Injection product screw press-fitting equipment

Abstract

Injection product screw press-fitting equipment comprises a positioning seat and a crimping assembly arranged on one side of the positioning seat, the positioning seat comprises a base, a mounting seat, a product containing groove and a through hole, at least one deformation containing groove is formed in the side wall of the product containing groove, and the deformation containing groove is formed in the side wall of the mounting seat. The crimping assembly comprises a frame body, a linear driving air cylinder, a sliding block, a pressing block and four crimping heads. According to the screw press-fitting equipment for the injection molding product, the positioning seat is arranged, so that the injection molding product is conveniently fixed, and the press-fitting assembly is arranged, so that a limiting convex part for clamping the head of the screw can be pressed on the inner wall of the screw mounting hole of the injection molding product.

Description

Technical Field

[0001] The utility model belongs to the technical field of screw pressing, in particular to a screw pressing device for injection molding products. Background Art

[0002] A screw is a common mounting structure used to fix various parts. Some injection molded products are often provided with a screw to facilitate connecting the injection molded product with other components. There is a method of fixing the screw: a screw mounting hole for accommodating the screw head is injection molded on the part to be connected on the injection molded product, and a screw connecting hole is opened at the bottom of the groove to facilitate the passage of the screw. When in use, the screw head is placed in the screw mounting hole and the screw is passed through the screw connecting hole. Then, a limiting protrusion is provided on the inner wall of the opening of the screw mounting hole, so that the limiting protrusion prevents the screw head from escaping from the opening of the screw mounting hole, thereby achieving the requirement of encapsulating the screw head in the screw mounting hole. The advantage of this fixing method is that when the screw is subjected to a small external force, the screw head will not come out. When subjected to a large external force, since the protruding part of the limiting protrusion is short and the limiting protrusion itself has a certain elasticity, the screw head can easily squeeze the limiting protrusion, causing it to produce elastic deformation, thereby facilitating the screw to come out, thereby meeting the needs of replacing and repairing the screw.

[0003] However, existing clamps can only clamp injection molded products. Since this processing method will cause the injection molded products to deform, if the clamp is clamped too tightly, it will leave clamping marks on the injection molded products. If it is clamped too loosely, the injection molded products will easily move during the processing, resulting in deviations in the processing position, affecting the quality of the injection molded products. In addition, if a fixed-shape clamp is used, it will be difficult to remove the injection molded product from the clamp after it is deformed. Utility Model Content

[0004] In view of this, the utility model provides a screw pressing device for injection molding products to solve the above problems.

[0005] A screw pressing device for injection molded products, used for processing and forming a limiting protrusion on the wall of the screw mounting hole of the injection molded product. The screw pressing device for injection molded products includes a positioning seat and a crimping assembly arranged on one side of the positioning seat, the positioning seat includes a base, a mounting seat mounted on the base, a product receiving groove opened on the top of the mounting seat, and a through hole opened at the bottom of the product receiving groove. At least one deformation receiving groove is opened on the side wall of the product receiving groove, and the crimping assembly includes a frame arranged on the top of the base, a linear drive cylinder vertically arranged on the frame, a slider arranged on the driving end of the linear drive cylinder, a pressure block arranged on the slider, and four crimping joints arranged on the end face of the pressure block. The crimping joint includes a base and a guiding bevel arranged at the end of the base. The crimping heads are arranged in pairs, and the crimping heads are symmetrically located at the edge of the hole of the product. The linear drive cylinder drives the slider to approach the injection molded product so that the end of the guide bevel is squeezed with the injection molded product and the constituent materials of the injection molded product are pressed into the inner wall of the screw mounting hole to form a limiting protrusion.

[0006] Furthermore, a mounting notch is provided on the slider, a communication port is provided on one side of the mounting notch, a clamping piece is provided on the top of the pressing block, the clamping piece is clamped in the mounting notch, and the pressing block passes through the communication port.

[0007] Furthermore, the crimping heads are distributed in a rectangular shape.

[0008] Furthermore, a mounting groove is provided on the base, and the mounting seat is mounted in the mounting groove.

[0009] Furthermore, at least one through slot and at least one positioning slot are provided on the side wall of the installation slot, and a positioning portion is provided on the installation seat corresponding to each positioning slot.

[0010] Furthermore, the crimping assembly also includes a guide rail vertically arranged on the top of the base, the extension direction of the guide rail is the same as the driving direction of the linear drive cylinder, and the slider is slidably arranged in the guide rail.

[0011] Furthermore, a plurality of oil storage grooves are provided on the sliding block at a position where the sliding block contacts the guide rail.

