Combined main rubber frame for frame box and manufacturing method of combined main rubber frame

Abstract

The invention discloses a combined main rubber frame for a frame box and a manufacturing method thereof.The combined main rubber frame comprises a rubber frame body, a sewing rubber strip and a zipper, the rubber frame body comprises a plurality of edge strips and a plurality of corner fittings, the adjacent edge strips are connected through the corner fittings, a mounting groove is formed in the top of the rubber frame body, and the lower end of the sewing rubber strip is inserted from the top end of the mounting groove and fixed; in daily use, by adopting the technical scheme, the rubber frame main body is split into the ring shape which is formed by mutually splicing and assembling the plurality of edge strips and the corner fittings, and the edge strips with the same length as each edge of the box shell are cut out in the manufacturing process and then are mutually connected through the plurality of corner fittings, so that the manufacturing process is simplified, and the manufacturing cost is reduced. The length of the edge strip can be adjusted according to the sizes of different box shells, so that molds corresponding to various box shells with different sizes do not need to be arranged, and the manufacturing cost is saved.

Description

Technical Field

[0001] The invention relates to the field of bag materials and manufacturing processes, and in particular to a combined main rubber frame for a frame box and a manufacturing method thereof. Background Art

[0002] A suitcase, also known as a travel suitcase or a trolley case, is a box that is used to store items when traveling. It is one type of luggage. Usually, a suitcase is used to store clothes, personal care products, and souvenirs needed for the journey.

[0003] The current box body is basically composed of two box shells, with a main rubber frame set on the opening side, a lining installed inside the main rubber frame, and a zipper installed on the top through a sewn rubber strip. The main rubber frame is an integrated long strip that is bent into a shape that adapts to the opening side of the box shell by heat bending, and is connected to the box shell by ultrasonic welding or gluing after being sleeved on the opening side of the box shell. A T-shaped groove is set on the top of the main rubber frame, and a zipper is installed on the upper end of the sewn rubber strip by sewing, hot pressing, gluing, etc. The lower end of the sewn rubber strip is T-shaped. When installing, the sewn rubber strip needs to be aligned with one end of the T-shaped groove on the main rubber frame, and then the sewn rubber strip is pulled and installed into the T-shaped groove of the sewn rubber strip. Such a structure has the following defects:

[0004] When the bonding surface of the box shell or the main rubber strip is not clean enough, the adhesive is incorrectly selected, the amount of glue applied is insufficient or unevenly distributed, the bonding effect between the box shell and the main rubber strip will be affected. Improper welding parameter settings, poor material compatibility or unreasonable welding surface design will affect the firmness of the ultrasonic welding between the box shell and the main rubber strip.

[0005] In addition, since the main rubber frame is relatively long, it takes a long time to install the sewing rubber strip by pulling it out, which affects the processing efficiency.

[0006] The current manufacturing process of the main rubber frame generally includes the following steps: adding the prepared raw materials and additives to an internal mixer or an open mixer in a certain proportion for mixing, extruding the mixed rubber material through an extruder to obtain a tubular blank, cutting the tubular blank of an appropriate length, heating it, and then bending it multiple times on a mold corresponding to the size of the box shell to be matched, and obtaining a main rubber strip adapted to the shape of the box frame after cooling, and then gluing or ultrasonic welding the joints at both ends of the tubular blank to fix it, and finally installing it on the box shell by gluing or ultrasonic welding. The defects of this manufacturing process are as follows:

[0007] Different shapes of molds need to be configured according to frame boxes of different sizes, which has high manufacturing costs, and the fixing methods of viscose or ultrasonic welding are not firm enough. Summary of the invention

[0008] The present invention aims to solve one of the technical problems existing in the prior art.

[0009] The present application provides a combined main rubber frame for a frame box, including a rubber frame body, a sewn rubber strip, a zipper and a lining. The rubber frame body includes a plurality of side strips and a plurality of corner pieces. Adjacent side strips are connected by the corner pieces. An installation groove is provided on the top of the rubber frame body. The lower end of the sewn rubber strip is inserted and fixed from the top of the installation groove.

[0010] It also includes a plurality of fasteners, which are used to fix the rubber frame body on the box shell and to reinforce the connection between the sewn rubber strip and the rubber frame body.

