Glue injection machine for plate heat exchanger frame

Abstract

The utility model provides a glue injection machine for a plate heat exchanger frame, which comprises a glue storage barrel and a pneumatic electromagnetic valve, the glue storage barrel is provided with a glue outlet pipe, the tail end of the glue outlet pipe is connected with a glue dispensing head, the glue injection machine further comprises a rack, a first moving component is arranged on the rack, a workbench is arranged on the first moving component, and the pneumatic electromagnetic valve is arranged on the workbench. A second moving assembly is further installed on the machine frame, the second moving assembly is erected above the working table, the glue storage barrel is installed on the second moving assembly, and one or more heat exchanger frame templates are placed on the surface of the working table. And the pneumatic electromagnetic valve is arranged on the glue outlet pipe. The working table is driven by the first moving assembly, the glue storage barrel and the glue dispensing head are driven by the second moving assembly, all-directional displacement is achieved, glue injection of the metal plate type heat exchanger can be completed, uniform-speed movement of the glue dispensing head can be achieved, the glue storage amount can be accurately controlled by starting an electromagnetic valve, and the glue dispensing efficiency is improved. And uniform and stable dispensing of the plate heat exchanger is further ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of plate heat exchanger production equipment, in particular to a glue injection machine for a plate heat exchanger frame. Background Art

[0002] The plate heat exchanger is a high-efficiency heat exchanger made of a series of metal sheets with a certain corrugated shape. Thin rectangular channels are formed between various plates, and heat is exchanged through the plates. The plate heat exchanger is an ideal equipment for liquid-liquid and liquid-steam heat exchange. It has the characteristics of high heat exchange efficiency, small heat loss, compact and light structure, small footprint, wide application and long service life. Under the same pressure loss, its heat transfer coefficient is 3-5 times higher than that of the tube heat exchanger, the footprint is one-third of that of the tube heat exchanger, and the heat recovery rate can be as high as more than 90%. The types of plate heat exchangers are mainly frame type (detachable) and brazed type. The plate forms mainly include herringbone corrugated plates, horizontal straight corrugated plates and tumor-shaped plates.

[0003] At present, manual glue injection is adopted in the production process of metal plate heat exchangers. Since the glue injection is done by holding the glue injection head, the hand speed is uneven and sometimes fast and sometimes slow during the manual movement, which easily leads to insufficient stability of glue injection quality and uneven glue coating. Utility Model Content

[0004] In order to solve the above problems, the purpose of the utility model is to provide a glue injection machine for a plate heat exchanger frame.

[0005] The utility model is implemented by the following method: a glue injection machine for a plate heat exchanger frame, comprising a glue storage cylinder and a pneumatic solenoid valve, the glue storage cylinder is provided with a glue outlet pipe, the end of the glue outlet pipe is connected to a glue dispensing head, and also comprises a frame, the frame is provided with a first moving component, the first moving component is provided with a workbench, the frame is also equipped with a second moving component, the second moving component is mounted above the workbench, the glue storage cylinder is installed on the second moving component, the surface of the workbench is used to place one or more heat exchanger frame templates; the glue outlet pipe is provided with the pneumatic solenoid valve.

[0006] Preferably, the first moving assembly includes a Y-axis moving part and a Z-axis moving part, the Z-axis moving part is mounted on the Y-axis moving part, and the workbench is mounted on the Z-axis moving part.

[0007] Preferably, the Y-axis moving member includes a first drive motor, a first guide rail and a first lead screw facing the Y-axis, the first drive motor and the first guide rail are installed on the upper surface of the frame, the output shaft of the first drive motor is connected to the first lead screw, and the first lead screw is penetrated by a first nut; two first guide rails are respectively arranged on both sides of the first lead screw and are parallel to the first lead screw, and a moving plate is installed on the two first guide rails by a slider, and the moving plate is fixed to the outer surface of the first nut, the Z-axis moving member is installed on the moving plate, and proximity switches are provided at both ends of the first guide rail.