[0012] Furthermore, a handle is symmetrically provided at both ends of the base.

[0013] Compared with the prior art, the screw pressing device for injection molded products provided by the present invention facilitates the fixation of injection molded products by setting the positioning seat. By setting the pressing assembly, a limiting convex portion for clamping the screw head can be pressed on the inner wall of the screw mounting hole of the injection molded product. Specifically, the positioning seat includes a base, a mounting seat, and a product receiving groove. The product receiving groove can accommodate the part to be crimped on the injection molded product, thereby avoiding the movement of the injection molded product during the crimping process and causing inaccurate crimping position. The product receiving groove can accommodate the part to be crimped on the injection molded product, thereby avoiding the movement of the injection molded product during the crimping process and causing inaccurate crimping position. At least one deformation accommodating groove is provided on the groove wall, so that deformation space can be reserved after the injection molded product is deformed under pressure, so as to avoid the injection molded product being stuck in the product accommodating groove and being inconvenient to remove after the crimping is completed. The pressing assembly includes a pressing block and four pressing joints arranged on the end face of the pressing block. The pressing joints are paired in pairs, and each pair of the pressing joints abuts against both sides of the screw mounting hole of the injection molded product, so that the injection molded product can be squeezed to form a deformation protrusion symmetrically on the inner wall of the threaded mounting hole, that is, a limiting protrusion, which can limit the screw head from coming out. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural schematic diagram of the screw pressing equipment for injection molding products provided by the utility model.

[0015] Figure 2 for Figure 1 Schematic diagram of the structure of the pressing block of the screw pressing equipment for injection molding products.

[0016] Figure 3 for Figure 1 Schematic diagram of the structure of the mounting base of the screw pressing equipment for injection molding products.

[0017] Figure 4 for Figure 1 A top view of the base of the screw pressing equipment for injection molding products.

[0018] Figure 5 for Figure 1 Schematic diagram of the structure of the slider of the screw pressing equipment for injection molding products.

[0019] Figure 6 for Figure 1 A structural diagram of the slider of the screw pressing equipment for injection molding products from another perspective.

[0020] Figure 7 for Figure 1 A vertical cross-sectional view of the crimping joint of the screw pressing equipment for injection molding products during crimping.

[0021] Figure 8 for Figure 1 A partial top view of an injection molded product using a screw pressing device. DETAILED DESCRIPTION

[0022] The following is a further detailed description of specific embodiments of the present invention. It should be understood that the description of the embodiments of the present invention herein is not intended to limit the scope of protection of the present invention.

[0023] like Figures 1 to 8 , which is a schematic diagram of the structure of the screw press-fitting apparatus for injection molded products provided by the present invention. The screw press-fitting apparatus for injection molded products includes a positioning seat 10 for placing the product, and a crimping assembly 20 spaced apart from the positioning seat 10 and used to press-fit the product. The screw press-fitting apparatus for injection molded products also includes other functional modules, such as a distribution box and controller disposed on one side of the crimping assembly 20. These modules are well known to those skilled in the art and will not be described in detail here.

[0024] It should be noted that if Figure 8 The figure shows a partial top view of an injection molded product 30. This equipment is used to process an injection molded product 30. The surface of the injection molded product 30 is provided with a screw mounting hole 31 and a screw connecting hole 32 disposed at the bottom of the screw mounting hole 31. After processing, a pair of retaining protrusions 33 are formed on the inner wall of the screw mounting hole 31. In actual use, the screw head is retained within the screw mounting hole 31 by the retaining protrusions 33, thereby securing the screw.

[0025] The positioning seat 10 includes a base 11, a mounting seat 12 arranged on the top of the base 11, a product receiving groove 13 opened on the top of the mounting seat 12, and a through hole 14 opened at the bottom of the product receiving groove 13.

[0026] The base 11 includes a base body 111 , a mounting slot 112 provided on the top of the base body 111 , and two handles 113 symmetrically provided at both ends of the base body 111 .

[0027] The base body 111 is rectangular and is used to provide a mounting position. The mounting groove 112 includes at least one through groove 1121 provided on the groove wall of the mounting groove 112, and at least one positioning groove 1122 provided on the groove wall of the mounting groove 112. The through groove 1121 is used to prevent the mounting seat 12 from being pressed by the atmospheric pressure in the mounting groove 112 when the mounting seat 12 is placed in the mounting groove 112, causing the mounting seat 12 to be difficult to fall out of the mounting groove 112, thereby facilitating the removal and installation of the mounting seat 12. The positioning groove 1122 is used to match the corresponding positioning portion 122 described below on the mounting seat 12, so that the mounting seat 12 can be fixed in the direction in which it is placed in the mounting seat 12. The handle seat 113 makes it easy for the operator to lift the entire device and facilitate the transportation of the device.

