A rotating slider structure and a two-color injection mold

Abstract

The present invention discloses a rotating slider structure, including a slider, a guide mechanism, a limit mechanism and a slider driving mechanism arranged on a rear mold, wherein the slider is located outside the rear mold cavity. The guide mechanism is arranged on the rear mold, and the slider and the guide mechanism are slidably matched. A slot is provided on the side of the slider away from the slider head, and the limit mechanism includes two spring blocks, which are symmetrically arranged on both sides of the slot, and each spring block is provided with a spring. The slider driving mechanism includes a hard rubber inclined guide column and a soft rubber inclined guide column, and the hard rubber inclined guide column and the soft rubber inclined guide column are respectively arranged on both sides of the front mold. The present invention also discloses a two-color injection mold. The present invention realizes that the hard rubber inclined guide column drives the slider to be ejected when the mold is closed for the first time, and the soft rubber inclined guide column drives the slider to withdraw and undercut when the mold is opened for the second time. The slider does not move relative to the rear mold during the first mold opening and the second mold closing process. The present invention has a simple and ingenious structure, low manufacturing cost and convenient installation.

Description

Technical Field

[0001] The invention relates to the technical field of double-color injection molds, and in particular to a rotary slider structure and a double-color injection mold. Background Art

[0002] The two-color injection mold is used to form two-color products with a hard plastic part and a soft plastic part combined into an integrated structure. The rear mold of the two-color injection mold has two rear model cavities, and the front mold of the two-color injection mold has two front model cores. The two rear model cavities can be matched with the two front model cores respectively. The injection molding process of two-color products is divided into two stages. First, the hard plastic part is injection-molded. After the mold is opened, the hard plastic part remains in the rear mold. The injection molding machine drives the rear mold to rotate 180° and then close the mold with the front mold. The rear model cavity with the molded hard plastic part cooperates with another front model core to form a soft injection cavity. After the soft plastic is injected, the soft plastic is combined with the previously formed hard plastic part to form a two-color product (see Figure 1 ).

[0003] The two-color product includes a hard rubber part 61 and a soft rubber part 62. There is an undercut structure 611 on the side of the hard rubber part 61, and the undercut amount of the undercut structure 611 is relatively large. A slider is set in the rear mold to solve the problem of undercut. The injection molding process requires two-side mold closing and two mold openings. During the first mold closing, the slider needs to be driven out by the guide column on the front mold. During the first mold opening, the molded hard rubber part remains in the rear mold cavity. The slider needs to keep its position unchanged for the second mold closing. After the second mold closing, soft rubber is injected to combine with the molded hard rubber part. During the second mold opening, the slider needs to be undercut to eject the product. The slider driving structure of the existing two-color injection mold is difficult to drive the slider in the above-mentioned way, or the existing slider driving mechanism has a very complex structure, high difficulty in manufacturing and assembly, and high cost. Therefore, the prior art needs to be further improved. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, one object of the present invention is to propose a rotating slider structure. The existing slider driving mechanism is difficult to realize the above-mentioned driving method of the slider, or the existing slider driving mechanism has the problems of very complex structure, high difficulty in manufacturing and assembly, and high cost.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] A rotary slider structure comprises a slider arranged on a rear mold, a guide mechanism, a limit mechanism and a slider driving mechanism arranged on a front mold. The slider is located outside the rear mold cavity and has a slider head on the side of the slider close to the rear mold cavity.

[0007] The guide mechanism is fixed on the rear mold, and both sides and the bottom of the sliding block are slidably matched with the guide mechanism.

[0008] A slot is provided on one side of the slider away from the slider head. The limiting mechanism comprises two spring blocks which are symmetrically arranged on both sides of the slot. Each spring block is provided with a spring.

[0009] The slider driving mechanism comprises a hard rubber oblique guide column and a soft rubber oblique guide column, and the hard rubber oblique guide column and the soft rubber oblique guide column are respectively arranged on both sides of the front mold.

[0010] One end of the hard rubber oblique guide pin and the soft rubber oblique guide pin can be fixedly connected to the front mold, and the other end can be extended into the slot of the slider to drive the slider to move in the direction of approaching or moving away from the rear mold cavity.