[0008] Preferably, the Z-axis moving part is four first lifting cylinders respectively installed at the four corners of the moving plate, and the upper ends of the push rods of the first lifting cylinders are fixed to the workbench.

[0009] Preferably, the second moving assembly includes an X-axis moving part and a gantry, the legs of the gantry are fixed to the upper surface of the frame away from the workbench, the X-axis moving part is installed on the gantry, the X-axis moving part is installed with a displacement plate, and the rubber storage cylinder is installed on the displacement plate.

[0010] Preferably, the X-axis moving member includes a second drive motor, a second guide rail and a second lead screw facing the X-axis, the second guide rail and the second drive motor are installed on the gantry, the output shaft of the second drive motor is connected to the second lead screw, and the second lead screw is penetrated by a second nut; two second guide rails are respectively arranged on both sides of the second lead screw and are parallel to the second lead screw, and the two second guide rails are installed and connected to the displacement plate by a slider, and the displacement plate is fixed to the outer surface of the second nut.

[0011] Preferably, proximity switches are provided at both ends of the second guide rail, buffers are provided at both ends of the second lead screw, and a collision block capable of contacting and colliding with the buffer is provided on the lower surface of the displacement plate.

[0012] Preferably, a foldable dust cover and a drag chain are installed on the gantry, one end of the foldable dust cover is fixed to the gantry, and the other end of the foldable dust cover is fixedly connected to the displacement plate; one end of the drag chain is fixed to the gantry, and the other end of the drag chain is fixedly connected to the displacement plate.

[0013] Preferably, a rotatable arm bracket is also installed on the frame, an operation panel is installed on the arm bracket, and a control box is installed in the frame.

[0014] Preferably, the axis at the outlet of the dispensing head is vertically downward, and the outlet end of the dispensing head is parallel to the horizontal plane or is a bevel cut; or, the bottom of the dispensing head is bent, and the axis at the outlet of the dispensing head forms an acute angle or a right angle with the vertical direction. A rotating base is fixedly installed on the displacement plate, and the rotating base is rotatably connected to the turntable. A connecting pipe is provided in the turntable, and the connecting pipe is rotatably connected to the glue outlet pipe for connecting the glue outlet pipe and the dispensing head. The outer peripheral surface of the turntable is provided with meshing teeth. A Z-axis motor is also installed on the rotating base, and the output shaft of the Z-axis motor is provided with gears that mesh with the turntable for transmission.

[0015] The beneficial effects of the present utility model are as follows: the present utility model provides a glue injection machine for a plate heat exchanger frame. Compared with the prior art, the present utility model has at least the following technical effects: 1. By installing the glue storage cylinder and the glue dispensing head on the second moving component, and installing the workbench for placing the heat exchanger frame template on the first moving component, the two can achieve omnidirectional relative displacement under the drive of the first moving component and the second moving component, and can complete the glue injection on the surface of the metal plate heat exchanger. Compared with the original manual glue dispensing, the uniform speed movement of the glue dispensing head can be achieved through mechanical drive, and the amount of glue storage can be accurately controlled by starting the solenoid valve, further ensuring that the glue dispensing of the plate heat exchanger is uniform and stable. 2. The Y-axis moving part of the first moving component and the X-axis moving part of the second moving component are designed to use the matching drive form of the lead screw and the lead screw nut, which can ensure the transmission accuracy and ensure that the glue dispensing head and the workbench move at a relatively uniform speed for glue dispensing. 3. The curved dispensing head and the vertical dispensing head can be replaced as needed. The curved dispensing head is driven to rotate by the Z-axis motor and cooperates with the Z-axis moving part of the first moving component to realize dispensing on the side of the plate heat exchanger that needs vertical dispensing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The utility model is a three-dimensional structural schematic diagram of a glue injection machine for a plate heat exchanger frame.

[0017] Figure 2 The utility model is a side view of a glue injection machine for a plate heat exchanger frame.

