Frame, processing box and frame mold

Abstract

The present invention provides a frame, a processing box and a frame mold. The frame includes an integrally injection-molded shell and a bracket. The bracket is located at one longitudinal end of the shell and is provided with a support protrusion protruding toward the inner side of the shell along the longitudinal direction of the shell; the bracket includes a surrounding portion surrounding the support protrusion, and the surrounding portion is provided as a solid structure without process holes; the shell includes an outer peripheral portion opposite to the support protrusion in the transverse and vertical directions, and the outer peripheral portion is provided as a solid structure without process holes. The processing box includes the above-mentioned frame. The frame mold is used for integrally injection-molding the frame, and includes an upper mold, a lower mold and an inclined top mold. The inclined top mold has a sliding rod portion and a die head portion. The molding surface of the die head portion is used to mold at least a portion of the outer peripheral surface of the support protrusion; the sliding rod portion moves relative to the lower mold along an inclined direction having an angle with the vertical direction. The present invention improves the structural strength while achieving integral injection molding of the frame.

Description

Technical Field

[0001] The present invention relates to the technical field of printing consumables, and in particular to a frame body, a processing box and a frame body mold of the frame body that are integrally injection-molded without sacrificing structural strength. Background Art

[0002] The processing cartridge for printing consumables includes a frame body that serves as the main body of the waste toner bin. The frame body comprises a shell and a bracket for supporting the photosensitive element. The bracket has a cylindrical support protrusion that extends longitudinally along the shell and projects into the interior of the shell. Furthermore, the bracket is provided with an isolation hole that passes through the bracket longitudinally and is used to insert a spacer.

[0003] If the housing and the bracket are integrally injection molded, the number of parts can be reduced. However, part of the frame structure is vertically opposite to the support protrusion, which hinders the demoulding of the mold for molding the support protrusion.

[0004] The Chinese invention patent application with publication number CN108333900A discloses a waste powder bin and a processing box, in which the frame of the waste powder bin is provided with a through hole for demolding at a circumferential position on the bracket close to the support protrusion. Through these process through holes opened in different directions, the mold can extend into the interior of the frame along the radial or axial direction of the support protrusion. During injection molding, the outer peripheral contour of the support protrusion is formed by these extended molds. After the injection molding is completed, the mold is also pulled out through these process through holes, so that the bracket can be injection molded as a whole with the shell.

[0005] Although the existing bracket with process through holes solves the problem of hindering demolding and realizes the integral injection molding of the shell and the bracket, one or more process holes are set near the supporting protrusion of the bracket for demolding, which will inevitably lead to a decrease in the integrity and strength of the thin-walled shell-shaped frame structure. When the photosensitive part is installed on the bracket and rotates, the bracket will produce inappropriate shaking, which will lead to a decrease in the imaging quality of the processing box. Summary of the Invention

[0006] A first object of the present invention is to provide a frame with improved structural integrity and strength.

[0007] A second object of the present invention is to provide a process cartridge including the frame of the present invention.

[0008] A third object of the present invention is to provide a frame mold for molding the frame of the present invention.

[0009] The frame provided by the first purpose of the present invention includes an integrally injection-molded shell and a bracket, the bracket is located at one longitudinal end of the shell, and is provided with a support protrusion protruding toward the inner side of the shell along the longitudinal direction of the shell; the bracket includes a surrounding portion surrounding the support protrusion, and the surrounding portion is set as a solid structure without process holes; the shell includes an outer peripheral portion opposite to the support protrusion in the horizontal and vertical directions, and the outer peripheral portion is set as a solid structure without process holes.

[0010] It can be seen from the above scheme that, on the basis of being able to solve the problem of integrally forming the shell and the bracket in the same way as the prior art CN108333900A, the frame of the present invention can creatively eliminate the process holes on the surrounding part and the process holes on the peripheral part compared to the prior art, so that the strength of the bracket is improved and the bracket is effectively prevented from causing inappropriate shaking under the action of external force. It should be noted that the process hole referred to in the present invention refers to a support protrusion on the formed bracket that protrudes toward the inner side of the shell. It must be set for demolding during the integral molding injection molding process to allow the mold to be ejected from the process hole. The process hole does not have any functional role when the frame is involved in work, such as the functional role of installing spare parts.

[0011] A further solution is that an isolation hole is further provided on the bracket, and the surrounding portion is located in the annular area between the supporting protrusion and the isolation hole.

