Extruder for TPR upper-connected injection molding and leather bonding products

Abstract

The utility model discloses an extruder for TPR upper-connected injection molding and leather bonding products. The extruder comprises a guide rail; an electric heating feeding pipe capable of being adjusted in a sliding mode is installed on the guide rail, a detachable conical head is arranged at the end of the electric heating feeding pipe, heat conduction cavities are formed in the electric heating feeding pipe and the detachable conical head, and electric heating wires are arranged in the heat conduction cavities; a screw rod is arranged in the electric heating feeding pipe; according to the extruder for the TPR upper-connected injection molding and leather bonding product, overflowing of a molten TPR material in the continuous inserting and pulling process of an injection molding head of the injection molding machine can be effectively reduced, meanwhile, the extruder body is very convenient to clean when not used, and the injection molding efficiency can be effectively improved; after the granular TPR material enters the electric heating feeding pipe, the screw rod pushes the raw material to move towards the detachable conical head, the synchronous electric heating wire heats the raw material to enable the raw material to be molten, and finally the raw material is extruded from the detachable conical head.

Description

Technical Field

[0001] The present application relates to the technical field of TPR injection molding, and in particular to an extruder for TPR upper injection molding and bonding leather products. Background Art

[0002] TPR (thermoplastic elastomer) upper injection-bonded leather products refer to products made by bonding TPR materials with leather materials through thermoplastic elastomer injection molding. This manufacturing method is usually used to produce soles, hems and other parts in leather products such as shoes and bags.

[0003] When in use, the product sole, hemming, etc. need to be fixed on the mold respectively, and the mold moves to the injection molding station along with the feeding mechanism; during injection molding, the thermoplastic elastomer (TPR) material is heated to a molten state by the injection molding machine, and then the end of the injection molding machine is inserted into the mold receiving nozzle, and then the molten thermoplastic elastomer is injected into the mold to form the desired shape with the mold, and the leather material is also placed in the corresponding position in the mold. Before the TPR material is completely solidified, the leather material is bonded to its surface, and the adhesion and flexibility of the TPR material are used to make it tightly combined with the leather.

[0004] After the injection molding is completed, the injection head of the injection molding machine is pulled out, and when the new mold receiving nozzle moves to the injection head, the above injection action is repeated. The products manufactured by this process have good elasticity and wear resistance, and also have good bonding effect, which can meet the appearance and function requirements of products such as shoes and bags.

[0005] However, since the injection head of the injection molding machine needs to be repeatedly plugged in and out, the molten TPR material remaining in the injection head will flow out during the plugging and unplugging process, and the outflowing raw material will contaminate the workbench. At the same time, the TPR material that sticks to the outer surface of the injection head after solidification will also affect the smooth progress of injection molding. Summary of the invention

[0006] The present application provides an extruder for TPR continuous injection molding and bonding leather products, which can effectively reduce the overflow of molten TPR material from the injection molding head of the injection molding machine during continuous plugging and unplugging. At the same time, the extruder body is very convenient to clean when not in use, which can effectively improve the injection molding efficiency and effectively solve the problems in the background technology.

[0007] To achieve the above-mentioned purpose, the present application provides the following technical solutions: an extruder for TPR joint-jointed injection molding and bonding leather products, comprising a guide rail; a slidably adjustable electric heating feed pipe is installed on the guide rail, a detachable conical head is provided at the end of the electric heating feed pipe, a heat-conducting cavity is provided inside the electric heating feed pipe and the detachable conical head, an electric heating wire is provided inside the heat-conducting cavity; a spiral rod is provided inside the electric heating feed pipe.

[0008] The inner end of the detachable conical head is provided with a conical gradual discharge port, and the inside of the conical gradual discharge port is connected with a conical plug via a spring device.

[0009] Preferably, a slider is slidably connected to the guide rail, an electrically controlled telescopic rod is installed on the guide rail, and a telescopic end of the electrically controlled telescopic rod is connected to the outer side surface of the slider.

[0010] Preferably, the slider is connected to the outer shell of the electric heating feeding tube via a support frame installed on its upper surface.

[0011] Preferably, the outer surfaces of the electrically heated feeding tube and the detachable conical head are both provided with a heat-insulating layer.

[0012] Preferably, the detachable conical head is fixed to the end of the electric heating feeding pipe by bolts.

[0013] Preferably, a feed pipe is installed on the outer side of the detachable conical head, and the feed pipe is connected to an external silo through a hose.

[0014] Preferably, the spring device comprises a spring sheet, an inner conical sleeve is provided inside the detachable conical head, the end of the inner conical sleeve is connected to one end of the spring sheet through spokes, and the other end of the spring sheet is connected to the conical plug through a connecting rod.

[0015] Preferably, a flange is installed at the end of the electric heating feeding pipe, a stepper motor is installed on the flange, and the output shaft of the stepper motor passes through the flange and is connected to the end of the screw rod.