[0011] A shielding strip is detachably mounted on the outside of the rubber frame body to shield the outer end of the fastener.

[0012] The corner piece comprises a connecting head, and two ends of the connecting head are plug-connected and installed with adjacent side strips through a plug-in structure.

[0013] The inner bottom of each side strip and each corner piece is provided with a rib strip 1, and adjacent rib strips 1 are connected by a positioning piece with a positioning groove.

[0014] The positioning piece is U-shaped with a positioning groove formed inside. The inner bottom of each side strip and each corner piece is also provided with rib two. The upper end of the positioning piece is inserted between rib two and rib one, and the upper end of the positioning piece extends between rib two and rib one, and the lower end abuts against the bottom surface of the lower end of the corner piece and the side strip.

[0015] It also includes a card slot arranged on the inner side of the bottom of the rubber frame body, and a frame strip is arranged around the lining, and the frame strip can be detachably installed in the card slot through a disassembly assembly component.

[0016] The invention also includes a buckle, a rib and a stopper, wherein the rib is fixedly arranged at the bottom of the rubber frame body, the buckle is engaged with the rib, the stopper is inserted in the slot and is fixedly connected to the buckle, the buckle includes a lower plate and a vertical plate connected to each other, one end of the lower plate is fixedly connected to the stopper, a slot is formed between the vertical plate, the lower plate and the stopper, a buckle extending into the slot is arranged at the upper end of the vertical plate, the rib is inserted into the slot and is fixed by the engagement of the block and the buckle

[0017] At the same time, a method for manufacturing a main plastic frame is disclosed, which is applicable to the aforementioned combined main plastic frame for a frame box, and comprises the following steps:

[0018] S1, extrude the edge strips through an extruder;

[0019] S2, manufacturing the corner piece by an injection molding machine and an injection mold;

[0020] S3. Cut off the long strips of the side strips to obtain multiple side strips that are adapted to the length of the four sides of the box frame, take an appropriate number of corner pieces, and fix the two ends of each corner piece and the end of each side strip to each other to form a main plastic frame.

[0021] In step S3, each corner piece and each side strip are fixed to each other by plugging, gluing or ultrasonic welding.

[0022] The beneficial effects of the present invention are as follows:

[0023] 1. The sewing rubber strip of the present application only needs to place the lower end in the installation groove and then press it to install it, and it can be reinforced with fasteners. Compared with the prior art, the efficiency of installing the sewing rubber strip of the present application is improved.

[0024] 2. Install it on the box shell through multiple fasteners to improve the connection firmness between the rubber frame body and the box shell.

[0025] 3. The curvature of corners of box shells of different sizes is consistent, and the only difference is the side length. The corner pieces of the present application are equivalent to standard pieces, which are commonly used for the corners of the same box shells of different sizes. The corner pieces are manufactured in large quantities by injection molding, while the side strips are uniformly extruded by an extruder and then cut to adapt to the length according to demand. Compared with the prior art, there is no need to configure corresponding hot bending molds according to box shells of different sizes. Only injection molds for corner piece injection molding need to be configured. The standard parts of corner pieces can be mass-produced in conjunction with the existing injection molding machine, thereby improving the manufacturing efficiency of the rubber frame main body. During assembly, multiple corner pieces and side strips are interconnected to form the rubber frame main body, thereby reducing manufacturing costs and improving economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a three-dimensional diagram of the installation state of the combined main rubber frame and the box shell used for the frame box in the embodiment of the present application;

[0027] Figure 2 A three-dimensional diagram of a main plastic frame for a frame box assembly in an embodiment of the present application;

[0028] Figure 3 This is a cross-sectional view of the position of the positioning member in the embodiment of the present application;

[0029] Figure 4 It is a partial three-dimensional diagram of a combined main rubber frame used for a frame box in an embodiment of the present application;

[0030] Figure 5 It is a partial three-dimensional diagram of the combined main rubber frame used for the frame box in the embodiment of the present application;

[0031] Figure 6 It is a partial three-dimensional diagram of the combined main rubber frame used for the frame box in the embodiment of the present application;

[0032] Figure 7 This is a three-dimensional diagram of a corner piece in an embodiment of the present application;

[0033] Figure 8 This is a cross-sectional view of the position of the fastener in the embodiment of the present application;

[0034] Fig. 9 This is an assembly structure diagram when the fastener is a code nail in the embodiment of the present application. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0036] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0037] The combined main rubber frame for the frame box provided in the embodiment of the present application is described in detail below through specific embodiments and application scenarios in conjunction with the accompanying drawings.