[0018] Figure 3 The utility model is a front view of a glue injection machine for a plate heat exchanger frame.

[0019] Figure 4 The utility model is a schematic diagram of a glue injection machine for a plate heat exchanger frame after being installed with a drag chain and a dust cover.

[0020] Explanation of the accompanying drawings: 1. Glue storage cylinder; 2. Pneumatic solenoid valve; 3. Glue discharge hose; 4. Glue dispensing head; 5. Rack; 6. First moving assembly; 61. Y-axis moving part; 611. First drive motor; 612. First guide rail; 613. First lead screw; 614. Moving plate; 62. Z-axis moving part; 7. Workbench; 8. Second moving assembly; 81. Second drive motor; 82. Second guide rail; 83. Gantry; 84. Displacement plate; 85. Second lead screw; 86. Rotating base; 87. Z-axis motor; 9. Heat exchanger frame template; 10. Proximity switch; 11. Buffer; 12. Folding dust cover; 13. Drag chain; 14. Arm bracket; 15. Operation panel; 16. Control box. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0022] See also Figures 1 to 4 A glue injection machine for a plate heat exchanger frame, comprising a glue storage cylinder 1 and a pneumatic solenoid valve 2, the glue storage cylinder 1 being provided with a glue outlet pipe 3, the end of the glue outlet pipe 3 being connected to a glue dispensing head 4, and also comprising a frame 5, the frame 5 being provided with a first moving component 6, the first moving component 6 being provided with a workbench 7, the frame 5 being further provided with a second moving component 8, the second moving component 8 being mounted above the workbench 7, the glue storage cylinder 1 being mounted on the second moving component 8, the surface of the workbench 7 being used for placing one or more heat exchanger frame templates 9; the glue outlet pipe 3 being provided with the pneumatic solenoid valve 2. By installing the glue storage cylinder 1 and the glue dispensing head on the second moving component 8, and installing the workbench 7 for placing the heat exchanger frame template 9 on the first moving component 6, the two can achieve omnidirectional relative displacement under the drive of the first moving component 6 and the second moving component 8, and the glue injection on the surface of the metal plate heat exchanger can be completed. Compared with the traditional manual movement of the glue dispensing head 4, the uniform speed movement of the glue dispensing head 4 can be achieved through mechanical drive, and the glue storage amount can be accurately controlled by the setting of the starting solenoid valve, further ensuring that the glue dispensing of the plate heat exchanger is uniform and stable. There are multiple workstations on the workbench 7, which can be used to place multiple heat exchanger frame templates 9. At least one set of heat exchanger frame templates 9 can be injected with glue each time, and several sets of heat exchanger frame templates 9 can also be injected with glue together.

[0023] See also Figures 1 to 4Preferably, the first moving assembly 6 includes a Y-axis moving member 61 and a Z-axis moving member 62, the Z-axis moving member 62 is mounted on the Y-axis moving member 61, and the workbench 7 is mounted on the Z-axis moving member 62. The Y-axis moving member 61 includes a first drive motor 611, a first guide rail 612 and a first lead screw 613 facing the Y-axis, the first drive motor 611 and the first guide rail 612 are mounted on the upper surface of the frame 5, the output shaft of the first drive motor 611 is connected to the first lead screw 613, and the first lead screw 613 is penetrated with a first nut; two first guide rails 612 are respectively arranged on both sides of the first lead screw 613, parallel to the first lead screw 613, and the two first guide rails 612 are connected to a moving plate 614 by a slider, the moving plate 614 is fixed to the outer surface of the first nut, the Z-axis moving member 62 is mounted on the moving plate 614, and proximity switches are arranged at both ends of the first guide rail 612. The Y-axis moving member 61 of the first moving assembly 6 is designed to be driven by a screw and a screw nut, which can ensure transmission accuracy and ensure that the work moves at a uniform speed along the Y-axis direction to ensure that the dispensing head 4 moves at a uniform speed along the Y-axis direction relative to the workbench 7 for dispensing. Proximity switches are set at both ends of the guide rail to determine the spatial position of the workbench 7 in the Y-axis direction.

