Extruder for hot melt adhesive production

Abstract

The utility model relates to the technical field of hot melt adhesive extrusion equipment, and particularly discloses an extruder for hot melt adhesive production, which comprises an extruder body and a hopper, and the hopper is arranged in a feed port of the extruder body in a sliding manner; the telescopic component is arranged on the extruder body and used for driving the hopper to do reciprocating lifting motion in the vertical direction; the stirring shaft penetrates through the hopper and is rotatably mounted on the hopper; the stirring assembly is installed on the stirring shaft, located in the hopper and used for stirring the hot melt adhesive raw materials located at the junction of the large opening section and the small opening section in the hopper; the transmission gear is arranged at one end of the stirring shaft away from the hopper; the transmission rack is mounted by being meshed with the transmission gear and is arranged on the extruder body along the vertical direction; according to the utility model, the hopper can be driven to shake back and forth in the vertical direction, and hot melt adhesive raw materials at the junction of the large opening section and the small opening section in the hopper can be stirred, so that the hot melt adhesive raw materials are prevented from being blocked in the hopper.

Description

Technical Field

[0001] The utility model relates to the technical field of hot melt adhesive extrusion equipment, in particular to an extruder for hot melt adhesive production. Background Art

[0002] Hot melt extruder is a device that uses hot pressure extrusion to carry out coating. The hot melt adhesive raw material is put into the barrel of the extruder through a hopper. After being melted in the barrel, it is squeezed through the pipe outlet for coating with the help of the screw rod.

[0003] The existing hopper is funnel-shaped with a large top and a small bottom, while the hot melt adhesive raw material is usually in granular form. When the staff puts the granular hot melt adhesive raw material into the hopper, the granular hot melt adhesive raw material is easily blocked at the junction of the large opening section and the small opening section in the hopper, resulting in the hot melt adhesive raw material being unable to enter the hot melt extruder normally, affecting normal working efficiency. Utility Model Content

[0004] In view of the above problems, the utility model provides an extruder for hot melt adhesive production, the purpose of which is to prevent the hot melt adhesive raw material from being blocked in the hopper and ensure the normal operation of the extruder body.

[0005] In order to achieve the above-mentioned invention object, the technical solution adopted by the utility model is as follows:

[0006] Provided is an extruder for hot melt adhesive production, comprising: an extruder body and a hopper, wherein the hopper is slidably arranged in a feed port of the extruder body; a telescopic component, arranged on the extruder body and used for driving the hopper to perform reciprocating lifting motion in a vertical direction; a stirring shaft, which penetrates the hopper and is rotatably mounted on the hopper; a stirring assembly, which is mounted on the stirring shaft and is located in the hopper and is used for stirring the hot melt adhesive raw material at the junction of a large opening section and a small opening section in the hopper; a transmission gear, which is arranged at one end of the stirring shaft away from the hopper; and a transmission rack, which is installed in meshing with the transmission gear and is arranged on the extruder body in a vertical direction.

[0007] Furthermore, the stirring shaft includes: a first stirring shaft and a second stirring shaft that are rotatably connected; the transmission gear includes: a first transmission gear and a second transmission gear, which are respectively installed on the first stirring shaft and the second stirring shaft; the transmission rack includes: a first transmission rack and a second transmission rack, which are respectively meshed and installed with the first transmission gear and the second transmission gear; wherein, in the projection along the axial direction of the stirring shaft, the first transmission rack and the second transmission rack are symmetrically located on both sides of the stirring shaft.

[0008] Furthermore, the extruder also includes a sleeve fixedly arranged on the first stirring shaft, and the second stirring shaft is rotatably sleeved in the sleeve.

[0009] Furthermore, the stirring assembly includes: a mounting block fixedly arranged on the stirring shaft; and a plurality of stirring rods arranged in an array on the mounting block along the circumferential direction of the stirring shaft.

[0010] Furthermore, the extruder also includes: a guide component, which is arranged on the extruder body; a guide groove, which is vertically opened on the guide component, and the stirring shaft is slidably arranged in the guide groove.

[0011] Furthermore, the extruder also includes a bearing, the inner ring of the bearing is arranged on the stirring shaft, and the outer ring of the bearing is slidably arranged in the guide groove.