[0038] Embodiment 1:

[0039] like Figures 1 to 9 As shown, in this embodiment, a combined main rubber frame for a frame box is disclosed, which includes a rubber frame body 1, a sewn rubber strip 2, a zipper 3 and a lining 4. The rubber frame body 1 includes a plurality of side strips 101 and a plurality of corner pieces 102. Adjacent side strips 101 are connected by the corner pieces 102. A mounting groove 20 is provided on the top of the rubber frame body 1, and the lower end of the sewn rubber strip 2 is inserted and fixed from the top of the mounting groove 20.

[0040] Using the above-mentioned combined main rubber frame, such as Figure 1 As shown, a plurality of side strips 101 and a plurality of corner pieces 102 are combined to form a plastic frame body 1 adapted to the contour of the open end of the box shell 100, as shown in FIG. Figure 3 and Figure 4 As shown, a mounting groove 20 is provided on the top of the rubber frame body 1, and the sewing rubber strip 2 is inserted into the mounting groove 20, and then the rubber frame body 1 is installed at the open end of the box shell 100, with the outer side abutting against the inner side wall of the open end of the box shell 100. The sewing rubber strip 2 of the present application can be installed quickly, thereby improving production efficiency.

[0041] Embodiment 2:

[0042] The difference from Example 1 is that, in addition to the structural features of the aforementioned embodiments, the specific embodiment of the present application also includes a number of fasteners 5 for fixing the rubber frame body 1 on the box shell 100 and reinforcing the connection between the sewn rubber strip 2 and the rubber frame body 1. In the specific embodiment of the present invention, a shielding strip 9 is detachably installed on the outer side of the rubber frame body 1 for shielding the outer end of the fastener 5.

[0043] like Figure 3 As shown, after the rubber frame body 1 with the sewn rubber strip 2 is installed on the open side of the box shell 100, the box shell 100 and the rubber frame body 1 are fixed by using fasteners 5. Specifically, the fasteners 5 are inserted into the edge strips 101 of the box shell 100 and the rubber frame body 1, and are inserted through the sewn rubber strip 2, so that the box shell 100 and the rubber frame body 1 are firmly connected, and the sewn rubber strip 2 is reinforced, thereby improving the connection firmness between the box shell 100 and the rubber frame body 1 and the connection firmness between the rubber frame body 1 and the sewn rubber strip 2, and the installation is simple.

[0044] The shielding strip 9 is sleeved on the outside of the rubber frame body 1 and fixed by gluing or ultrasonic welding. The lower part extends downward to shield the fastener 5, thereby improving the aesthetics of the outer side of the box shell 100.

[0045] Embodiment 3:

[0046] The difference from Example 2 is that, in addition to the structural features of the aforementioned embodiments, in the specific embodiments of the present application, the fasteners 5 are selected from screws, bolts, blind rivets or staples, and the fasteners 5 fix the box shell 100 and the rubber frame body 1 while passing through the sewing strips 2, and can reinforce the sewing strips 2 and the rubber frame body 1 at the same time.

[0047] If the fasteners 5 are self-tapping screws, there is no need to drill holes in the box shell 100 and the edge strip 101. The box shell 100, the edge strip 101 and the sewing tape 2 can be fixed to each other by directly tapping the fasteners 5 into the box shell 100 and the edge strip 101.

[0048] If the fastener 5 is a bolt or a blind rivet, holes must be drilled in advance on the box shell 100, the side strip 101 and the sewing tape 2, and then bolts are screwed into the holes or blind rivets are inserted and pulled out to fix the box shell 100, the side strip 101 and the sewing tape 2 to each other.

[0049] like Fig. 9 As shown, when the fastener 5 is a code nail, its sharp ends are passed through the box shell 100 and the edge strip 101 in turn, and then the two ends are bent to make the fastener 5 as a whole into a square shape, thereby fixing the box shell 100, the edge strip 101 and the sewing tape 2 to each other.