[0012] As can be seen above, the isolation hole is a functional hole for installing an isolation element. For a frame body that requires the installation of an isolation element, the annular area serves as the area on the bracket near the support protrusion. If a process hole is provided, the strength of the bracket's main wall will be further weakened. After the support protrusion is mated with the photosensitive element, the process hole will also affect the operating accuracy of the photosensitive element. To this end, the present invention provides a solid structure without process holes in the annular area. While ensuring the connection strength between the bracket and the housing, it also maximizes the connection strength between the support protrusion and the bracket's main wall.

[0013] A further solution is that the shell has an inner wall body, the bracket includes a main wall body, and an avoidance groove is formed between the inner wall body, the main wall body and the outer periphery. When viewed from the horizontal direction, the notch of the avoidance groove is opposite to the supporting protrusion.

[0014] As can be seen from the above, the avoidance groove is provided and its notch is aligned with the support protrusion in the transverse direction, so that the mold for forming the support protrusion can be released from the notch of the avoidance groove when the frame is integrally molded by injection molding.

[0015] A further solution is that the inner side of the main wall body includes a first surface and a second surface; viewed from the longitudinal direction, the second surface is closer to the avoidance groove than the first surface, and the second surface is the inner surface of the avoidance groove; in the longitudinal direction, there is a distance between the first surface and the second surface, and the second surface is at the other longitudinal end of the shell relative to the first surface, a part of the support protrusion protrudes from the first surface, and the other part of the support protrusion protrudes from the second surface.

[0016] As can be seen from the above, the inner side of the bracket of the prior art originally includes a first surface and a second surface that are spaced apart in the longitudinal direction, and the support protrusion protrudes as a whole on the first surface that is closer to the inner side of the shell in the longitudinal direction. The above-mentioned longitudinal plate that has not been removed is also connected to the first surface, so that the inner wall of the frame is opposite to the first surface of the bracket and the distance between the two is relatively close. Even if the above-mentioned longitudinal plate is removed to form a notch and a avoidance groove, the avoidance groove and its notch are also narrow, which limits the size of the mold that can be released from the notch, causing problems with the strength of the mold. To this end, the present invention adjusts the position of the step where the first surface and the second surface are connected to the support protrusion, so that the inner wall of the frame is opposite to the second surface of the bracket, and the avoidance groove formed between the two is relatively widened, thereby improving the strength of the mold.

[0017] A further solution is to further include an avoidance space. From a longitudinal perspective, the avoidance space and the avoidance groove are respectively arranged on both sides of the supporting protrusion; from a transverse perspective, the supporting protrusion is located in the avoidance space.

[0018] As can be seen from the above, the prior art provides a third through hole, i.e., a process hole, which is larger and passes through the shell in the vertical direction for demoulding, at a position communicating with the outer periphery of the present invention. The third through hole is provided for a portion of the lower mold to form a support protrusion from the inner side of the frame, and is used for vertical demoulding of the portion. If the third through hole is directly provided as a notch without blocking the support protrusion, the lower semicircular portion of the support protrusion can be formed by the lower mold without hindering demoulding. However, the presence of the larger notch makes the connection strength between the shell and the bracket seriously insufficient. Therefore, the prior art does not use a notch but a third through hole. In this way, the frame is also provided with a reinforcing connection portion connected between the shell and the bracket on the lateral side of the third through hole. However, the reinforced connection obstructs the demolding of the support protrusion both laterally and vertically. Therefore, the conventional frame also requires a first through-hole on the main wall of the bracket, extending longitudinally through the outer periphery of the support protrusion. The portion of the support protrusion that is blocked from demolding by the reinforced connection and cannot be formed is then formed by a mold that extends longitudinally from the first through-hole into the inner side of the frame. The mold is also demolded longitudinally through the first through-hole. The present invention removes the reinforced connection on the conventional frame to form an escape space. A portion of the outer periphery of the support protrusion can be moved into place through the escape space through the second mold, thereby further optimizing and simplifying the mold structure, while also optimizing the frame structure and reducing product material usage.

[0019] The second object of the present invention is to provide a processing box including a frame, which is the above-mentioned frame.

[0020] The frame mold provided by the third purpose of the present invention is used for one-piece injection molding of the frame, including an upper mold and a lower mold, the upper mold is demolded vertically relative to the lower mold; the frame is the above-mentioned frame; it also includes a slanted top mold, the slanted top mold has a sliding rod part and a mold head part, the molding surface of the mold head part is used to mold at least a part of the outer peripheral surface of the support protrusion; the sliding rod part moves relative to the lower mold along an inclined direction having an angle with the vertical.