[0011] Furthermore, the guide mechanism includes two guide blocks and a bottom plate, the two guide blocks are respectively arranged on two opposite sides of the slider, and each guide block is slidably matched with the opposite side of the slider.

[0012] The bottom plate is located at the bottom of the slider, the bottom of the slider is slidably matched with the surface of the bottom plate, and a U-shaped notch corresponding to the slot is opened on one side of the bottom plate.

[0013] Furthermore, the guide block is a long strip with a T-shaped cross section, and each guide block has an extended probing edge at the upper portion of one side close to the slider, and the probing edge is slidably guided with the step on the corresponding side of the slider.

[0014] Furthermore, the limiting mechanism includes a limiting clamp, which is fixedly installed inside the bottom plate. The bottom of the slider is provided with two limiting grooves that can cooperate with the movable end of the limiting clamp, and the two limiting grooves are arranged in sequence along the movement direction of the slider.

[0015] Furthermore, the slider is symmetrically provided with spring block installation cavities on both sides of its slot, and each spring block is located in the spring block installation cavity on the same side and slidably cooperates with the slider.

[0016] One end of the two spring blocks that are positively corresponding and opposite to each other extends into the slot of the slider, and the two springs are respectively located in the two spring block installation cavities, and each spring supports one end of the spring block on the same side that is away from the slot.

[0017] The upper ends of the end surfaces of the two spring blocks at opposite ends are inclined surfaces, and the inclined surfaces of the two spring blocks form a V-shaped structure.

[0018] Furthermore, the hard rubber inclined guide column is a right-angled trapezoidal structure, and a first fixing seat is provided at one end of the wide side of the hard rubber inclined guide column, and a narrow side end thereof can be extended into the slot to be plugged and matched with the slider.

[0019] One side of the oblique edge of the hard rubber oblique guide pin is close to the slider head and contacts the inner side of the slot to drive the slider to move toward the rear mold cavity.

[0020] One end of the narrow side of the hard rubber inclined guide pin is a pointed structure with inclined surfaces on both sides. When the mold is closed once, the pointed structure of the hard rubber inclined guide pin is inserted between the two spring blocks, and the hard rubber inclined guide pin drives the slider to move toward the direction close to the rear model cavity.

[0021] Furthermore, the soft rubber oblique guide column is a rod-shaped structure, one end of the soft rubber oblique guide column is provided with a second fixing seat, and the other end thereof can be extended into the slot to be plugged and matched with the slider.

[0022] The soft rubber inclined guide pin is arranged obliquely relative to the mold opening direction, with one end connected to the second fixing seat close to the rear mold cavity and the other end away from the rear mold cavity.

[0023] The other end of the soft rubber inclined guide pin is also a pointed structure with inclined surfaces on both sides, and the outer wall thereof facing away from the rear mold cavity is a flat structure.

[0024] During the secondary mold closing, the pointed structure of the soft rubber inclined guide pin is inserted into and pushes away the two spring blocks. As the soft rubber inclined guide pin continues to be inserted, the two spring blocks reset and lock the soft rubber inclined guide pin. During the secondary mold opening process, the soft rubber inclined guide pin drives the slider to move away from the rear model cavity through the two spring blocks.

[0025] Furthermore, the slider is located at a side of the slider head away from the rear mold cavity, and the slider head is fixedly connected to the slider as a whole.

[0026] Another object of the present invention is to provide a two-color injection mold.

[0027] A two-color injection mold includes a rear mold and a front mold, and also includes the above-mentioned rotating slider structure. The rear mold has two rear mold cavities arranged in parallel and opposite to each other, and the front mold has two front mold cores arranged opposite to each other. Each front mold core can cooperate with the two rear mold cavities to form an injection cavity.

[0028] The hard rubber oblique guide column is arranged on the outer side of one of the front mold cores, and the soft rubber oblique guide column is arranged on the outer side of the other front mold core.

[0029] A slider is arranged on the outside of each rear mold cavity, and guide blocks on both sides of the slider and a bottom plate at the bottom are fixed on the rear mold.