[0050] Embodiment 4:

[0051] The difference from Example 3 is that, in addition to the structural features of the aforementioned embodiments, in the specific embodiment of the present application, a shielding strip 9 is detachably installed on the outer side of the rubber frame body 1 to shield the outer end of the fastener 5.

[0052] In a specific embodiment of the present invention, a mounting groove 20 with an upward opening is provided on the rubber frame body 1, a strip edge 10 is provided on the outer side, an outer ring groove 11 is provided on the outer circle of the strip edge 10, a pair of clamping strips 12 are provided in the mounting groove 10 and the outer ring groove 11, and a closing groove 13 is formed between the pair of clamping strips 12, a connecting strip 14 is provided on the inner wall of the shielding strip 9, and a V-shaped elastic plate 15 is provided at the lower end of the sewn rubber strip 2 and the end of the connecting strip 14 away from the shielding strip 9, and the width of the elastic plate 15 is greater than the width of the closing groove 13.

[0053] Due to the above structure, Figure 3 and Figure 4 As shown, after each corner piece 102 and each side strip 101 form the rubber frame body 1, the sewn rubber strip 2 and the connecting strip 14 on the shielding strip 9 are respectively inserted into the installation groove 20 and the outer ring groove 11, each elastic plate 15 will be elastically deformed when passing through each closing groove 13, and when passing through the closing groove 13 and entering the inner end of the installation groove 20 or the outer ring groove 11, it will restore its original length under the action of its own elastic force and be stuck under the corresponding pair of card strips 12, that is, the bottom of the installation groove 20 and the outer ring groove 11, as shown in FIG. Figure 1 and Figure 3 As shown, the rubber frame body 1 installed with the seam tape 2 and the shielding strip 9 is placed in the opening of the box shell 100, so that the edge of the box shell 100 is pressed against the bottom surface of the strip edge 10, and the inner wall is pressed against the outer wall of each corner piece 102 and each side strip 101, and then the fastener 5 is installed to fix the side strip 101 to the side wall of the box shell 100. At the same time, the fastener 5 passes through the seam tape 2 to reinforce the connection between the seam tape 2 and the side strip 101.

[0054] The bottom of the sewing rubber strip 2 in the prior art is T-shaped, and a T-shaped groove is provided on the existing rubber frame body. The sewing rubber strip 2 is inserted into the existing rubber frame body 1 by pulling. The sewing rubber strip 2 of the present application only needs to place the lower end in the installation groove 20 and then press to install. Compared with the prior art, the efficiency of installing the sewing rubber strip 2 in the present application is improved, and there is no need to pull the rubber frame body 1 and the sewing rubber strip 2 for assembling, thereby improving the assembly accuracy.

[0055] Since the elastic plate 15 is V-shaped, its two ends are inclined toward the upper end of the corresponding sewing rubber strip 2 or the direction of the shielding strip 9. This shape allows the elastic plate 15 to pass through the closing groove 13 between the pair of clamping strips 12 and move toward the inner end of the mounting groove 20 or the outer ring groove 11. Only a small amount of deformation is required to make the width of the two ends of the elastic plate 15 the same as the width of the closing groove 13, thereby reducing the resistance of the elastic plate 15 to enter the mounting groove 20 or the bottom end of the outer ring groove 11 through the closing groove 13. However, when the sewing rubber strip 2 or the elastic plate 15 is pulled outward from the mounting groove 20 or the outer ring groove 11, the elastic plate 15 needs to be deformed into a straight line first and then the two ends are deformed and bent toward the bottom end of the mounting groove 20 or the outer ring groove 11, so that the width of the two ends of the elastic plate 15 is equal to the width of the closing groove 13 between the pair of clamping strips 12, thereby increasing the resistance of the elastic plate 15 when it is separated from the mounting groove 20 or the outer ring groove 11. In short, it is convenient to install and not easy to fall off.

[0056] After the seam strip 2 is inserted into the installation groove 20 , a pair of second clamping strips 16 are in contact with both sides of the overlapping connection position of the zipper 3 and the seam strip 2 , thereby improving the stability of the seam strip 2 in the installation groove 20 .