[0021] As can be seen from the above scheme, the frame mold of the present invention is improved to ensure that the structure near the support protrusion can maintain a solid structure without process holes as much as possible. Through the setting of the inclined top mold, at least a part of the outer peripheral surface of the support protrusion can be formed from the inner side of the frame through the inclined top mold. After the longitudinal mold and the upper mold are demoulded, the inclined top mold pushes the frame upward and gradually separates from the lower mold. In the process, the mold head of the inclined top mold moves longitudinally and / or laterally relative to the support protrusion to separate from the support protrusion to achieve demoulding. The frame mold of the present invention forms the support protrusion on the inner side of the frame through the inclined top mold and demoulds the inclined top mold on the inner side of the frame, so that the support of the frame and the position near the support no longer need to open process holes for demoulding, forming a solid structure without process holes, thereby improving the structural strength.

[0022] A further solution is that the angle between the sliding rod portion and the vertical direction ranges from 8 degrees to 15 degrees.

[0023] As can be seen from the above, the moving direction of the inclined top mold needs to be considered: first, whether the inclined top mold can smoothly and fluently move upwards as the frame separates from the lower mold; second, how to minimize the impact of the addition of the inclined top mold on the size change of the frame mold. Among them, if the inclined top mold has a large angle relative to the vertical, although the demoulding can be completed as soon as possible, the sliding smoothness will be reduced, and the plane size of the frame mold also needs to be adjusted; if the inclined top mold has a too small angle relative to the vertical, although the inclined top mold can move smoothly during the process of the frame separating upwards from the lower mold, the lifting stroke of the inclined top mold for demoulding will be increased due to the small horizontal movement of the inclined top mold. In summary, the angle between the sliding rod part of the inclined top mold and the vertical is in the range of 8 degrees to 15 degrees, which not only meets the requirements of smooth sliding during demoulding and the inclined top mold completely leaving the support protrusion when the frame separates from the lower mold, but also has the advantage of not requiring changes to the plane size of the frame mold.

[0024] A further solution is to further include a second mold; the center line of the sliding rod part is in a plane perpendicular to the longitudinal direction, the molding surface of the mold head is used to mold the first part of the outer peripheral surface of the support protrusion, and the molding surface of the second mold is used to mold the second part of the outer peripheral surface of the support protrusion.

[0025] It can be seen from the above that when the center line of the sliding rod part is set in a plane perpendicular to the longitudinal direction and the outer peripheral surface of the supporting protrusion cannot be completely formed by the inclined top mold alone, the inclined top mold can be used to complete the forming of a part of the outer peripheral surface of the supporting protrusion, and the remaining position of the outer peripheral surface of the supporting protrusion can be completed by the second mold, or by the structure of the second mold and other molds and smoothly demolded.

[0026] Another further solution is that the center line of the slide rod portion is in a plane perpendicular to the transverse direction, and the forming surface of the die head is used to form the outer peripheral surface of the supporting protrusion.

[0027] As can be seen from the above, when the center line of the slide rod is set in a plane perpendicular to the horizontal plane, the outer peripheral surface of the support protrusion can be formed by an annular forming surface on the inclined top mold. This setting can better ensure the accuracy of the outer peripheral surface of the support protrusion. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a structural diagram of the first embodiment of the frame of the present invention.

[0029] Figure 2 This is a partial enlarged view of the first embodiment of the frame of the present invention.

[0030] Figure 3 This is a partially enlarged view of the first embodiment of the frame of the present invention from another perspective.

[0031] Figure 4 This is a front view of the bracket end of the first embodiment of the frame of the present invention.

[0032] Figure 5 This is a three-dimensional diagram of the first embodiment of the frame mold of the present invention.

[0033] Figure 6 for Figure 5 Structural breakdown diagram.

[0034] Figure 7 This is a structural exploded view of the lower mold and the frame of the first embodiment of the frame mold of the present invention.

[0035] Figure 8 for Figure 7 A partial enlarged view in .

[0036] Figure 9 This is a structural diagram of the inclined top mold, the second mold and the third mold in the first embodiment of the frame mold of the present invention.

[0037] Figure 10 Schematic diagram of the coordination relationship among the inclined top mold, the second mold and the third mold during the forming of the support protrusion in the first embodiment of the frame mold of the present invention.

[0038] Figure 11This is a schematic diagram of the demoulding principle of the inclined top mold of the first embodiment of the frame mold of the present invention.