[0016] Preferably, the outer side of the flange is provided with at least one handle.

[0017] Preferably, a ejector pin matching the conical plug is installed in the receiving nozzle of the receiving mold.

[0018] Compared with the prior art, the beneficial effects of this application are:

[0019] 1. This extruder used for TPR joint injection molding and bonding leather products can effectively reduce the overflow of molten TPR material from the injection molding head of the injection molding machine during continuous plugging and unplugging. At the same time, the extruder body is very convenient to clean when not in use, which can effectively improve the injection molding efficiency;

[0020] 2. After the granular TPR material enters the electric heating feeding tube, the spiral rod pushes the raw material toward the detachable conical head, and the synchronous electric heating wire heats the raw material to make it molten, and finally extrudes it from the detachable conical head; when the detachable conical head does not discharge material, the spring device presses the conical plug tightly against the conical gradual discharge port, thereby preventing the molten raw material from overflowing. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of this application;

[0022] Figure 2 This is a partial cross-sectional view of the main view of this application;

[0023] Figure 3 This is a top view of this application;

[0024] Figure 4 This is a cross-sectional view of the injection head in working condition.

[0025] In the figure: 1 guide rail, 2 stepper motor, 3 feed pipe, 4 electric heating feed pipe, 5 detachable conical head, 6 support frame, 7 slider, 8 electric control telescopic rod, 9 spiral rod, 10 electric heating wire, 11 spoke, 12 conical plug, 13 connecting rod, 14 spring sheet, 15 inner conical sleeve, 16 handle, 17 flange. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0027] In the description of this application, if the orientation description is involved, for example, the orientation or position relationship indicated by "upper", "lower", "front", "back", "left", "right", etc. is based on the attached Figure 2 The orientation or position relationship shown is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation of the present application. When a feature is referred to as being "set", "fixed", or "connected" to another feature, it can be directly set, fixed, or connected to the other feature, or it can be indirectly set, fixed, or connected to the other feature.

[0028] See also Figure 1-4 The present application provides the following technical solutions: an extruder for TPR leather products with continuous injection molding, comprising a guide rail 1; a slidably adjustable electric heating feed pipe 4 is installed on the guide rail 1, a detachable conical head 5 is provided at the end of the electric heating feed pipe 4, a heat conduction cavity is provided inside the electric heating feed pipe 4 and the detachable conical head 5, an electric heating wire 10 is provided inside the heat conduction cavity; a spiral rod 9 is provided inside the electric heating feed pipe 4.

[0029] Specifically, after the granular TPR material enters the electric heating feeding tube 4 , the spiral rod 9 pushes the raw material toward the detachable conical head 5 , and the synchronous electric heating wire 10 heats the raw material to make it molten, and finally extrudes it from the detachable conical head 5 .

[0030] The inner end of the detachable conical head 5 is provided with a conical gradual discharge port, and the interior of the conical gradual discharge port is connected with a conical plug 12 via a spring device.

[0031] Specifically, when the detachable conical head 5 does not discharge material, the spring device presses the conical plug 12 tightly against the conical gradual discharge port, thereby preventing the molten raw material from overflowing.

[0032] Furthermore, a slider 7 is slidably connected to the guide rail 1 , and an electrically controlled telescopic rod 8 is installed on the guide rail 1 , and a telescopic end of the electrically controlled telescopic rod 8 is connected to the outer side surface of the slider 7 .

[0033] Specifically, the electrically controlled telescopic rod 8 drives the slider 7 to move left and right, thereby realizing the plugging and unplugging action of the detachable conical head 5 .

[0034] Furthermore, the slider 7 is connected to the outer shell of the electric heating feeding pipe 4 via a support frame 6 installed on its upper surface.

[0035] Specifically, the slider 7 drives the electric heating feeding pipe 4 to move.

[0036] Furthermore, the outer surfaces of the electrically heated feeding pipe 4 and the detachable conical head 5 are both provided with a heat-insulating layer.

[0037] Specifically, the provision of a thermal insulation layer can reduce energy loss.

[0038] Furthermore, the detachable conical head 5 is fixed to the end of the electric heating feeding pipe 4 by bolts.

[0039] Specifically, the bolt connection facilitates the rapid disassembly of the detachable conical head 5 .

[0040] Furthermore, a feed pipe 3 is installed on the outer side of the electric heating feeding pipe 4, and the feed pipe 3 is connected to an external silo through a hose.

[0041] Specifically, the feed pipe 3 feeds the granular raw material into the interior of the electrically heated feed pipe 4 .

[0042] Furthermore, the spring device includes a spring sheet 14, an inner conical sleeve 15 is provided inside the detachable conical head 5, the end of the inner conical sleeve 15 is connected to one end of the spring sheet 14 through the spoke 11, and the other end of the spring sheet 14 is connected to the conical plug 12 through the connecting rod 13.