[0057] The top end of the seam tape 2 and the zipper 3 are fixed to each other by means of stitching, ultrasonic welding or hot pressing.

[0058] Embodiment 5:

[0059] The difference from Example 4 is that, in addition to including the structural features of the aforementioned embodiments, in the specific embodiments of the present application, as Figure 4 and 5 As shown, the corner piece 102 includes a connector 121 , and two ends of the connector 121 are plug-connected and installed with the adjacent edge strips 101 through a plug-in structure.

[0060] In a specific embodiment of the present application, the plug-in structure includes an insert block 122 or a socket 123, and the end of the side strip 101 is provided with a socket 123 or an insert block 122. When the insert block 122 and the socket 123 are plugged into each other, the connector 121 and the side strip 101 can be fixed to each other. In this way, multiple corner pieces 102 and multiple side strips 101 are connected end to end to form a rubber frame body 1. The outer contour of the rubber frame body 1 is the same as the contour of the inner wall of the open side of the box shell 100. After the rubber frame body 1 is inserted into the inside of the open side of the box shell 100, the fastener 5 is used to fix the rubber frame body 1.

[0061] By adopting the above structure, the corner pieces 102 of the present application are equivalent to standard parts, which are commonly used for the corners of box shells 100 of different sizes. The corner pieces 102 are manufactured in large quantities by mold injection molding, while the side strips 101 are uniformly extruded by an extruder, and then a plurality of side strips 101 of suitable lengths are cut according to needs (generally 2 strips, two long and two short), and then the corner pieces 102 corresponding to the number of corners of the box shell 100 (generally 4) are taken, and the corner pieces 102 and the side strips 101 are connected end to end to each other through the insertion of the plug block 122 and the socket 123 to form a rubber frame body 1, and the rubber frame body 1 is sleeved on the inner side of the open end of the box shell 100, and the sewn rubber strip 2 is installed in the rubber frame body 1, and then a plurality of fasteners 5 are taken from the outside of the box shell 100 to the inside and driven into each side strip 101, and the box shell 100 is fixed to the box shell 100, and the fixation of the sewn rubber strip 2 and the rubber frame body 1 is reinforced at the same time.

[0062] like Figure 5 As shown, when the plug block 122 is set at the end of the connector 121, the socket 123 is set at the end of the side strip 101. Since the side strip 101 is continuously extruded, the socket 123 is formed inside since the extrusion. When the side strip 101 is cut off, there is no need to perform other processing on the side strip 101. The socket 123 is directly exposed to the outside and is directly used for plugging and mating with the plug block 122.

[0063] It should be noted that the corner piece 102 and the side strip 101 of the present application are connected to each other by plugging the plug block 122 and the socket 123. The plug block 122 and the socket 123 have a certain overlap range. Therefore, even if the length of the cut side strip 101 is slightly shorter, it does not affect the connection firmness of the corner piece 102 and the side strip 101. If the side strip 101 of the prior art is cut too short, the interface cannot be connected after hot bending. Compared with the prior art, the fault tolerance rate during installation of the present application is improved, and when the rubber frame main body 1 composed of a plurality of side strips 101 and corner pieces 102 is placed in the open end of the box shell 100, the outer sides of each corner piece 102 and each side strip 101 abut against the surrounding inner walls of the box shell 100, and the corners and side strips 101 cannot move outward, ensuring that the plug block 122 will not be separated from the socket 123, and the main structure of the rubber frame main body 1 is stable.

[0064] Embodiment 6:

[0065] The difference from the fifth embodiment is that the plug block 122 can also be arranged at the end of the edge strip 101, and in this case, the socket 123 is arranged at the end of the plug block 122 (not shown in the drawings of the specification).

[0066] Due to the adoption of the above-mentioned structure, when assembling the rubber frame main body 1, since the side strip 101 is continuously extruded, there is no socket 123 inside the side strip 101 since it is extruded. When cutting the side strip 101, it is necessary to cut its two ends to obtain the plug block 122, which is then plugged with the socket 123 provided on the connector 121 to form the rubber frame main body 1. The rubber frame main body 1 is then inserted into the open side of the box shell 100, and bolts are used to penetrate the box shell 100 and the rubber frame main body 1 from the outside to the inside to complete the mutual fixation of the rubber frame main body 1 and the box shell 100.