[0039] Figure 12 This is a partial enlarged view of the bracket end of the second embodiment of the frame of the present invention.

[0040] Figure 13 This is a structural diagram of the second embodiment of the frame mold of the present invention.

[0041] Figure 14 This is a structural diagram of the inclined top mold in the second embodiment of the frame mold of the present invention.

[0042] Figure 15 This is a structural diagram of the cooperation between the inclined top mold and the bracket in the second embodiment of the frame mold of the present invention.

[0043] Figure 16 This is a schematic diagram of the demoulding principle of the inclined top mold of the second embodiment of the frame mold of the present invention. DETAILED DESCRIPTION

[0044] For the purpose of clearer explanation, most of the drawings establish a spatial rectangular coordinate system with a unified direction of the frame placement position in the mold. In the coordinate system, the x-axis direction is the longitudinal direction of the frame, the y-axis direction is the transverse direction of the frame, and the z-axis direction is the vertical direction of the frame. In the drawings related to the frame mold, the demolding of the upper and lower molds is separated vertically, the demolding of the two longitudinal molds is separated longitudinally, and the demolding of the two transverse molds is separated transversely, and XYZ is a right-handed coordinate system.

[0045] First embodiment of the frame, first embodiment of the process cartridge, and first embodiment of the frame mold

[0046] See also Figure 1 The frame 1 of this embodiment includes an integrally injection-molded housing 10 and a bracket 11. The bracket 11 is located at the right end of the housing 1 in the longitudinal direction and includes a main wall 12 connected to the housing 10. The main wall 12 extends along a plane perpendicular to the x-axis. In the longitudinal direction, the inner side of the main wall 12 faces the inner side of the housing 10. The inner side of the main wall 12 is the side facing the positive x-axis in the figure. The support protrusion 13 extends from the inner side of the main wall 12 in the positive x-axis direction. Figure 7 The shell 10 of the frame 1 of this embodiment includes an outer surface plane 1001 extending in the longitudinal direction, and the normal direction of the outer surface plane 1001 is the vertical direction.

[0047] Combine Figure 3 In this embodiment, the support protrusion 13 is a cylindrical structure with a notch 133. The inner periphery of the support protrusion 13 is provided with a mounting hole 130 passing through along the x-axis direction. The support protrusion 13 is used to support the photosensitive component, which is a photosensitive drum assembly. The mounting hole 130 is used to install the end of the photosensitive drum assembly.

[0048] See also Figure 2 An isolation hole 129 is also provided on the main wall 12 of the bracket 11. The isolation hole 129 passes through the inner and outer sides of the main wall 12 along the x-axis direction. The isolation hole 129 is used for allowing the isolation member to extend from the outer side to the inner side of the main wall 12, so that the rod of the isolation member can reach between the photosensitive drum and the charging roller to isolate the two.

[0049] The main purpose of the frame of the present invention is to ensure that the housing 10 and the bracket 11 can be integrally injection molded, while also ensuring that the bracket 11 and the structure around the bracket 11 are solid structures without process holes as much as possible, thereby ensuring that the frame does not sacrifice structural strength due to integral injection molding, thereby affecting imaging quality. Figure 1 and Figure 3 The support protrusion 13 protrudes from the inner side of the main wall 12 of the bracket 11 along the x-axis direction, and the frame 1 includes an outer peripheral portion 1102 opposite to the outer peripheral surface of the support protrusion 13. Figure 3 The dotted hatched area is used to indicate the portion, and the peripheral portion 1102 is configured as a solid structure without process holes.

[0050] See also Figure 1 and Figure 4 The bracket 11 includes a surrounding portion 1101 located between the inner circumference of the support protrusion 13 and the near point of the isolation hole 129, and the surrounding portion 1101 is shown Figure 4 The dotted hatching indicates the annular portion, and the surrounding portion 1101 is a solid structure without process holes. The inner circumference of the support protrusion 13 is the inner wall of the mounting hole 130, and the near point of the isolation hole 129 is the position on the isolation hole 129 closest to the center of the mounting hole 130.

[0051] See also Figures 1 to 3 , Figure 1 Parting line 100 is shown as the parting surface between the upper and lower molds, passing through the centerline of support protrusion 13. Support protrusion 13 is an inwardly convex structure, and its outer periphery 1102 blocks support protrusion 13 from the positive z-axis and positive y-axis directions. Therefore, outer periphery 1102 prevents the mold for support protrusion 13 from being released from the mold along the x-axis or positive y-axis directions.