[0030] Furthermore, the first fixing seat and the second fixing seat are fixedly connected to the front mold bolts respectively.

[0031] By adopting the above technical scheme, the beneficial technical effect of the present invention is: the present invention adopts the cooperation of hard rubber inclined guide pillars and limiting mechanisms as well as the cooperation of soft rubber inclined guide pillars and limiting mechanisms to achieve that the hard rubber inclined guide pillars drive the slider to be ejected when the mold is closed for the first time, and the soft rubber inclined guide pillars drive the slider to withdraw and undercut when the mold is opened for the second time. During the first mold opening and second mold closing processes, the slider does not move relative to the rear mold. The present invention has a simple structure, low manufacturing cost and easy installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A schematic diagram of the partial structure of the two-color product mentioned in the background technology.

[0033] Figure 2 It is a schematic diagram of the structural principle of a rotary slider structure of the present invention after removing the soft rubber oblique guide column.

[0034] Figure 3 It is a schematic diagram of the cross-sectional structure of a rotary slider structure of the present invention after the soft rubber inclined guide column is removed.

[0035] Figure 4 yes Figure 2 The diagram shows the matching relationship between the limiting mechanism and the hard rubber inclined guide column in a certain state.

[0036] Figure 5 yes Figure 2 The diagram shows the matching relationship between the limiting mechanism and the hard rubber inclined guide column in another state.

[0037] Figure 6 It is a schematic diagram of the structural principle of a rotary slider structure of the present invention after removing the hard rubber oblique guide column.

[0038] Figure 7 It is a schematic diagram of the cross-sectional structure of a rotary slider structure of the present invention after removing the hard rubber oblique guide column.

[0039] Figure 8 yes Figure 6 The diagram shows the matching relationship between the limiting mechanism and the soft rubber inclined guide column in a certain state.

[0040] Fig. 9 yes Figure 6 The diagram shows the matching relationship between the limiting mechanism and the soft rubber inclined guide column in another state. DETAILED DESCRIPTION

[0041] The present invention is described in detail below in conjunction with the accompanying drawings:

[0042] Embodiment 1, combination Figures 2 to 9 A rotary slider structure includes a slider 1, a guide mechanism 2, a limit mechanism 3, and a slider 1 driving mechanism provided on a front mold. The slider 1 is located outside the rear mold cavity, and the slider 1 has a slider head 11 on the side close to the rear mold cavity. The slider 1 is located on the side of the slider head 11 away from the rear mold cavity, and the slider head 11 is fixedly connected to the slider 1 as a whole. The slider head 11 moves with the slider 1, and the end of the slider head 11 extends into the rear mold cavity. After injection molding, the slider head 11 needs to be withdrawn from the undercut and then the mold is opened.

[0043] The guide mechanism 2 is fixed on the rear mold, and both sides and the bottom of the slider 1 are slidably matched with the guide mechanism 2. The guide mechanism 2 includes two guide blocks 21 and a bottom plate 22. The two guide blocks 21 are respectively arranged on opposite sides of the slider 1. The guide blocks 21 are fixedly connected with the rear mold bolts, and each guide block 21 is slidably matched with the opposite side of the slider 1.

[0044] The guide block 21 is a long strip with a T-shaped cross section. Each guide block 21 has an extended probe edge 211 on the upper part of the side close to the slider 1. The probe edge 211 is slidingly guided with the step on the corresponding side of the slider 1. The bottom plate 22 is located at the bottom of the slider 1. The bottom plate 22 is fixedly connected to the rear mold bolts. The bottom of the slider 1 is slidingly matched with the surface of the bottom plate 22. The guide block 21 guides the movement of the slider 1 to ensure that it moves in a straight line. The limiting mechanism 3 includes a limiting clamp, which is fixedly installed inside the bottom plate 22. The bottom of the slider 1 is provided with two limiting grooves that can be matched with the movable end of the limiting clamp. The two limiting grooves are arranged in sequence along the movement direction of the slider 1.