[0067] Embodiment 7:

[0068] The difference from Example 5 is that, in addition to the structural features of the aforementioned embodiments, in the specific embodiments of the present application, a rib 82 is provided on the inner bottom of each side strip 101 and each corner piece 102, and adjacent ribs 82 are connected by a positioning piece 19 with a positioning groove 18.

[0069] In the specific embodiments of the present application, Figure 6 and 7 As shown, the positioning member 19 is U-shaped and has a positioning groove 18 formed inside. The inner bottom of each side strip 101 and each corner piece 102 is also provided with a rib 17. The upper end of the positioning member 19 is inserted between the rib 17 and the rib 1 82. The upper end of the positioning member 19 extends between the rib 17 and the rib 1 82, and the lower end abuts against the bottom surface of the lower end of the corner piece 102 and the side strip 101.

[0070] Due to the adoption of the above-mentioned structure, after each corner piece 102 and each side strip 101 are connected to each other, a number of positioning pieces 19 are installed between adjacent corner pieces 102 and side strips 101, the rib 17 is plugged into the positioning groove 18, and the top end of the positioning piece 19 and the groove formed between the rib 17 and the rib 1 82 are plugged into each other, forming a handle-shaped interference fit structure, which locates the connection position of each corner piece 102 and each side strip 101 to ensure that the joints between each side strip 101 and each corner piece 102 are smooth.

[0071] Embodiment 8:

[0072] The difference from Example 7 lies in that, in addition to the structural features of the aforementioned embodiments, the specific embodiments of the present application also include a card slot 6 arranged on the inner side of the bottom of the rubber frame body 1, and a frame strip 7 is arranged around the lining 4. The frame strip 7 can be detachably installed in the card slot 6 through a disassembly assembly 8. The disassembly assembly 8 includes a fastener 81, a rib 82 and a block 83. The rib 82 is fixed at the bottom of the rubber frame body 1, the fastener 81 is clamped with the rib 82, and the block 83 is inserted in the card slot 6 and fixed with the fastener 81.

[0073] Due to the adoption of the above structure, when removing the lining 4, open the lining zipper at the bottom of the lining 4, put your hand between the lining 4 and the box shell 100, remove the fasteners 81 one by one, so that each block 83 is disengaged from the slot 6, and the restriction on the frame strip 7 is released, so that the frame strip 7 can be disengaged from the slot 6 and taken out of the box shell 100 together with the lining 4.

[0074] When installing the lining 4, the frame strip 7 is inserted into the slot 6, and then each stopper 83 is inserted into the slot 6 and fixed to each other through the buckle 81 and the rib 82, so that the frame strip 7 is located between the inner end of the slot 6 and the stopper 83, and the peripheral wall of the lining 4 extends out from the gap between the stopper 83 and the slot 6. The gap is smaller than the cross-sectional diameter of the frame strip 7, ensuring that the frame strip 7 cannot move away from the rubber frame body 1 when the buckle 81 is not removed, and then the lining zipper at the bottom of the lining 4 is closed to complete the installation of the lining 4.

[0075] The lining 4 is made of flexible material (chemical fiber, natural fiber, artificial leather, synthetic leather, non-woven fabric, flannel, etc.), and the frame strips 7 are fixed to the edges of the lining 4 by sewing or gluing.

[0076] like Figure 2 As shown, the rubber frame body 1 adapts to the shape of the opening side of the box shell 100 during actual assembly. Taking the present application as an example, the assembly effect is a quadrilateral, the rib 82 and the slot 6 are in a quadrilateral shape, and the frame bar 7 is also in a quadrilateral shape. When installing or removing the frame bar 7, the rubber frame body 1 can be elastically deformed so that the frame bar 7 can enter and exit the slot 6, and is pre-fixed when entering the slot 6. The user can clip the fasteners 81 onto the rib 82 one by one, which is convenient for operation during actual use.

