Threaded bottle cap injection molding rear mold

Abstract

The utility model relates to a threaded bottle cap injection molding rear mold which comprises a rear mold bottom plate, a rear mold cushion block arranged on the front side of the rear mold bottom plate, a rear mold connecting plate arranged on the front side of the rear mold cushion block, a rear mold plate arranged on the front side of the rear mold connecting plate and a rear mold core. The front end of the thread forming column is provided with a forming thread part, the thread forming column forwards penetrates through the avoiding hole, the forming thread part extends out of the avoiding hole, the rear mold core is provided with forming stop clamping jaws, the forming stop clamping jaws are distributed around the axis of the avoiding hole in an annular array mode, the rear mold connecting plate is provided with a transmission cavity, a transmission mechanism is arranged in the transmission cavity, and the rear mold connecting plate is provided with a driving connecting piece. And a driving piece for providing power for the transmission mechanism is arranged on the driving connecting piece. The rotary thread forming column is matched with the forming stop clamping jaw, the thread forming column rotates to enable the bottle cap to be separated from the thread forming column in the mold opening process, cost is low, efficiency is high, and damage to threads cannot be caused.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection molding mould, in particular to a kind of screw thread bottle cap injection post mould. BACKGROUND

[0002] Injection bottle cap is commonly used container accessory, usually set up connecting inner thread on injection bottle cap, in order to improve the connecting strength of bottle cap and container, usually the inner thread depth of bottle cap is deeper, and the hardness of bottle cap is greater, so using traditional strong release mode, demolding success rate is low, and inner thread on bottle cap is easily damaged. The mode of taking material by mechanical hand is low in efficiency and high in cost. SUMMARY

[0003] In view of the deficiencies of prior art, the utility model aims at providing a kind of screw thread bottle cap injection post mould.

[0004] The utility model discloses the technical scheme that solves its technical problem is as follows: a kind of screw thread bottle cap injection post mould, including post mould bottom plate, the post mould cushion block of being set in the front side of the post mould bottom plate, the post mould connecting plate of being set in the front side of the post mould cushion block, the post mould plate of being set in the front side of the post mould connecting plate, the post mould kernel of being set in the center of the front side of the post mould plate, the post mould kernel is equipped with the avoiding hole, the post mould plate is rotatably connected with threaded forming column, the threaded forming column front end is equipped with forming thread part, the threaded forming column is forwardly penetrated the avoiding hole, the forming thread part extends the avoiding hole, the post mould kernel is equipped with forming stop dog, the forming stop dog is annular array distribution around the avoiding hole axis, the post mould connecting plate is equipped with transmission cavity, the transmission cavity is equipped with transmission mechanism for driving the threaded forming column rotation, the post mould connecting plate is equipped with driving connection piece, the driving connection piece is equipped with the driving piece for the transmission mechanism provides power.

[0005] As a further improvement of the design, the transmission mechanism includes a driven sprocket threadedly connected to the threaded forming column, and a chain connecting the driven sprocket and the driving piece.

[0006] As a further improvement of the design, the driving piece includes a hydraulic motor that rotates bi-directionally, and a drive sprocket disposed on a rotating shaft of the hydraulic motor.

[0007] As a further improvement of the design, a cam is coaxially connected to the threaded forming column, an outer peripheral surface of the cam is a curved surface extending outward in a spiral manner, a connection between a maximum outer diameter of the outer peripheral surface of the cam and a minimum outer diameter of the outer peripheral surface of the cam is a stop step, and a stop pin assembly is provided on the post mould connecting plate, the stop pin assembly has a stop pin column extending into a running path of the outer peripheral surface of the cam.

[0008] As a further improvement of the present design, the stop pin assembly comprises a stop base arranged on the rear mold connecting plate, a stop pin column in sliding connection with the stop base, a spring arranged in the stop base, and a pressing plate arranged on the stop base, one end of the spring abutting against the stop pin column, the other end of the spring abutting against the pressing plate, the spring exerting an elastic force on the stop pin column towards the outer circumferential surface of the cam, and the stop base being provided with a sliding hole in sliding fit with the stop pin column.

[0009] As a further improvement of the present design, the rear mold connecting plate is provided with a central forming column coaxially arranged with the threaded forming column and penetrating through the threaded forming column, an auxiliary ejection rod being in sliding connection with the central forming column, the auxiliary ejection rod being arranged in an annular array around the axis of the central forming column, the sliding direction of the auxiliary ejection rod being along the axis direction of the central forming column, and an ejection plate being in front-rear sliding connection between the rear mold bottom plate and the rear mold connecting plate, the ejection plate being connected with the auxiliary ejection rod.