[0028] The mounting seat 12 is detachably connected to the base 11 and is used to replace the mounting seat 12 with a product receiving groove 13 having a different shape. In this embodiment, there are two mounting seats 12, which are spaced apart from each other to enable simultaneous press-fitting of two injection-molded products. The mounting block 12 includes a mounting block body 121 and at least one positioning portion 122 disposed on the mounting block body 121. The positioning portion 122 has the same shape as the positioning groove 1122, thereby ensuring that the mounting seat 12 is oriented stably within the mounting groove 112. In this embodiment, the cross-sections of the mounting seat 12 and the mounting block 12 are identically rectangular. The through-slots 1121 are three and are each disposed at a right angle of the rectangle. The positioning grooves 1122 are disposed at another right angle of the rectangle, such that the through-slots 1121 and the positioning grooves 1122 each correspond to a right angle of the rectangle.

[0029] The product receiving groove 13 is used to accommodate a portion of the injection molded product, and its shape matches the shape of the portion of the injection molded product. One side of the product receiving groove 13 communicates with the sidewall of the mounting seat 12, allowing the portion of the injection molded product to be inserted into the product receiving groove 13. At least one deformation-accommodating groove 131 is provided at one end of the product receiving groove 13 to accommodate the deformed plastic portion after press-fitting. It should be noted that in this embodiment, there are two deformation-accommodating grooves 131, which are symmetrically arranged. The cross-section of the product receiving groove 13 is rectangular, and the two deformation-accommodating grooves 131 are symmetrically arranged at right angles to the rectangular shape of the product receiving groove 13 and do not communicate with the sidewall of the mounting seat 12. The deformation-accommodating grooves 131 provide space for deformation after the injection molded product is extruded and deformed, concentrating the deformation at the deformation-accommodating grooves 131, thereby preventing the injection molded product from being difficult to remove after being extruded. The through hole 14 extends through the base 11 and the mounting seat 12 to accommodate the screw of the plastic product.

[0030] The crimping assembly 20 includes a frame 21 arranged on the top of the base 11, a linear drive cylinder 22 vertically arranged on the frame 21, a guide rail 23 vertically arranged on the first layer of the frame 21, a slider 24 slidingly arranged on the guide rail 23, a pressing block 25 arranged on the guide rail 23, and four crimping heads 26 arranged at the ends of the pressing block 25.

[0031] The frame 21 is used to provide support for the linear drive cylinder 22. The driving end of the linear drive cylinder 22 is fixedly connected to the guide rail 23, which is used to push the slider 24 along the guide rail 23. The guide rail 23 is removably mounted on the top of the base 11. The base 11 has a slot, and the guide rail 23 is removably mounted within the slot. The guide rail 23 extends perpendicular to the top surface of the base 11. The slider 24 moves along the extension direction of the guide rail 23, thereby approaching or moving away from the top surface of the base 11.

[0032] An oil reservoir 243 is provided on the side of the slider 24 that contacts the guide rail 23, allowing the slider 24 to slide freely on the guide rail 23. The oil reservoir 243 is wavy in shape to store more lubricating oil. A mounting notch 241 is provided on the front of the slider 24, and a connecting port 242 is provided on one side of the mounting notch 241. A snap-on piece 251 is provided on the top of the pressure block 25. The snap-on piece 251 fits within the mounting notch 241 and allows the pressure block 25 to extend from the connecting port 242, thereby positioning the pressure block 25 on the slider 24. The pressure block 25 is detachably connected to the slider 24 via bolts. The snap-on piece 251 is mounted within the mounting notch 241 in such a way that when the slider 24 moves, the corresponding sidewall of the mounting notch 241 assists in driving the snap-on piece 251. Combined with the bolt structure, the pressure block 25 can stably move synchronously with the slider 24. At the same time, this installation method also facilitates the subsequent replacement of the pressing blocks 25 of different specifications as needed.

[0033] The crimping head 26 is rectangularly arranged on the end face of the pressing block 25, located at the end away from the engaging piece 251. This allows for symmetrical crimping of two pairs of protrusions on a pair of side edges of the injection molded product. The crimping head 26 comprises a base 261 and a guide bevel 262 disposed at the end of the base 261. The top of the guide bevel 262 abuts the top of the product. During the extrusion process, the portion of the product located at the bottom of the guide bevel 262 is squeezed by the guide bevel 262 and extends to the hole in the product, forming a protrusion on the inner wall of the hole.