[0024] See also Figures 1 to 4 Preferably, the Z-axis moving member 62 is four first lifting cylinders respectively installed at the four corners of the moving plate 614, and the upper end of the push rod of the first lifting cylinder is fixed to the workbench 7. The synchronous operation of the four lifting cylinders can ensure that the workbench 7 rises smoothly.

[0025] See also Figures 1 to 4 Preferably, the second moving assembly 8 includes an X-axis moving part and a gantry 83, the legs of the gantry 83 are fixed to the upper surface of the frame 5 away from the workbench, the X-axis moving part is installed on the gantry 83, the X-axis moving part is installed with a displacement plate 84, and the rubber storage cylinder 1 is installed on the displacement plate 84. The X-axis moving part includes a second drive motor 81, a second guide rail 82 and a second lead screw 85 facing the X-axis, the second guide rail 82 and the second drive motor 81 are installed on the gantry 83, the output shaft of the second drive motor 81 is connected to the second lead screw 85, and the second lead screw 85 is penetrated with a second nut; two second guide rails 82 are respectively arranged on both sides of the second lead screw 85, parallel to the second lead screw 85, and the two second guide rails 82 are connected to the displacement plate 84 by a slider, and the displacement plate 84 is fixed to the outer surface of the second nut. The X-axis moving part of the second moving assembly 8 is designed to be driven by a screw and a screw nut, which can ensure transmission accuracy, ensure that the dispensing head 4 moves at a uniform speed along the X-axis direction to dispense glue, and ensure uniform dispensing.

[0026] See also Figure 1 Preferably, proximity switches 10 are provided at both ends of the second guide rail 82, buffers 11 are provided at both ends of the second lead screw 85, and a collision block capable of contacting and colliding with the buffer 11 is provided on the lower surface of the displacement plate 84. Buffering and shock absorption absorb impact force to ensure long-term stable operation of the second moving assembly.

[0027] See also Figure 4 Preferably, a foldable dust cover 12 and a drag chain 13 are installed on the gantry 83, one end of the foldable dust cover 12 is fixed to the gantry 83, and the other end of the foldable dust cover is fixedly connected to the displacement plate 84; one end of the drag chain 13 is fixed to the gantry 83, and the other end of the drag chain 13 is fixedly connected to the displacement plate 84. The drag chain 13 is used to pass the cable connecting the Z-axis motor and the pneumatic solenoid valve 2 to avoid cable wear.

[0028] See also Figures 1 to 4 Preferably, a rotatable arm support 14 is also installed on the frame 5, an operation panel 15 is installed on the arm support 14, and a control box 16 is installed in the frame 5. It is convenient to adjust the angle of the operation panel 15 according to the needs of the operator to set the dispensing trajectory and the amount of glue.

[0029] See also Figures 1 to 4 Preferably, a control box 16 is also provided in the frame 5, and the control box 16 is electrically connected to the operation panel 15, the first moving component 6, the second moving component 8, the pneumatic solenoid valve 2, the Z-axis motor, and the proximity switch 10. The operation panel 15 is used to input the PLC control program to the control, and the control box 16 controls the operation of the corresponding components according to the input PLC control program. The control box 16, the operation panel 15, etc. are all mature existing equipment, and the specific control methods are all existing technologies and will not be described in detail, and no protection requirements are made. The purpose of the utility model is to protect a specific mechanical structure.