[0052] For this, see Figure 5 and Figure 6 The present invention designs a frame mold 9 for the molding and demolding of the support protrusion 13. The frame mold 9 in this example is used for injection molding two frames 1 at one time. The two frames 1 are molded in the frame mold 9 in an X-axially opposite shape.

[0053] The frame mold 9 includes a lower mold 91 and an upper mold 92 that are separated and combined with each other along the z-axis direction, and the upper mold 92 is demolded vertically relative to the lower mold 91; the frame mold 9 also includes two longitudinal molds 93 arranged on opposite sides of the x-axis direction, and two transverse molds 94 arranged on opposite sides of the y-axis direction.

[0054] See also Figures 7 to 9 After the two longitudinal molds 93 are demolded away from the frame 1 along the x-axis direction, the two transverse molds 94 are demolded away from the frame 1 along the y-axis direction, and the upper mold 92 is demolded relative to the lower mold 91 along the positive direction of the z-axis, the frame 1 is gradually separated from the lower mold 91 in the process of being lifted upward along the positive direction of the z-axis by the inclined top mold 95, and is also separated laterally from the mold head 952 relative to the inclined top mold 95, that is, the demolding process of the support protrusion 13 relative to the inclined top mold is completed.

[0055] See also Figures 7 to 9 and combined Figure 3 The frame mold 9 also includes a second mold 96 and a third mold 97 . The inclined top mold 95 , the second mold 96 , the third mold 97 and the lower mold 91 jointly complete the molding of the outer peripheral surface of the support protrusion 13 on the inner side of the frame 1 .

[0056] like Figure 3 As shown, the support protrusion 13 includes a first portion 131, a second portion 132, and the remaining portions. In addition, the support protrusion 13 also forms the aforementioned notch 133, wherein the first portion 131 and the second portion 132 are joined along the circumference of the support protrusion 13. A first portion of the outer circumference of the support protrusion 13 on the first portion 131 is formed by an inclined top die 95, a second portion of the outer circumference of the support protrusion 13 on the second portion 132 is formed by a second die 96, and the remaining portions of the outer circumference of the support protrusion 13 on the remaining portions are formed by a third die 97 and the lower die 91. The notch 133 is formed by the third die 97.

[0057] See also Figure 8 and Figure 9The inclined top die 95 comprises a slide portion 953 and a die head 952 connected along the u-axis. The centerline of the slide portion 953 lies within a plane perpendicular to the x-axis. The slide portion 953 slides relative to the lower die 91 along the u-axis. The slide portion 953 is also inserted into the inclined socket of the sliding seat 959 below the lower die 91. Because the slide portion 953 is relatively slender, if the extended middle portion is not supported by a structure, the slide portion 953 may bend and deform, and may not provide sufficient driving force to ensure successful demolding. The extended middle portion of the slide portion 953 is inserted into the sliding seat 959, which not only provides auxiliary support for the slide portion 953 but also further ensures that the slide portion 953 moves more accurately along the inclined direction. The die head 952 is provided with a first molding surface 951 having an inwardly concave arc surface that matches the first portion of the first portion 131 of the outer peripheral surface of the support protrusion 13. Among them, the u-axis direction is the inclined direction of the present invention, and the angle between the u-axis direction and the z-axis direction in the plane perpendicular to the x-axis direction is the first angle a, and the value range of the first angle a is 8 to 15 degrees.

[0058] The second mold 96 is slidably mounted on the lower mold 91 along the y-axis direction via a transverse sliding seat 969 . The second mold 96 is provided with a second molding surface 961 which is a concave arc surface and matches the second portion on the second part 132 of the outer peripheral surface of the support protrusion 13 .

[0059] Look back Figure 2 and Figure 3 In order to ensure that the frame 1 can cooperate with the inclined top mold 95 and the second mold 96, the structure inside the frame 1 is improved.

[0060] In the prior art, the housing originally had an internal structure including an inner wall and a longitudinal plate. However, the longitudinal plate extended to and connected to the inner surface of the main wall of the bracket, and a cavity was formed between the outer wall, inner wall, longitudinal plate, and main wall of the bracket corresponding to the position of the outer peripheral portion 1102. In addition, in the prior art, the inner surface of the main wall was relatively close to the inner wall of the housing.