[0045] The limit clamp is a commonly used limit mechanism in the field of mold manufacturing. Its function is to position the slider 1 when it is only subjected to gravity or no force. The movable end of the limit clamp is inserted into the limit groove at the bottom of the slider 1 to prevent it from sliding freely relative to the guide block 21 and the bottom plate 22. When the slider 1 is subjected to a certain driving force, the movable end of the limit clamp will be disengaged from the limit groove, and the slider 1 moves relative to the guide block 21 and the bottom plate 22 under the action of the driving force.

[0046] The slider 1 has a slot 12 on one side away from the slider head 11, and a U-shaped notch 221 corresponding to the slot 12 is formed on one side of the bottom plate 22. The limiting mechanism 3 includes two spring blocks 31, which are symmetrically arranged on both sides of the slot 12, and each spring block 31 is equipped with a spring 32. The slider 1 has two spring block mounting cavities 13 symmetrically formed on both sides of its slot 12, and the extension directions of the two spring block mounting cavities 13 are perpendicular to the movement direction of the slider and are positively opposite. Each of the spring blocks 31 is located in the spring block mounting cavity 13 on the same side, and the spring block 31 can only slide with the slider 1 along the extension direction of the spring block mounting cavity 13, and cannot rotate around itself.

[0047] The two spring blocks 31 face each other, and the corresponding ends of the two spring blocks 31 extend into the slot 12 of the slider 1. The two springs 32 are respectively located in the two spring block installation cavities 13, and are respectively located at the ends of the spring blocks 31 that are away from each other. Each spring 32 supports the end of the spring block 31 on the same side away from the slot 12, and the corresponding ends of the two spring blocks 31 contact each other under the action of the spring 32. The upper end surfaces of the opposite ends of the two spring blocks 31 are inclined surfaces 311, and the inclined surfaces 311 of the two spring blocks 31 form a V-shaped structure.

[0048] The driving mechanism of the slider 1 includes a hard rubber inclined guide post 4 and a soft rubber inclined guide post 5, which are respectively arranged on the sides of the two front mold cores of the front mold that are away from each other. One end of the hard rubber inclined guide post 4 and the soft rubber inclined guide post 5 can be fixedly connected to the front mold, and the other end can be extended into the slot 12 of the slider 1, and drive the slider 1 to move in the direction of approaching or moving away from the rear mold cavity.

[0049] The hard plastic inclined guide post 4 is a right-angled trapezoidal structure, and one end of the wide side of the hard plastic inclined guide post 4 has a first fixing seat 41 integrally formed therewith, and one end of the narrow side can be inserted into the slot 12 to be plugged into the slider 1. One side of the inclined side of the hard plastic inclined guide post 4 is close to the slider head 11, and contacts the inner side of the slot 12 and drives the slider 1 to move toward the rear mold cavity.

[0050] One end of the narrow side of the hard rubber inclined guide column 4 is a pointed structure with inclined surfaces on both sides. When the mold is closed for the first time, the pointed structure of the hard rubber inclined guide column 4 first contacts the inclined surfaces of the two spring blocks 31. The two spring blocks 31 move to both sides under the action of the pointed structure of the hard rubber inclined guide column 4, and the hard rubber inclined guide column 4 is inserted between the two spring blocks 31. During the process of inserting the hard rubber inclined guide column 4 into the slot 12, the inclined edge of the hard rubber inclined guide column 4 is always in contact with the inner wall of the slot 12, driving the slider 1 to move in the direction close to the rear model cavity.

[0051] After the first mold closing, the hard rubber inclined guide column 4 drives the slider 1 to move into place, and the movable end of the limit clamp is stuck in one of the limit grooves. After the hard rubber injection is completed, the mold is opened once, and the formed hard rubber part moves together with the rear mold. The slider 1 remains in position relative to the rear mold under the action of the limit clamp, and the rear mold rotates 180° under the drive of the injection molding machine, preparing for the second mold closing.

[0052] The soft rubber inclined guide post 5 is a rod-shaped structure, and one end of the soft rubber inclined guide post 5 is provided with a second fixed seat 51 integrally formed therewith, and the other end can be inserted into the slot 12 and plugged into the slider 1. The soft rubber inclined guide post 5 is arranged obliquely relative to the mold opening direction, and one end connected to the second fixed seat 51 is close to the rear mold cavity, and the other end is far away from the rear mold cavity. The other end of the soft rubber inclined guide post 5 is also a pointed structure with inclined surfaces on both sides, and the outer wall of the side away from the rear mold cavity is a flat structure 52. When the pointed structure of the soft rubber inclined guide post 5 is inserted between the two spring blocks 31, its insertion force drives the two spring blocks 31 to retreat to both sides respectively.