[0034] The inclined surface of the guiding bevel 262 is in an inwardly concave arc shape, so that it can have a certain gathering effect on the deformed part. The guiding bevels 262 are arranged in pairs, and each pair of the guiding bevels 262 can form a stack of limiting protrusions. The inclined surfaces of each pair of the guiding bevels 262 are arranged relative to each other, so that the deformed injection molding material can be guided to bend along the guiding bevel 262, so that it protrudes from the inner wall of the threaded mounting hole. The schematic diagram of the guiding bevel 262 pressing the limiting protrusion is shown in FIG. Figure 7 As shown, Figure 7 It is a vertical cross-sectional view during the press-fitting process, at which time the limiting protrusion is being press-fitted and formed.

[0035] Compared with the prior art, the screw pressing device for injection molded products provided by the present invention facilitates the fixation of the injection molded products by setting the positioning seat 10, and by setting the pressing assembly 20, a limiting convex portion for clamping the screw head can be pressed on the inner wall of the screw mounting hole of the injection molded product. Specifically, the positioning seat 10 includes a base 11, a mounting seat 12, and a product receiving groove 13. The product receiving groove 13 can accommodate the part to be crimped on the injection molded product, thereby avoiding the movement of the injection molded product during the crimping process and causing inaccurate crimping position. The product receiving groove 13 is provided with a plurality of holes 11, 12 and 13 for holding the product. At least one deformation accommodating groove 131 is provided on the groove wall of 3, so that deformation space can be reserved after the injection molded product is deformed by pressure, so as to avoid the injection molded product being stuck in the product accommodating groove 13 and being inconvenient to remove after the crimping is completed. The press-fitting assembly 20 includes a pressing block 25 and four pressing joints 26 arranged on the end face of the pressing block 25. The pressing joints 26 are paired in pairs, and each pair of the pressing joints 26 abuts against both sides of the screw mounting hole of the injection molded product, so that the injection molded product can be squeezed to form a deformation protrusion symmetrically on the inner wall of the threaded mounting hole, that is, a limiting protrusion, thereby limiting the screw head from coming out.

[0036] The above are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent replacements or improvements within the spirit of the present invention are included in the scope of the claims of the present invention.

Claims

1. A screw press-fitting device for injection molded products, used for processing and forming a limiting convex portion on the wall of the screw mounting hole of the injection molded product, characterized in that: The screw pressing equipment for injection molding products includes a positioning seat and a crimping assembly arranged on one side of the positioning seat, the positioning seat includes a base, a mounting seat installed on the base, a product accommodating groove opened on the top of the mounting seat, and a through hole opened at the bottom of the product accommodating groove, and at least one deformation accommodating groove is opened on the side wall of the product accommodating groove, the crimping assembly includes a frame arranged on the top of the base, a linear drive cylinder vertically arranged on the frame, a slider arranged on the driving end of the linear drive cylinder, a pressure block arranged on the slider, and four crimping joints arranged on the end faces of the pressure blocks, the crimping joints include a base and a guide bevel arranged at the end of the base, the crimping joints are paired in pairs, and the crimping joints are symmetrically located at the edge of the hole of the product, and the linear drive cylinder drives the slider to approach the injection molded product so that the end of the guide bevel is squeezed with the injection molded product and the constituent materials of the injection molded product are pressed into the inner wall of the screw mounting hole to form a limiting protrusion.

2. The screw pressing device for injection molded products according to claim 1, characterized in that: The slide block is provided with a mounting notch, a communication port is provided on one side of the mounting notch, a clamping piece is provided on the top of the pressing block, the clamping piece is clamped in the mounting notch, and the pressing block passes through the communication port.

3. The screw pressing device for injection molded products according to claim 1, characterized in that: The crimping joints are distributed in a rectangular shape.

4. The screw pressing device for injection molded products according to claim 1, characterized in that: A mounting groove is provided on the base, and the mounting seat is clamped in the mounting groove.

5. The screw pressing device for injection molded products according to claim 4, characterized in that: At least one through slot and at least one positioning slot are formed on the side wall of the installation slot, and a positioning portion is provided on the installation seat corresponding to each positioning slot.

6. The screw pressing device for injection molded products according to claim 1, characterized in that: The crimping assembly further includes a guide rail vertically arranged on the top of the base, the extension direction of the guide rail is the same as the driving direction of the linear drive cylinder, and the slider is slidably arranged in the guide rail.

7. The screw pressing device for injection molded products according to claim 6, characterized in that: A plurality of oil storage grooves are provided on the position of the sliding block in contact with the guide rail.

8. The screw pressing device for injection molded products according to claim 1, characterized in that: A handle is symmetrically provided at both ends of the base.

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