet of the Luer connector 206, so that the glue in the glue barrel 4 flows from the glue inlet channel 202 into the glue outlet channel 201.

[0038] Furthermore, a heating base 3 is arranged below the glue discharging block 2 and connected to the glue discharging block 2 to heat the glue discharging block 2. The heating base 3 includes a heating block 301 and an insulating block 304. The heating block 301 and the insulating block 304 are detachably connected. A first groove 302 is provided on the heating block 301, and a second groove 305 is provided on the insulating block 304. The body of the glue discharging block 2 is arranged in the first groove 302 and the second groove 305. A positioning groove 303 is also provided below the first groove 302. The positioning groove 303 cooperates with the nozzle cap 204. During installation, first align the positioning groove 303 with the nozzle cap 204, and then move the heating base 3 upward. When the nozzle cap 204 passes through the positioning groove 303, the installation is completed. At this time, the heating block 301 wraps the side wall and bottom of the glue discharging block 2. When the glue in the glue barrel 4 flows from the glue inlet channel 202 to the glue outlet channel 201, the heating block 301 heats it.

[0039] In the description of the present invention, it is obvious that the embodiments described are only some embodiments of the present invention, rather than all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0040] Therefore, the above detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention as claimed, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0041] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is typically placed when in use. These terms are intended solely to facilitate the description of this utility model and simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc., etc., are used solely for distinction and should not be construed as indicating or implying relative importance.

[0042] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "disposed," "connected," and "connected" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections. They may refer to mechanical connections or electrical connections. They may refer to connections directly or indirectly through an intermediary, or they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

Claims

1. A constant temperature glue discharging device, comprising a glue discharging valve body (1), a glue barrel (4), a glue discharging block (2) and a heating base (3), characterized in that: The glue discharging block (2) is arranged at the bottom of the glue discharging valve body (1) and cooperates with the glue discharging valve body (1) to discharge glue. The heating base (3) is connected to the glue discharging block (2) to heat the glue discharging block (2). The top of the glue discharging block (2) is also provided with a heat insulation column (205). The top surface of the heat insulation column (205) abuts against the bottom surface of the glue discharging valve body (1). The glue barrel (4) is arranged on the side wall of the glue discharging valve body (1) and is connected to the glue discharging block (2). The glue discharging valve body (1) is also provided with a heat insulation column (205). A valve body cover plate (101) is provided, and an accommodating chamber (111) is provided between the valve body cover plate (101) and the discharging valve body (1). A piezoelectric component (114), a lever (120) and a striker component (123) are provided in the accommodating chamber (111). An air inlet (102) and an air outlet (103) are also provided on the valve body cover plate (101), and an air cooling component (104) is connected to the air inlet (102) and the air outlet (103).

2. A constant temperature glue discharging device according to claim 1, characterized in that: The air cooling assembly (104) includes an air inlet pipe (105) and an air outlet pipe (110). The air inlet pipe (105) includes a vertical pipe (106) and a bent pipe (109). The vertical pipe (106) and the bent pipe (109) are detachably connected. A first filter (107) and a second filter (108) are also provided in the air inlet pipe (105).

3. A constant temperature glue discharging device according to claim 2, characterized in that: The first filter (107) is a dustproof screen and is arranged in the vertical tube (106). The second filter (108) is filter cotton and is arranged at the connection between the vertical tube (106) and the bent tube (109).

4. A constant temperature glue discharging device according to claim 1, characterized in that: A first positioning column (112) and a second positioning column (113) are also provided in the accommodating chamber (111). The first positioning column (112) is arranged at the top of the accommodating chamber (111) and cooperates with the piezoelectric component (114). The second positioning column (113) is arranged at the bottom of the accommodating chamber (111). The lever (120) is arranged on the second positioning column (113).

5. A constant temperature glue discharging device according to claim 4, characterized in that: The piezoelectric assembly (114) includes a piezoelectric stack block (115) and a positioning block (118). The top of the positioning block (118) cooperates with the first positioning column (112), and the bottom of the positioning block (118) is connected to the piezoelectric stack block (115). The top of the piezoelectric stack block (115) is provided with a spherical convex arc surface (116), and the bottom of the positioning block (118) is provided with a spherical inner groove (119) adapted thereto.

6. A constant temperature glue discharging device according to claim 5, characterized in that: The striker assembly (123) includes a striker body (124), a striker guide sleeve (125), a buffer spring (126) and a return spring (127). The striker body (124) is sleeved in the striker guide sleeve (125) and the striker body (124) can slide up and down. The buffer spring (126) is sleeved between the striker body (124) and the striker guide sleeve (125). The return spring (127) is sleeved on the striker guide sleeve (125).

7. The constant temperature glue discharging device according to claim 6, characterized in that: One end of the lever (120) is matched with the piezoelectric component (114), the bottom end of the piezoelectric stack block (115) in the piezoelectric component (114) is provided with a U-shaped groove (117), the top left end of the lever (120) is provided with a U-shaped block (121) adapted thereto, the other end of the lever (120) is matched with the striker component (123), the bottom right side of the lever (120) is provided with a spherical impact platform (122) for impacting the striker body (124), the top surface of the reset spring (127) is in contact with the bottom surface of the lever (120) for resetting the lever (120).

8. The constant temperature glue discharging device according to claim 1, characterized in that: A glue outlet channel (201) is provided in the glue outlet block (2), the glue outlet channel (201) is communicated with the accommodating chamber (111), a nozzle (203) is provided on the glue outlet block (2), the nozzle (203) is arranged at the outlet of the glue outlet channel (201), the striker body (124) is matched with the nozzle (203) through the glue outlet channel (201), a nozzle cap (204) is also sleeved on the nozzle (203), a glue inlet channel (202) is also provided in the glue outlet block (2), the glue outlet of the glue inlet channel (202) is communicated with the glue outlet channel (201), and the glue inlet channel (202) is located above the nozzle (203).

9. The constant temperature glue discharging device according to claim 7, characterized in that: The glue outlet block (2) is also provided with a Luer connector (206), the glue inlet of the glue inlet channel (202) is connected to the glue outlet of the Luer connector (206), and the glue inlet of the Luer connector (206) is connected to the glue barrel (4).

10. The constant temperature glue discharging device according to claim 7, characterized in that: The heating base (3) comprises a heating block (301) and a heat insulating block (304), the heating block (301) is connected to the heat insulating block (304), a first groove (302) is provided on the heating block (301), and a second groove (305) is provided on the heat insulating block (304), the glue discharging block (2) is connected to the heating base (3) via the first groove (302) and the second groove (305), a positioning groove (303) is further provided below the first groove (302), and the nozzle cap (204) is arranged in the positioning groove (303).

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