[0053] During the secondary mold closing, the pointed structure of the soft rubber inclined guide pillar 5 is inserted into the opposite ends of the two spring blocks 31 and pushes the two spring blocks 31 apart. As the soft rubber inclined guide pillar 5 continues to be inserted, the soft rubber inclined guide pillar 5 is tilted relative to the insertion direction of the soft rubber inclined guide pillar 5, and the two spring blocks 31 are reset to lock the soft rubber inclined guide pillar 5. After the secondary mold closing is completed, the soft rubber is injected, and the soft rubber is combined with the formed hard rubber part to form a two-color product.

[0054] During the secondary mold opening process, the two-color product moves together with the rear mold. During the process of pulling out the soft rubber inclined guide pin 5 from the slot 12 of the slider 1, the soft rubber inclined guide pin 5 drives the slider 1 to move in the direction away from the rear model cavity relative to the rear mold through the two spring blocks 31. The slider head 11 exits the undercut. When the soft rubber inclined guide pin 5 separates from the spring block 31, the movable end of the limit clamp is inserted into another limit groove to realize the positioning of the slider 1. After the secondary mold opening is completed, the ejection system of the rear mold is activated to eject the two-color product.

[0055] Embodiment 2, combined Figures 2 to 9 A two-color injection mold includes a rear mold and a front mold, and also includes the above-mentioned rotating slider structure. The rear mold of the two-color injection mold has two front mold cavities arranged oppositely, namely a first front mold cavity and a second front mold cavity. The front mold has two front mold cores arranged oppositely, namely a first front mold core and a second front mold core, and the first front mold core and the second front mold core can respectively cooperate with the two front mold cavities.

[0056] Among them, the hard rubber inclined guide column 4 is provided on the outside of the first front mold core, and the hard rubber inclined guide column 4 is fixedly connected to the front mold bolt through the first fixed seat 41. The soft rubber inclined guide column 5 is provided on the outside of the second front mold core, and the soft rubber inclined guide column 5 is fixedly connected to the front mold bolt through the second fixed seat 51. A slider 1 is provided on the side of the first front mold cavity away from the second front mold cavity, and a slider 1 is also provided on the side of the second front mold cavity away from the first front mold cavity. The guide blocks 21 on both sides of the slider 1 and the bottom plate 22 at the bottom are fixed on the rear mold. The first fixed seat 41 and the second fixed seat 51 are fixedly connected to the front mold bolts respectively.

[0057] Parts not described in the present invention can be implemented by adopting or drawing on existing technologies.