[0012] The beneficial effects of the utility model are as follows: in the utility model, the hopper can be driven to make reciprocating lifting motion in the vertical direction through the telescopic component, and can drive the hopper to shake back and forth in the vertical direction, so as to shake out the granular hot melt adhesive raw material in the hopper and prevent the hot melt adhesive raw material from accumulating in the hopper; in the process of the hopper making reciprocating lifting motion in the vertical direction, it will also drive the transmission gear to make linear reciprocating motion along the transmission rack, and the transmission gear will rotate around its own central axis to drive the stirring shaft and the stirring assembly to rotate, so as to stir the hot melt adhesive raw material at the junction of the large opening section and the small opening section in the hopper and prevent the hot melt adhesive raw material from being blocked. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the overall installation of the extruder provided in an embodiment of the present application.

[0014] Figure 2 A schematic diagram of the projection of the first transmission gear provided in an embodiment of the present application in the axial direction of the stirring shaft.

[0015] Figure 3 A schematic diagram of the projection of the second transmission gear provided in an embodiment of the present application in the axial direction of the stirring shaft.

[0016] Figure 4 A side view of the installation of the guide component provided in an embodiment of the present application.

[0017] Among them, 1. extruder body; 2. hopper; 3. telescopic component; 41. first stirring shaft; 42. second stirring shaft; 43. mounting block; 44. stirring rod; 45. sleeve; 51. first transmission gear; 52. second transmission gear; 61. first transmission rack; 62. second transmission rack; 7. guide component; 71. guide groove; 72. bearing. DETAILED DESCRIPTION

[0018] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0019] Reference Figure 1 As shown, the embodiment of the present application discloses an extruder for hot melt adhesive production, comprising: an extruder body 1 and a hopper 2, the hopper 2 being slidably arranged in the feed port of the extruder body 1; a telescopic component 3, arranged on the extruder body 1, and used to drive the hopper 2 to perform reciprocating lifting and lowering motion in the vertical direction; a stirring shaft, which passes through the hopper 2 and is rotatably installed on the hopper 2; a stirring assembly, which is installed on the stirring shaft and is located in the hopper 2, and is used to stir the hot melt adhesive raw material at the junction of the large opening section and the small opening section in the hopper 2; a transmission gear, which is arranged at the end of the stirring shaft away from the hopper 2; a transmission rack, which is installed in meshing with the transmission gear and is arranged on the extruder body 1 in the vertical direction.

[0020] In the utility model, the telescopic component 3 can drive the hopper 2 to make reciprocating lifting and lowering motions in the vertical direction, and can drive the hopper 2 to shake back and forth in the vertical direction, so as to shake out the granular hot melt adhesive raw materials in the hopper 2 and prevent the hot melt adhesive raw materials from accumulating in the hopper 2; in the process of the hopper 2 making reciprocating lifting and lowering motions in the vertical direction, it will also drive the transmission gear to make linear reciprocating motions along the transmission rack, and the transmission gear will rotate around its own central axis to drive the stirring shaft and the stirring assembly to rotate, so as to stir the hot melt adhesive raw materials at the junction of the large opening section and the small opening section in the hopper 2 to prevent the hot melt adhesive raw materials from being blocked.

[0021] Specifically, the telescopic component 3 can be a hydraulic rod / electric telescopic rod / cylinder, the main body of the telescopic component 3 is installed on the extruder body 1, and the piston rod of the telescopic component 3 is connected to the hopper 2.

[0022] Reference Figure 2 and Figure 3 As shown, the stirring shaft includes: a first stirring shaft 41 and a second stirring shaft 42 that are rotatably connected; the transmission gear includes: a first transmission gear 51 and a second transmission gear 52, which are respectively installed on the first stirring shaft 41 and the second stirring shaft 42; the transmission rack includes: a first transmission rack 61 and a second transmission rack 62, which are respectively meshed and installed with the first transmission gear 51 and the second transmission gear 52; wherein, in the axial projection along the stirring shaft, the first transmission rack 61 and the second transmission rack 62 are symmetrically located on both sides of the stirring shaft.

[0023] In the utility model, during the reciprocating motion of the hopper 2 along the vertical direction, it can also drive the first transmission gear 51 and the first transmission rack 61 to mesh and transmit, and the second transmission gear 52 to mesh and transmit along the second transmission rack 62; because, in the projection along the axial direction of the stirring shaft, the first transmission rack 61 and the second transmission rack 62 are symmetrically located on both sides of the stirring shaft, and the first transmission rack 61 and the second transmission rack 62 are fixedly arranged on the extruder body 1, during the meshing motion, under the guidance of the first transmission rack 61 and the second transmission rack 62, respectively, the first transmission gear 51 and the second transmission gear 52 can make opposite rotational motions, thereby driving the stirring assembly to stir the hot melt adhesive raw materials in the hopper 2 in different directions, causing relative displacement between different hot melt adhesive raw materials, and further preventing the hot melt adhesive raw materials from accumulating in the hopper 2 to prevent blockage.