[0010] As a further improvement of the present design, the rear mold plate is rotatably connected with at least two threaded forming columns, one driven sprocket being connected with each threaded forming column, and all the driven sprockets being connected with the same chain.

[0011] The present utility model has the advantages that: the threaded forming column and the forming stop claw are matched through rotation, the threaded forming column is rotated to make the bottle cap be separated from the threaded forming column when the mold is opened, the cost is low, the efficiency is high, and the threaded forming column is not damaged. BRIEF DESCRIPTION OF DRAWINGS

[0012] The present utility model is further described below in combination with the drawings and examples.

[0013] Figure 1 is the overall three-dimensional structure schematic diagram of the present utility model.

[0014] Figure 2 is the overall front view schematic diagram of the present utility model.

[0015] Figure 3 is the in Figure 2 A-A position cross-sectional schematic diagram of the present utility model.

[0016] Figure 4 is the side surface structure schematic diagram of the present utility model.

[0017] Figure 5 is the B-B position cross-sectional schematic diagram of the present utility model in Figure 4 .

[0018] Figure 6 is the three-dimensional schematic diagram of the present utility model for installing the rear mold plate and the rear mold core.

[0019] In the figure 1. back mold base plate, 2. ejection plate, 3. back mold pad, 4. back mold connecting plate, 5. drive connecting piece, 6. drive piece, 60. hydraulic motor, 61. driving sprocket, 7. stop pin assembly, 70. stop base, 71. pressing plate, 72. spring, 73. stop pin column, 8. transmission mechanism, 80. driven sprocket, 81. chain, 9. back mold plate, 10. back mold core, 11. forming stop pawl, 12. threaded forming column, 120. forming thread part, 13. center forming column, 14. transmission cavity, 15. auxiliary ejection rod, 16. sliding hole, 17. avoiding hole, 18. cam. DETAILED DESCRIPTION

[0020] The utility model will be combined with the drawing and specific implementation to explain in detail, the illustrative embodiment and the explanation are only used to explain the utility model, but not as the limitation to the utility model. EMBODIMENT

[0021] Please see Figure 1 、 Figure 3 The embodiment provides a threaded bottle cap injection back mold, including back mold base plate 1, back mold pad 3 being arranged in the front side of back mold base plate 1, back mold connecting plate 4 being arranged in the front side of back mold pad 3, back mold plate 9 being arranged in the front side of back mold connecting plate 4, back mold core 10 being arranged in the center of the front side of back mold plate 9, the back mold core 10 is equipped with avoiding hole 17, the threaded forming column 12 is rotatably connected on the back mold plate 9, the threaded forming column 12 front end is equipped with forming thread part 120, the threaded forming column 12 is forwardly penetrated avoiding hole 17, the forming thread part 120 is stretched out avoiding hole 17, the back mold core 10 is equipped with forming stop pawl 11, the forming stop pawl 11 is annular array distribution around the axis of avoiding hole 17, the back mold connecting plate 4 is equipped with transmission cavity 14, the transmission cavity 14 is equipped with transmission mechanism 8 for driving the threaded forming column 12 rotation, the back mold connecting plate 4 is equipped with drive connecting piece 5, the drive connecting piece 5 is equipped with drive piece 6 for providing power for transmission mechanism 8.

[0022] Through the cooperation of the threaded forming column 12 and the forming stop pawl 11 of rotation, when the mold is opened, the threaded forming column 12 is rotated to make the bottle cap be separated from the threaded forming column 12, the cost is low, the efficiency is high, and the damage of the thread can not be caused.

[0023] Please see Figure 5 To improve the rotation precision of the threaded forming column 12, the transmission mechanism 8 includes driven sprocket 80 connected with the threaded forming column 12, and chain 81 connecting the driven sprocket 80 with the drive piece 6.

[0024] Please see Figure 5In order to improve the stability of the driving member 6, the driving member 6 comprises a hydraulic motor 60 rotating in both directions, and a driving sprocket 61 arranged on the rotating shaft of the hydraulic motor 60.

[0025] Please refer to Figure 6 In order to facilitate the control of the start and stop position of the formed thread, a cam 18 is coaxially connected to the thread forming column 12, the outer circumferential surface of the cam 18 is a spiral outwardly extending curved surface, the connection between the maximum outer diameter of the outer circumferential surface of the cam 18 and the minimum outer diameter of the outer circumferential surface of the cam 18 is a stop step, and a stop pin assembly 7 is arranged on the rear mold connecting plate 4, and the stop pin assembly 7 has a stop pin column 73 extending into the running path of the outer circumferential surface of the cam 18.