[0058] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0059] Furthermore, the terms “first” and “second” are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0060] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. A rotary slider structure, characterized in that: It includes a slider, a guide mechanism, a limit mechanism, and a slider driving mechanism provided on the rear mold, wherein the slider is located outside the rear mold cavity, and a slider head is provided on the side of the slider close to the rear mold cavity; The guide mechanism is fixed on the rear mold, and both sides and the bottom of the slider are slidably matched with the guide mechanism; The guide mechanism comprises two guide blocks and a bottom plate, wherein the two guide blocks are respectively arranged on opposite sides of the slider, and each guide block is slidably matched with the opposite side of the slider; The bottom plate is located at the bottom of the slider, the bottom of the slider is slidably matched with the surface of the bottom plate, and a U-shaped notch corresponding to the slot is opened on one side of the bottom plate; A slot is provided on the side of the slider away from the slider head, and the limiting mechanism includes two spring blocks, which are symmetrically arranged on both sides of the slot, and each spring block is equipped with a spring; The limiting mechanism also includes a limiting clip, which is fixedly installed inside the bottom plate. The bottom of the slider is provided with two limiting grooves that can be matched with the movable end of the limiting clip, and the two limiting grooves are arranged in sequence along the movement direction of the slider; The slider driving mechanism comprises a hard rubber oblique guide column and a soft rubber oblique guide column, and the hard rubber oblique guide column and the soft rubber oblique guide column are respectively arranged on both sides of the front mold; One end of the hard rubber inclined guide pin and the soft rubber inclined guide pin can be fixedly connected to the front mold, and the other end can be extended into the slot of the slider to drive the slider to move in the direction of approaching or moving away from the rear mold cavity; The hard rubber oblique guide column is a right-angled trapezoidal structure, a first fixing seat is provided at one end of the wide side of the hard rubber oblique guide column, and a narrow side end thereof can be inserted into the slot to be plugged and matched with the slider; One side of the bevel of the hard rubber bevel guide pin is close to the slider head and contacts the inner side of the slot and drives the slider to move toward the rear mold cavity; One end of the narrow side of the hard rubber inclined guide pin is a pointed structure with inclined surfaces on both sides. When the mold is closed once, the pointed structure of the hard rubber inclined guide pin is inserted between the two elastic blocks, and the hard rubber inclined guide pin drives the slider to move toward the direction close to the rear mold cavity; After the hard plastic injection is completed, the mold is opened once, and the formed hard plastic part moves together with the rear mold. The slider is kept in place relative to the rear mold under the action of the limit clamp, and the rear mold is rotated 180° under the drive of the injection molding machine to prepare for the second mold closing; The soft rubber inclined guide column is a rod-shaped structure, one end of which is provided with a second fixing seat, and the other end of which can be inserted into the slot and plugged into the slider; The soft rubber inclined guide pin is arranged obliquely relative to the mold opening direction, and one end thereof connected to the second fixing seat is close to the rear mold cavity, and the other end thereof is far away from the rear mold cavity; The other end of the soft rubber inclined guide pin is also a pointed structure with inclined surfaces on both sides, and the outer wall of the side away from the rear mold cavity is a flat structure; During the secondary mold closing, the pointed structure of the soft rubber inclined guide pin is inserted into and pushes away the two spring blocks. As the soft rubber inclined guide pin continues to be inserted, the two spring blocks reset and lock the soft rubber inclined guide pin. During the secondary mold opening process, the soft rubber inclined guide pin drives the slider to move away from the rear model cavity through the two spring blocks.

2. A rotary slider structure according to claim 1, characterized in that: The guide block is a long strip with a T-shaped cross section. Each guide block has an extended probing edge at the upper portion of one side close to the slider, and the probing edge is slidably guided with the step on the corresponding side of the slider.

3. A rotary slider structure according to claim 1, characterized in that: The slider is symmetrically provided with spring block installation cavities on both sides of its slot, and each spring block is located in the spring block installation cavity on the same side and slidably cooperates with the slider; The positively corresponding and opposite ends of the two spring blocks extend into the slots of the slider, and the two springs are respectively located in the mounting cavities of the two spring blocks, and each spring supports the end of the spring block on the same side away from the slot; The upper ends of the end surfaces of the two spring blocks at opposite ends are inclined surfaces, and the inclined surfaces of the two spring blocks form a V-shaped structure.

4. A rotary slider structure according to claim 1, characterized in that: The slider is located at a side of the slider head away from the rear mold cavity, and the slider head is fixedly connected with the slider to form a whole.

5. A two-color injection mold, characterized in that: The method comprises a rear mold and a front mold, and further comprises the rotating slider structure as claimed in any one of claims 1 to 4, wherein the rear mold has two rear mold cavities arranged in parallel and opposite to each other, and the front mold has two front mold cores arranged opposite to each other, and each front mold core can cooperate with the two rear mold cavities to form an injection cavity; The hard rubber oblique guide column is arranged on the outer side of one front mold core, and the soft rubber oblique guide column is arranged on the outer side of the other front mold core; A slider is arranged on the outside of each rear mold cavity, and guide blocks on both sides of the slider and a bottom plate at the bottom are fixed on the rear mold.

6. A two-color injection mold according to claim 5, characterized in that: The first fixing seat and the second fixing seat are respectively fixedly connected with the front mold bolts.

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