[0061] In the present invention, the portion of the existing longitudinal plate connected to the main wall 12 is removed to form the longitudinal plate 102 of the present invention, so that an escape groove 1103 is formed between the outer peripheral portion 1102, the inner wall 101 of the housing 10, and the main wall 12. Furthermore, a notch of the escape groove 1103 is formed between the longitudinal plate 102 and the main wall 12. The notch faces the outer peripheral surface of the first portion 131 of the support protrusion 13 along the y-axis direction. That is, when viewed laterally, the notch of the escape groove 1103 faces the support protrusion 13. The escape groove 1103 is used to accommodate the inclined top mold 95 and prevent the inclined top mold 95 from separating from the support protrusion 13 along the y-axis direction.

[0062] Continue to see Figure 3The inner side of the main wall 12 includes a first surface 121 and a second surface 122; the second surface 122 is closer to the avoidance groove 1103 than the first surface 121, and the second surface 122 is part of the inner surface of the avoidance groove 1103. The second surface 122 is formed by a longitudinal surface of the die head 952 of the inclined top die 95.

[0063] There is a distance between the first surface 121 and the second surface 122 in the x-axis direction. The second surface 122 is away from the inner side of the shell 10 relative to the first surface 121. Only the first part 131 of the support protrusion 13 protrudes from the second surface 122, and the second part 132 and the rest of the support protrusion 13 protrude from the first surface 121.

[0064] In the prior art, because the first surface 121 and the inner wall 101 face each other, the narrow gap formed between them is too small to accommodate the inclined top mold 95. The present invention adjusts the step where the first surface 121 and the second surface 122 meet to the support protrusion 13. This allows the inner wall 101 of the frame 1 to face the second surface 122 of the bracket 11, and the avoidance groove 1103 formed between them is wider. Correspondingly, the longitudinal dimension of the inclined top mold 95 is increased, thereby ensuring the strength of the sliding rod portion of the inclined top mold 95.

[0065] Furthermore, the longitudinal dimension of the support protrusion 13 needs to be reduced to ensure that the outer peripheral surface of the first portion of the support protrusion 13 can be completely formed by the inclined top die 95. Specifically, in the x-axis direction, the height of the support protrusion 13 should not exceed the avoidance groove 1103. Based on the first surface 121, the dimension of the support protrusion 13 along the x-axis preferably ranges from 2.5 mm to 3.5 mm. Of course, the dimension of the support protrusion 13 along the x-axis can be smaller or larger as long as the requirements for mating with the rotating member and the avoidance groove 1103 are met.

[0066] Continue to see Figure 2 and Figure 3 The second portion 132 of the support protrusion 13 is opposite to the outer peripheral portion 1102 along the z-axis direction, i.e., vertically. The second portion of the outer peripheral surface of the support protrusion 13 on the second portion 132 is formed from the inner side of the frame body 1 by the second mold 96. The frame body 1 includes an escape space 1104. The escape space 1104 and the escape groove 1103 are respectively provided on opposite sides of the support protrusion 13 in the y-axis direction. When viewed in the x-axis direction, the escape space 1104 and the escape groove 1103 are respectively provided on both sides of the support protrusion 13. When viewed in the y-axis direction, the support protrusion 13 is located within the escape space 1104. In this way, the second portion 132 is exposed to the frame body 1 through the escape space 1104. The escape space 1104 is used to accommodate the second mold 96 and to provide a position for the second mold 96 to be demolded along the y-axis direction.

[0067] In fact, the frame of the prior art is provided with a reinforcing connection portion connected between the shell and the bracket at the same position as the avoidance space 1104. The reason is that the frame of the prior art is provided with a larger third through hole for the injection molding process at the same position as the peripheral portion 1102 of the present invention and at a position opposite to the support protrusion along the z-axis direction. The above-mentioned reinforcing connection portion is provided to reinforce the structure.

[0068] However, the reinforced connection part hinders demolding from the y-axis direction and the z-axis direction. The frame of the prior art has to set a first through hole for the injection molding process that penetrates the main wall along the x-axis direction in the same position of the bracket as the surrounding part 1101 of the present invention. In this way, the third through hole and the first through hole basically cover the semicircular area of ​​the supporting protrusion, and the two larger process holes cause the problem of insufficient strength of the frame.

[0069] However, since the peripheral portion 120 of this embodiment is configured as a solid structure without process holes and can itself ensure the connection strength between the shell 10 and the bracket 11, there is no need to provide a reinforced connection portion in the prior art to compensate for the strength of the third through hole.

[0070] After the above-mentioned reinforced connection portion is removed, an escape space 1104 is formed that can accommodate the second mold 96 and allow the second mold 96 to be demoulded along the y-axis direction.