[0030] See also Figures 1 to 4Preferably, the axis at the outlet of the dispensing head 4 is vertically downward, and the outlet end of the dispensing head 4 is parallel to the horizontal plane or is a bevel cut; or, the bottom of the dispensing head 4 is bent (not shown), and the axis at the outlet of the dispensing head 4 forms an acute angle or a right angle with the vertical direction (preferably 45°-90°), and a rotating base 86 is fixedly installed on the displacement plate 84, and the rotating base 86 is rotatably connected to the turntable, and a connecting pipe is provided in the turntable, and the connecting pipe is rotatably connected to the glue outlet pipe 3 for connecting the glue outlet pipe 3 and the dispensing head 4, and the outer peripheral surface of the turntable is provided with meshing teeth, and a Z-axis motor 87 is also installed on the rotating base 86, and the output shaft of the Z-axis motor 87 is provided with a gear that meshes with the turntable for transmission. The curved dispensing head 4 and the vertical dispensing head 4 can be replaced as needed. The curved dispensing head 4 is driven to rotate by the Z-axis motor 87 and cooperates with the Z-axis moving part 62 of the first moving assembly 6 to dispense glue on the side of the plate heat exchanger that needs vertical dispensing. The dispensing head 4 can dispense glue in three dimensions.

[0031] The utility model has the following working principle:

[0032] When performing flat glue injection, first place the plate heat exchanger to be injected with glue on the upper surface of the workbench 7, align the glue dispensing head 4 with the heat exchanger frame template 9 on the workbench 7, and then open the pneumatic solenoid valve 2 on the glue outlet pipe 3. The first moving component 6 drives the workbench 7 to move according to the set trajectory, and the second moving component 8 drives the glue dispensing head 4 to move according to the set trajectory for glue injection. That is, the glue dispensing head 4 moves relative to the heat exchanger frame template 9 on the workbench 7 according to the set trajectory. After the glue injection is completed, the heat exchanger frame template 9 is replaced for the next glue injection.

[0033] When performing vertical glue injection, the original glue dispensing head 4 needs to be replaced with a glue dispensing head 4 with a bent bottom. First, place the plate heat exchanger to be injected with glue on the upper surface of the workbench 7, align the glue dispensing head 4 with the heat exchanger frame template 9 on the workbench 7, and then open the pneumatic solenoid valve 2 on the glue outlet pipe 3. The first moving component 6 drives the workbench 7 to move according to the set trajectory, and the second moving component 8 drives the glue dispensing head 4 to move according to the set trajectory for glue injection. At the same time, the Z-axis motor 87 drives the glue dispensing head 4 to rotate, so that the glue outlet of the glue dispensing head 4 is always facing the heat exchanger frame template 9, so that the glue dispensing head 4 moves relative to the heat exchanger frame template 9 on the workbench 7 according to the set trajectory to inject glue. After the glue injection is completed, the heat exchanger frame template 9 is replaced for the next glue injection.

[0034] The pneumatic solenoid valve 2 arranged on the glue outlet pipe 3 can ensure that the glue dispensing head 4 can stably discharge glue. The first moving component 6 and the second moving component 8 drive the workbench 7 and the glue storage cylinder 1 (i.e., the glue dispensing head 4) to perform mobile glue injection, thereby replacing manual movement of the glue dispensing head 4 to inject glue. This can ensure uniform speed glue dispensing to avoid uneven glue coating and ensure stable glue injection quality.

[0035] Several points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, and can be mechanical or electrical connections, or internal connectivity between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative position relationships. When the absolute position of the object being described changes, the relative position relationship may change.

[0036] Secondly: In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the usual design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other.

[0037] Finally, the above is only a preferred implementation of the present utility model, and the protection scope of the present utility model is not limited to the above embodiments. All technical solutions under the concept of the present utility model belong to the protection scope of the present utility model.

[0038] It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications without departing from the principle of the utility model should also be regarded as within the protection scope of the utility model.

Claims

1. A glue injection machine for a plate heat exchanger frame, comprising a glue storage cylinder and a pneumatic solenoid valve, wherein the glue storage cylinder is provided with a glue outlet pipe, and the end of the glue outlet pipe is connected to a glue dispenser, characterized in that: It also includes a frame, on which a first moving component is provided, on which a workbench is provided, on which a second moving component is also installed, and the second moving component is mounted above the workbench, on which the glue storage cylinder is installed, and on which the surface of the workbench is used to place one or more heat exchanger frame templates; and on the glue outlet pipe, the pneumatic solenoid valve is provided.