[0024] Specifically, the extruder further includes a sleeve 45 fixedly disposed on the first stirring shaft 41 , and the second stirring shaft 42 is rotatably sleeved in the sleeve 45 , so that the first stirring shaft 41 and the second stirring shaft 42 are rotatably connected via the sleeve 45 .

[0025] Specifically, the stirring assembly includes: a mounting block 43, which is fixedly mounted on the stirring shaft; a plurality of stirring rods 44, which are arrayed on the mounting block 43 along the circumferential direction of the stirring shaft; when the stirring shaft rotates, the mounting block 43 can be driven to rotate, thereby driving the stirring rods 44 to stir the hot melt adhesive raw material.

[0026] It is worth mentioning that, during the rotation of the mounting block 43 , the stirring rod 44 can enter into the large opening end and the small opening section of the hopper 2 , thereby ensuring stirring efficiency and preventing blockage.

[0027] Of course, in this embodiment, two groups of stirring components are provided, which are respectively installed on the first stirring shaft 41 and the second stirring shaft 42 .

[0028] Reference Figure 4 As shown, the extruder also includes: a guide component 7, which is arranged on the extruder body 1; a guide groove 71, which is opened on the guide component 7 along the vertical direction, and the stirring shaft is slidably arranged in the guide groove 71. The stirring shaft is guided to reciprocate in the vertical direction through the guide groove 71 to ensure the movement stability of the stirring shaft.

[0029] Among them, the extruder also includes a bearing 72, the inner ring of the bearing 72 is arranged on the stirring shaft, and the outer ring of the bearing 72 can be slidably arranged in the guide groove 71. By setting the bearing 72, the stirring shaft can move linearly in the vertical direction in the guide groove 71 while also being able to rotate in the guide groove 71, thereby reducing the wear of the stirring shaft in the guide groove 71 and effectively improving the service life of the stirring shaft.

[0030] Of course, the stirring shaft can also be rotatably arranged on the hopper 2 through a bearing.

[0031] It should be understood by those skilled in the art that, although preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they are aware of the basic creative concepts. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention. Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the equivalent technology of the claims of the present invention, the present invention is also intended to include these modifications and variations.

Claims

1. An extruder for hot melt adhesive production, characterized in that: include: An extruder body (1) and a hopper (2), wherein the hopper (2) is slidably disposed in a feed port of the extruder body (1); A telescopic component (3) is arranged on the extruder body (1) and is used to drive the hopper (2) to perform reciprocating lifting motion in a vertical direction; A stirring shaft passes through the hopper (2) and is rotatably mounted on the hopper (2); A stirring assembly is mounted on the stirring shaft and is located in the hopper (2), and is used to stir the hot melt adhesive raw material at the junction of the large opening section and the small opening section in the hopper (2); A transmission gear is arranged at an end of the stirring shaft away from the hopper (2); The transmission rack is meshed with the transmission gear and is arranged on the extruder body (1) in a vertical direction.

2. The hot melt adhesive production extruder according to claim 1, characterized in that: The stirring shaft comprises: a first stirring shaft (41) and a second stirring shaft (42) which are rotatably connected; The transmission gear comprises: a first transmission gear (51) and a second transmission gear (52), which are respectively mounted on the first stirring shaft (41) and the second stirring shaft (42); The transmission rack comprises: a first transmission rack (61) and a second transmission rack (62), which are respectively meshed and installed with the first transmission gear (51) and the second transmission gear (52); In the projection along the axial direction of the stirring shaft, the first transmission rack (61) and the second transmission rack (62) are symmetrically located on both sides of the stirring shaft.

3. The hot melt adhesive production extruder according to claim 2, characterized in that: It also includes a sleeve (45) fixedly arranged on the first stirring shaft (41), and the second stirring shaft (42) is rotatably sleeved in the sleeve (45).

4. The hot melt adhesive production extruder according to claim 1, characterized in that: The stirring assembly includes: A mounting block (43) is fixedly mounted on the stirring shaft; A plurality of stirring rods (44) are arranged in an array on the mounting block (43) along the circumferential direction of the stirring shaft.

5. The hot melt adhesive production extruder according to claim 1, characterized in that: Also includes: A guide component (7) is arranged on the extruder body (1); The guide groove (71) is formed on the guide component (7) in a vertical direction, and the stirring shaft is slidably arranged in the guide groove (71).

6. The hot melt adhesive production extruder according to claim 5, characterized in that: It also includes a bearing (72), the inner ring of the bearing (72) is arranged on the stirring shaft, and the outer ring of the bearing (72) is slidably arranged in the guide groove (71).

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