[0071] See also Figure 3 and Figure 10 The inclined top mold 95 , the second mold 96 , the third mold 97 and the lower mold 91 (not shown in the figure) jointly complete the molding of the outer peripheral surface of the support protrusion 13 on the inner side of the frame body 1 .

[0072] Recombination Figure 11 The demolding process between the inclined top mold 95 and the support protrusion 13 is shown by the change from state diagram a to state diagram b. Below the parting line 100 in the figure is a fixed lower mold 91. As the frame 1 is lifted along the positive direction of the z-axis and gradually separated from the lower mold 91, the inclined top mold 95 translates along the u-axis direction, resulting in a displacement in the y-axis direction. As the inclined top mold 95 rises along the positive direction of the z-axis, it will also gradually move away from the first part 131 along the y-axis, and finally be completely demolded. That is, the first part of the outer peripheral surface of the support protrusion 13 in the first part 131 is formed from the inner side of the frame 1 by the inclined top mold 95. That is, after the upper mold 92 and the longitudinal mold 93 are demolded, as the frame 1 gradually separates from the lower mold 91 vertically upward, the inclined top mold 95 moves laterally relative to the support protrusion 13 and gradually separates from the support protrusion 13.

[0073] In the above process, the avoidance groove 1103 provides the inclined top mold 95 with sufficient avoidance position in the y-axis direction to ensure complete demoulding.

[0074] The present invention forms the support protrusion 13 on the inner side of the frame 1 through the inclined top mold 95 and the second mold 96 and demolds the inclined top mold 95 and the second mold 96 on the inner side of the frame 1, so that the bracket 11 of the frame 1 and the position near the bracket 11 adopt a solid structure without process holes to improve the structural strength.

[0075] The present invention also includes a processing box constructed with the help of the above-mentioned frame 1. The frame 1 serves as the main body of the waste powder bin of the processing box. In addition to the frame 1, the processing box embodiment also includes the remaining components of the existing processing box, such as the powder bin, photosensitive parts and developing parts. The above-mentioned remaining components are all existing technologies. Those skilled in the art can implement them based on existing technologies such as CN108333900A.

[0076] Second embodiment of the frame, second embodiment of the process cartridge, and second embodiment of the frame mold

[0077] See also Figure 12 In this embodiment, an inner surface plane 29 having a connecting hole and a connecting protrusion is provided on the inner side of the shell 20 of the frame 2, and the normal direction of the inner surface plane 29 is the vertical direction.

[0078] Similar to the previous embodiment, the frame 2 of this embodiment comprises an integrally injection-molded housing 20 and a bracket 21. The bracket 21 comprises a main wall 22, which is provided with an isolation hole 229. The inner surface of the main wall 22 is provided with a support protrusion 23 that protrudes inwardly along the x-axis, toward the inside of the housing 20. Furthermore, similarly, the surrounding portion and the outer peripheral portion of this embodiment are both solid structures without process holes. However, the support protrusion 23 is a fully cylindrical structure.

[0079] Combine Figures 13 to 15 , the difference is that the entire outer peripheral surface and the entire inner peripheral surface of the support protrusion 23 are formed from the inner side of the frame 2 by the same inclined top mold 85 that moves in the longitudinal direction.

[0080] The inclined top mold 85 of this embodiment is connected to the lower mold in a sliding manner along the v-axis direction. The v-axis direction is the tilting direction of the present invention. The v-axis direction is on a plane perpendicular to the y-axis direction, that is, the center line of the sliding rod part of the inclined top mold 85 is on a plane perpendicular to the y-axis direction. The angle between the v-axis direction and the z-axis direction is the second angle b, and the value range of the second angle b is 8 degrees to 15 degrees.

[0081] The die head of the inclined top die 85 is provided with an annular groove 850, the center line of the annular groove 850 is along the x-axis direction and the annular groove 850 is open to the surface 851 of the inclined top die 85 along the x-axis direction, and the annular groove 850 includes an outer ring molding surface 8501 and an inner ring molding surface 8502 located on the inner periphery of the outer ring molding surface 8501. The outer ring molding surface 8501 is the molding surface of the present invention. The outer ring molding surface 8501 is used to mold the outer peripheral surface of the support protrusion 23, and the inner ring molding surface 8502 is used to mold the inner peripheral surface of the support protrusion 23.

[0082] See also Figures 14 to 16 ,by Figure 16 The transition from state a to state b illustrates the demolding process between the inclined top mold 95 and the support protrusion 13. In the initial state shown in state A, the surface 851 of the inclined top mold 85 is in contact with the flat inner surface of the main wall 22, and the support protrusion 23 is located in the annular groove 850.