2. The glue injection machine for a plate heat exchanger frame according to claim 1, characterized in that: The first moving component includes a Y-axis moving part and a Z-axis moving part. The Z-axis moving part is installed on the Y-axis moving part, and the workbench is installed on the Z-axis moving part.

3. The glue injection machine for a plate heat exchanger frame according to claim 2, characterized in that: The Y-axis moving part includes a first driving motor, a first guide rail and a first lead screw facing the Y-axis, the first driving motor and the first guide rail are installed on the upper surface of the frame, the output shaft of the first driving motor is connected to the first lead screw, and the first lead screw is penetrated by a first nut; two first guide rails are respectively arranged on both sides of the first lead screw, parallel to the first lead screw, and a moving plate is installed and connected on the two first guide rails by a slider, the moving plate is fixed to the outer surface of the first nut, the Z-axis moving part is installed on the moving plate, and proximity switches are provided at both ends of the first guide rail.

4. The glue injection machine for a plate heat exchanger frame according to claim 3, characterized in that: The Z-axis moving part is four first lifting cylinders respectively installed at the four corners of the moving plate, and the upper ends of the push rods of the first lifting cylinders are fixed to the workbench.

5. The glue injection machine for a plate heat exchanger frame according to claim 1, characterized in that: The second moving assembly includes an X-axis moving part and a gantry, the legs of the gantry are fixed to the upper surface of the frame away from the workbench, the X-axis moving part is installed on the gantry, the X-axis moving part is installed with a displacement plate, and the rubber storage cylinder is installed on the displacement plate.

6. The glue injection machine for a plate heat exchanger frame according to claim 5, characterized in that: The X-axis moving part includes a second drive motor, a second guide rail and a second lead screw facing the X-axis, the second guide rail and the second drive motor are installed on the gantry, the output shaft of the second drive motor is connected to the second lead screw, and the second lead screw is penetrated by a second nut; two second guide rails are respectively arranged on both sides of the second lead screw and are parallel to the second lead screw, and the two second guide rails are installed and connected to the displacement plate by a slider, and the displacement plate is fixed to the outer surface of the second nut.

7. The glue injection machine for a plate heat exchanger frame according to claim 6, characterized in that: Proximity switches are provided at both ends of the second guide rail, buffers are provided at both ends of the second lead screw, and a collision block capable of colliding with the buffer is provided on the lower surface of the displacement plate.

8. The glue injection machine for a plate heat exchanger frame according to claim 6, characterized in that: A foldable dust cover and a drag chain are installed on the gantry, one end of the foldable dust cover is fixed to the gantry, and the other end of the foldable dust cover is fixedly connected to the displacement plate; one end of the drag chain is fixed to the gantry, and the other end of the drag chain is fixedly connected to the displacement plate.

9. The glue injection machine for a plate heat exchanger frame according to claim 1, characterized in that: A rotatable arm bracket is also installed on the frame, an operation panel is installed on the arm bracket, and a control box is installed in the frame.

10. The glue injection machine for a plate heat exchanger frame according to claim 5, characterized in that: The axis at the outlet of the dispensing head is vertically downward, and the outlet end of the dispensing head is parallel to the horizontal plane or is a bevel cut; or, the bottom of the dispensing head is bent, and the axis at the outlet of the dispensing head forms an acute angle or a right angle with the vertical direction; a rotating base is fixedly installed on the displacement plate, and the rotating base is rotatably connected to the turntable. A connecting pipe is provided in the turntable, and the connecting pipe is rotatably connected to the glue outlet pipe for connecting the glue outlet pipe and the dispensing head. The outer peripheral surface of the turntable is provided with meshing teeth. A Z-axis motor is also installed on the rotating base, and the output shaft of the Z-axis motor is provided with gears that mesh with the turntable for transmission.

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