[0077] Embodiment 9:

[0078] The difference from Example 8 is that Figure 3 As shown, the fastener 81 includes a lower plate 811 and a vertical plate 812 that are interconnected, one end of the lower plate 811 is fixedly connected to the stopper 83, a slot 813 is formed between the vertical plate 812, the lower plate 811 and the stopper 83, a fastener 814 is provided at the upper end of the vertical plate 812 and extends into the slot 813, the rib 82 is inserted into the slot 813 and is fixed by the engagement of the block 815 and the fastener 814, the fastener 81 also includes a pressing plate 816 fixedly provided at the other end of the vertical plate 812, the fastener 814 and the block 815 are both triangular, the fastener 814 is inclined toward the side wall of the rubber frame body 1, and the block 815 is inclined away from the side wall of the rubber frame body 1.

[0079] Due to the adoption of the above structure, during installation, the buckle 81 is used to clip the frame strip 7 into the clip slot 6, and then the slot 813 of the buckle 81 is aligned with the rib 82, and then the buckle 81 is pressed toward the rubber frame body 1. The inclined surface of the buckle 814 cooperates with the inclined surface on the block 815 to make the vertical plate 812 bend and deform outward from the slot 813 until the buckle 814 moves between the block 815 and the rubber frame body 1. The vertical plate 812 recovers under the action of its own elastic force, so that the buckle 814 and the block 815 are buckled with each other, and the installation of the lining 4 is completed.

[0080] When removing the fastener 81, the distal end of the pressing plate 816 is pushed away from the rubber frame body 1 to deform the vertical plate 812, and the fastener 814 is disengaged from the block 815, thereby releasing the fixation between the slot 813 and the rib 1 82, so that the fastener 81 can move together with the block 83 away from the rubber frame body 1 until the rubber frame body 1 is disengaged from the slot 813, so that the frame strip 7 and the lining 4 can be separated from the box shell 100.

[0081] Embodiment 10:

[0082] The present application also discloses a method for manufacturing a main plastic frame, which is applicable to the aforementioned combined main plastic frame for a frame box, and comprises the following steps:

[0083] S1, extruding a long strip of edge strip 101 through an extruder;

[0084] S2, manufacturing the corner piece 102 by an injection molding machine and an injection mold;

[0085] S3, cutting off the long strips of the side strips 101 to obtain multiple side strips 101 of the lengths adapted to the four sides of the box frame, taking an adapted number of corner pieces 102, fixing the two ends of each corner piece 102 to the ends of each side strip 101 to form a main plastic frame.

[0086] In step S3, each corner piece 102 and each side strip 101 are fixed to each other by plugging, gluing or ultrasonic welding.

[0087] In this embodiment of the present application, due to the adoption of the above-mentioned steps, the mixed rubber material is put into the extruder hopper, heated and pressurized by the screw to make it into a molten state, and extruded by the extruder to form a long strip of edge strip 101 of a predetermined shape, which is quickly cooled to a fixed shape by a water tank or an air cooling device, and then the long strip of edge strip 101 is pulled by a traction machine at a uniform speed to be wound up. When it needs to be cut, the long strip of edge strip 101 is released and cut off.

[0088] The movable mold and the fixed mold of the injection mold are closed, and the clamping mechanism applies high pressure to prevent the mold from expanding. The screw injection molding machine injects the molten plastic into the mold cavity at high pressure and speed, and continuously applies pressure to compensate for the cooling shrinkage of the plastic and avoid surface depression. The temperature of the plastic part is lowered by the mold temperature control system (such as water cooling) until it solidifies. The mold is opened, and the ejection system pushes the plastic part out, and at the same time, the gate waste is cut off to obtain the corner piece 102.

[0089] The connection between each side strip 101 and the corresponding corner piece 102 can be carried out in the following ways:

[0090] 1. Each side strip 101 and the end surface of the adjacent corner piece 102 are plugged into each other through a plug-in structure to form a plastic frame body 1, which is then installed in the box shell 100.

[0091] 2. Each side strip 101 and the end surface of the adjacent corner piece 102 are glued together to form a glue frame body 1, which is then installed in the box shell 100.

[0092] 3. Each side strip 101 is fitted with the end surface of the adjacent corner piece 102 and then ultrasonically welded to form the rubber frame body 1, which is then installed in the box shell 100.