[0026] Please refer to Figure 5 In order to facilitate the maintenance and replacement of the stop pin assembly, the stop pin assembly 7 comprises a stop base 70 arranged on the rear mold connecting plate, a stop pin column 73 in sliding connection with the stop base 70, a spring 72 arranged in the stop base 70, and a pressing plate 71 arranged on the stop base 70, one end of the spring 72 abuts against the stop pin column 73, the other end of the spring 72 abuts against the pressing plate 71, the spring 72 exerts a spring force on the stop pin column 73 towards the outer circumferential surface of the cam 18, a sliding hole 16 is arranged in the stop base 70, and the stop pin column 73 is in sliding fit with the sliding hole 16.

[0027] Please refer to Figure 1 In order to prevent the bottle cap from hanging on the thread forming column 12 in the last stage of disengagement from the thread forming column 12, a center forming column 13 is arranged on the rear mold connecting plate 4, the center forming column 13 is coaxially arranged with the thread forming column 12 and penetrates the thread forming column 12, an auxiliary ejection rod 15 is in sliding connection with the center forming column 13, the auxiliary ejection rod 15 is arranged in an annular array around the axis of the center forming column 13, the sliding direction of the auxiliary ejection rod 15 is along the axis direction of the center forming column 13, an ejection plate 2 is in front and back sliding connection between the rear mold bottom plate 1 and the rear mold connecting plate 4, and the ejection plate 2 is connected with the auxiliary ejection rod 15.

[0028] Please refer to Figure 6 In order to improve the production efficiency, at least two thread forming columns 12 are rotatably connected to the rear mold plate 9, one driven sprocket 80 is connected to each thread forming column 12, and all the driven sprockets 80 are connected to the same chain 81.

[0029] The above merely illustrates the embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields, which are made according to the content of the present application specification and drawings, are also included in the patent protection scope of the present application.

Claims

1. A post-injection mold for a threaded bottle cap, characterized in that, The device includes a rear mold base plate, a rear mold pad block disposed on the front side of the rear mold base plate, a rear mold connecting plate disposed on the front side of the rear mold pad block, a rear mold template disposed on the front side of the rear mold connecting plate, and a rear mold core disposed at the center of the front side of the rear mold template. The rear mold core has a clearance hole. A threaded forming column is rotatably connected to the rear mold template. The front end of the threaded forming column has a forming thread portion. The threaded forming column passes forward through the clearance hole, and the forming thread portion extends out of the clearance hole. The rear mold core has forming stop claws. The forming stop claws are arranged in a circular array around the axis of the clearance hole. The rear mold connecting plate has a transmission cavity. The transmission cavity has a transmission mechanism that drives the threaded forming column to rotate. The rear mold connecting plate has a drive connector. The drive connector has a drive component that provides power to the transmission mechanism.

2. The injection mold for a threaded bottle cap according to claim 1, characterized in that, The transmission mechanism includes a driven sprocket threadedly connected to the threaded forming column and a chain connecting the driven sprocket and the driving member.

3. The injection mold for a threaded bottle cap according to claim 2, characterized in that, The driving component includes a bidirectional rotating hydraulic motor and a drive sprocket mounted on the rotating shaft of the hydraulic motor.

4. The injection mold for a threaded bottle cap according to claim 3, characterized in that, A cam is coaxially connected to the threaded forming column. The outer circumferential surface of the cam is a spirally extending curved surface. The connection between the maximum outer diameter and the minimum outer diameter of the outer circumferential surface of the cam is a stop step. A stop pin assembly is provided on the rear mold connecting plate. The stop pin assembly has a stop pin post that extends into the running path of the outer circumferential surface of the cam.

5. The injection mold for a threaded bottle cap according to claim 4, characterized in that, The stop pin assembly includes a stop base disposed on the rear mold connecting plate, a stop pin slidably connected to the stop base, a spring disposed within the stop base, and a pressure plate disposed on the stop base. One end of the spring abuts against the stop pin, and the other end of the spring abuts against the pressure plate. The spring applies a spring force to the stop pin toward the outer peripheral surface of the cam. The stop base is provided with a sliding hole, and the stop pin slides into the sliding hole.

6. The injection mold for a threaded bottle cap according to claim 5, characterized in that, The rear mold connecting plate is provided with a central forming post, which is coaxially arranged with and passes through the threaded forming post. An auxiliary ejector rod is slidably connected inside the central forming post. The auxiliary ejector rods are arranged in a ring array around the axis of the central forming post. The sliding direction of the auxiliary ejector rods is along the axis of the central forming post. An ejector plate is slidably connected between the rear mold base plate and the rear mold connecting plate. The ejector plate is connected to the auxiliary ejector rods.

7. The injection mold for a threaded bottle cap according to claim 6, characterized in that, At least two threaded forming columns are rotatably connected to the rear template, and each threaded forming column is connected to a driven sprocket. All driven sprockets are connected to the same chain.

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