[0043] Specifically, the conical plug 12 compresses the spring sheet 14 after being pressed, and the feeding channel of the detachable conical head 5 is opened. After the ejector pin is removed, the spring sheet 14 pushes the conical plug 12 to return to its original position, thereby preventing the molten raw material from overflowing.

[0044] Furthermore, a flange 17 is installed at the end of the electric heating feeding pipe 4 , and a stepper motor 2 is installed on the flange 17 . The output shaft of the stepper motor 2 passes through the flange 17 and is connected to the end of the screw rod 9 .

[0045] Specifically, the stepping motor 2 can drive the screw rod 9 to rotate, thereby completing the feeding action.

[0046] Furthermore, at least one handle 16 is provided on the outer side of the flange 17 .

[0047] Specifically, the provision of the handle 16 facilitates the disassembly of the flange 17 .

[0048] Furthermore, an ejector pin matching the conical plug 12 is installed in the receiving nozzle of the receiving mold.

[0049] Specifically, the ejector pin is used to control the opening and closing of the feeding channel of the detachable conical head 5 .

[0050] When in use: the granular material enters the electric heating feeding pipe 4 through the feeding pipe 3, the stepping motor 2 drives the screw rod 9 to rotate, the screw rod 9 pushes the granular material to move toward the detachable conical head 5, and the synchronous electric heating wire 10 heats the granular material, and the granular material is heated to become a molten state.

[0051] When the mold rotates to the receiving position, the electrically controlled telescopic rod 8 extends to insert the end of the detachable conical head 5 into the receiving nozzle. At this time, the ejector installed inside the mold pushes open the conical plug 12, and then the molten material enters the mold cavity.

[0052] After the injection molding is completed, the electrically controlled telescopic rod 8 contracts to pull out the detachable conical head 5, and then the spring sheet 14 pushes the conical plug 12 to return to its original position to complete the plugging of the discharge port, thereby preventing the molten material from overflowing.

[0053] Although the embodiments of the present application have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An extruder for TPR upper injection molding and bonding leather products, characterized by: The invention comprises a guide rail (1); a slidably adjustable electric heating feed pipe (4) is mounted on the guide rail (1); a detachable conical head (5) is provided at the end of the electric heating feed pipe (4); a heat conduction cavity is provided inside the electric heating feed pipe (4) and the detachable conical head (5); an electric heating wire (10) is provided inside the heat conduction cavity; a spiral rod (9) is provided inside the electric heating feed pipe (4); The inner end of the detachable conical head (5) is provided with a conical gradual discharge port, and the interior of the conical gradual discharge port is connected to a conical plug (12) via a spring device.

2. The extruder for TPR upper injection molding and bonding leather products according to claim 1, characterized in that: A slider (7) is slidably connected to the guide rail (1), an electrically controlled telescopic rod (8) is mounted on the guide rail (1), and a telescopic end of the electrically controlled telescopic rod (8) is connected to the outer side surface of the slider (7).

3. The extruder for TPR upper injection molding and bonding leather products according to claim 2, characterized in that: The slider (7) is connected to the outer shell of the electric heating feeding pipe (4) via a support frame (6) mounted on its upper surface.

4. The extruder for TPR upper injection molding and bonding leather products according to claim 1, characterized in that: The outer surfaces of the electrically heated feeding pipe (4) and the detachable conical head (5) are both provided with a heat-insulating layer.

5. The extruder for TPR upper injection molding and bonding leather products according to claim 4, characterized in that: The detachable conical head (5) is fixed to the end of the electric heating feeding pipe (4) by means of bolts.

6. The extruder for TPR upper injection molding and bonding leather products according to claim 4, characterized in that: A feed pipe (3) is installed on the outer side surface of the detachable conical head (5), and the feed pipe (3) is connected to an external silo via a hose.

7. The extruder for TPR upper injection molding and bonding leather products according to claim 1, characterized in that: The spring device comprises a spring sheet (14), an inner conical sleeve (15) is arranged inside the detachable conical head (5), the end of the inner conical sleeve (15) is connected to one end of the spring sheet (14) through a spoke (11), and the other end of the spring sheet (14) is connected to the conical plug (12) through a connecting rod (13).

8. The extruder for TPR upper injection molding and bonding leather products according to claim 1, characterized in that: A flange (17) is installed at the end of the electric heating feeding pipe (4), a stepping motor (2) is installed on the flange (17), and an output shaft of the stepping motor (2) passes through the flange (17) and is connected to the end of the screw rod (9).

9. The extruder for TPR upper injection molding and bonding leather products according to claim 8, characterized in that: The outer side surface of the flange (17) is provided with at least one handle (16).

10. The extruder for TPR upper injection molding and bonding leather products according to claim 1, characterized in that: An ejector pin matching the conical plug (12) is installed in the receiving nozzle of the receiving mold.

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