[0093] In the existing process, in order to achieve the bending and shaping of the main rubber strip, it is necessary to configure a hot bending equipment with high precision and capable of multi-stage bending. In the existing process, the equipment is dedicated to the bending operation of the main rubber strip, but the purchase of the equipment requires hundreds of thousands of dollars. The solution adopted in this application does not need to configure corresponding hot bending molds according to different sizes of box shells 100. It only needs to use the original injection molding machine and injection mold in the factory to manufacture the corner piece 101. With the original injection molding machine, the standard part of the corner piece 102 can be mass-produced, thereby improving the manufacturing efficiency of the rubber frame main body 1. During assembly, multiple corner pieces 102 and side strips 101 are interconnected to form the rubber frame main body 1, thereby reducing manufacturing costs and improving economic benefits.

[0094] It should be noted that in this text, the terms "including", "comprising" or any other variants thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising one..." does not exclude the presence of additional identical elements in the process, method, article or device comprising that element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the reverse order according to the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0095] The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all of them fall within the protection scope of the present application.

Claims

1. A combined main plastic frame for a frame box, comprising a plastic frame body, a sewn plastic strip, a zipper and a lining, characterized in that: The rubber frame body includes a plurality of side strips and a plurality of corner pieces, and adjacent side strips are connected by the corner pieces. A mounting groove is provided on the top of the rubber frame body, and the lower end of the sewn rubber strip is inserted into and fixed from the top of the mounting groove.

2. The combined main plastic frame for a frame box according to claim 1, characterized in that: It also includes a plurality of fasteners for fixing the rubber frame body on the box shell and reinforcing the connection between the sewn rubber strip and the rubber frame body.

3. The combined main plastic frame for a frame box according to claim 2, characterized in that: A shielding strip is detachably mounted on the outside of the rubber frame body to shield the outer end of the fastener.

4. A combined main rubber frame for a frame box according to any one of claims 1 to 3, characterized in that: The corner piece comprises a connecting head, and two ends of the connecting head are plug-connected and installed with adjacent side strips through a plug-in structure.

5. A combined main rubber frame for a frame box according to any one of claims 1 to 3, characterized in that: The inner bottom of each side strip and each corner piece is provided with a rib strip 1, and adjacent rib strips 1 are connected by a positioning piece with a positioning groove.

6. The combined main plastic frame for a frame box according to claim 5, characterized in that: The positioning piece is U-shaped and has a positioning groove formed inside. The inner bottom of each side strip and each corner piece is also provided with rib two. The upper end of the positioning piece is inserted between rib two and rib one, and the upper end of the positioning piece extends between rib two and rib one, and the lower end abuts against the bottom surface of the lower end of the corner piece and the side strip.

7. The combined main plastic frame for a frame box according to claim 1, characterized in that: It also includes a card slot arranged on the inner side of the bottom of the rubber frame body, and a frame strip is arranged around the lining, and the frame strip can be detachably installed in the card slot through a disassembly assembly component.

8. The combined main plastic frame for a frame box according to claim 7, characterized in that: It also includes a fastener, a rib and a block, the rib is fixedly arranged at the bottom of the rubber frame body, the fastener is engaged with the rib, the block is inserted in the slot and fixedly connected to the fastener, the fastener includes a lower plate and a vertical plate connected to each other, one end of the lower plate is fixedly connected to the block, a slot is formed between the vertical plate, the lower plate and the block, a buckle extending into the slot is provided at the upper end of the vertical plate, the rib is inserted into the slot and fixed by the engagement of the block and the buckle.

9. A method for manufacturing a main plastic frame, applicable to the combined main plastic frame for a frame box according to claim 1, characterized in that: The following steps are involved: S1, extrude the edge strips through an extruder; S2, manufacturing the corner piece by an injection molding machine and an injection mold; S3. Cut off the long strips of the side strips to obtain multiple side strips that are adapted to the length of the four sides of the box frame, take an appropriate number of corner pieces, and fix the two ends of each corner piece and the end of each side strip to each other to form a main plastic frame.

10. The method for manufacturing the main rubber frame according to claim 9, characterized in that: In step S3, each corner piece and each side strip are fixed to each other by plugging, gluing or ultrasonic welding.

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