[0083] As the frame 2 rises in the positive z-axis direction and gradually separates from the lower mold, the inclined top mold 85 translates along the v-axis, generating displacement in the x-axis direction. As the inclined top mold 85 rises in the positive z-axis direction, it also gradually moves away from the support protrusion 23 in the x-axis direction, ultimately being completely released from the mold. That is, after the upper and longitudinal molds are released, the support protrusion 23 can be released from the inclined top mold 85 by the inclined top mold 85 moving longitudinally relative to the support protrusion 25 as the frame 2 gradually separates from the lower mold.

[0084] The present invention also includes a processing box constructed with the help of the above-mentioned frame 2. The frame 2 serves as the main body of the waste powder bin of the processing box. In addition to the frame 2, the processing box embodiment also includes the remaining components of the existing processing box, such as the powder bin, photosensitive parts and developing parts. The above-mentioned remaining components are all existing technologies. Those skilled in the art can implement them based on existing technologies such as CN108333900A.

[0085] In other embodiments, the inclined top mold is separated from the supporting protrusion in the longitudinal direction, and the outer peripheral surface of the supporting protrusion is formed by the inclined top mold, but the inner peripheral surface of the supporting protrusion is not formed by the inclined top mold.

[0086] Finally, it should be emphasized that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A frame, which serves as the main body of the waste toner bin of the process cartridge and comprises an integrally injection-molded shell and a bracket. The bracket is located at one longitudinal end of the shell and has a supporting protrusion protruding inwardly of the shell along the longitudinal direction of the shell; Its characteristics are: The bracket includes a surrounding portion surrounding the supporting protrusion, and the surrounding portion is configured as a solid structure without a process hole; The bracket is further provided with an isolation hole, and the surrounding portion is located in the annular area between the supporting protrusion and the isolation hole; The shell includes an outer peripheral portion, the outer peripheral portion is opposite to the supporting protrusion in the horizontal direction of the frame and in the vertical direction of the frame, and the outer peripheral portion is configured as a solid structure without process holes.

2. The frame according to claim 1, wherein: The shell has an inner wall body, and the bracket includes a main wall body. An avoidance groove is formed between the inner wall body, the main wall body and the outer peripheral part. From a horizontal perspective, the notch of the avoidance groove faces the supporting protrusion.

3. The frame according to claim 2, wherein: The inner side of the main wall includes a first surface and a second surface; When viewed from the longitudinal direction of the frame, the second surface is closer to the avoidance groove than the first surface, and the second surface is the inner surface of the avoidance groove; In the longitudinal direction, there is a distance between the first surface and the second surface, and the second surface is farther away from the other end of the longitudinal direction of the housing relative to the first surface. A portion of the support protrusion protrudes from the first surface, and another portion of the support protrusion protrudes from the second surface.

4. The frame according to claim 3, wherein: It also includes an avoidance space. When viewed from the longitudinal direction, the avoidance space and the avoidance groove are respectively arranged on both sides of the supporting protrusion; Viewed from a lateral direction, the supporting protrusion is located in the avoidance space.

5. A processing cartridge, comprising a frame, characterized in that: The frame is the frame according to any one of claims 1 to 4.

6. A frame mold, which serves as the main body of the waste toner bin of the process cartridge. The mold is used for integral injection molding of the frame and includes an upper mold and a lower mold. The upper mold is demoulded vertically relative to the lower mold. The following features: The frame is the frame according to any one of claims 1 to 4 above; Also included is an inclined top mold, the inclined top mold having a slide rod portion and a mold head portion, the molding surface of the mold head portion being used to mold at least a portion of the outer peripheral surface of the supporting protrusion; The sliding rod portion moves relative to the lower mold along an inclined direction having an angle with the vertical direction.

7. The frame mold according to claim 6, characterized in that: The included angle between the slide bar portion and the vertical direction ranges from 8 degrees to 15 degrees.

8. The frame mold according to claim 7, characterized in that: Also includes the second mold; The center line of the slide rod portion is in a plane perpendicular to the longitudinal direction, the molding surface of the die head is used to mold the first part of the outer peripheral surface of the support protrusion, and the molding surface of the second die is used to mold the second part of the outer peripheral surface of the support protrusion.

9. The frame mold according to claim 7, characterized in that: The center line of the sliding rod portion is in a plane perpendicular to the transverse direction, and the molding surface of the die head portion is used to mold the outer peripheral surface of the supporting protrusion.

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