Blow molding machine electric mold closing device capable of adjusting mold thickness
By introducing components such as cross arms, fixing blocks, guide pillars, and servo motors into the mold clamping device of a blow molding machine, precise adjustment of mold thickness and optimization of energy consumption have been achieved, solving the problem of difficult control of mold thickness in existing devices, improving product precision and reducing energy consumption.
Patent Information
- Application Number
- CN202511500965.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-21
- Publication Date
- 2025-11-28
AI Technical Summary
Existing blow molding machine clamping devices are difficult to control mold thickness precisely, resulting in low product precision, complex structure and high energy consumption. The mechanism for adjusting mold thickness is inconvenient to operate and difficult to maintain.
The system employs components such as a cross arm, a fixed block, front and rear templates, guide pillars, a mold closing mechanism, adjusting wedges, and a servo motor. The servo motor drives the long swing arm to achieve fine-tuning of the mold. Combined with the adjusting screw and wedge structure, it enables precise adjustment of the mold thickness and optimization of energy consumption.
It enables precise adjustment of mold thickness, reduces energy consumption, simplifies operation procedures, improves product precision, and reduces equipment maintenance difficulty.
Smart Images
Figure CN121018909A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of blow molding machine technology, and more specifically to an electric mold clamping device for blow molding machines capable of adjusting mold thickness. Background Technology
[0002] With the development of various industries, the market demands increasingly higher precision and quality for plastic products. Existing mold clamping devices are mainly hydraulic, which are difficult to control in terms of speed, result in low product precision, and are complex in structure and energy-intensive. Furthermore, due to the cumulative effects of mold thickness and equipment processing errors, mold clamping devices can exhibit certain deviations, requiring fine-tuning of the mold thickness. Existing mechanisms for adjusting mold thickness mainly include eccentric wheel structures and screw structures, which are relatively cumbersome to operate, and the eccentric wheel structure is also relatively complex and difficult to maintain. Therefore, those skilled in the art have provided an electric mold clamping device for blow molding machines capable of adjusting mold thickness to solve the problems mentioned in the background art. Summary of the Invention
[0003] The purpose of this invention is to provide an electric mold clamping device for a blow molding machine that can adjust the mold thickness, so as to solve the problems mentioned in the background art.
[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows: it includes a cross arm, a fixing block, a front template, a rear template, a fixing seat, a guide post, a mold closing mechanism, a fixing wedge, an adjusting wedge, a fixing plate, and an adjusting screw; two cross arms are fixed at both ends of the guide post, and the front template is fixed to the inner side of the front cross arm through the fixing block. The bottom of the front template is fixed to the guide post, and the rear template is provided on one side of the front template. The rear template is slidably connected to the guide post, and a fixing plate is fixed to one side of the rear template. The adjusting screw is screwed to the fixing plate and rotatably connected to the adjusting wedge at its bottom. The inclined surface of the adjusting wedge is slidably connected to the inclined surface of the fixing wedge. Fixing seats are fixed to the inner sides of the rear cross arm and the fixing wedge, and a mold closing mechanism is installed between the two fixing seats.
[0005] Furthermore, the mold clamping mechanism includes a long swing arm, a rotating shaft arm, a drive arm, a mounting plate, a reducer, a servo motor, a base, a first rotating shaft, and a second rotating shaft; the servo motor is connected to the reducer, the reducer is mounted on the mounting plate, the bottom of the mounting plate is fixed on the base, the base is slidably connected to the guide post, the output shaft of the reducer is connected to the drive arm, the rotating shaft arm is coaxial with the center of the drive arm, both ends of the rotating shaft arm are respectively connected to the long swing arm through the first rotating shaft, the first rotating shaft is mounted on the drive arm, and the long swing arm is respectively connected to the fixed base through the second rotating shaft.
[0006] Furthermore, the adjusting wedge is slidably connected to the fixed wedge via a slider.
[0007] The beneficial effects of the present invention after adopting the above structure are as follows: The electric mold clamping device for blow molding machines that can adjust the mold thickness of the present invention can move the adjusting wedge up and down by rotating the adjusting screw. Due to the effect of the inclined plane, the rear mold plate can move slightly back and forth along the guide post, thereby achieving the requirement of adjusting the mold thickness and eliminating the mold thickness change caused by mechanical deformation. Attached Figure Description
[0008] Figure 1 This is a planar structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the present invention; Figure 3 This is a structural diagram of the mold closing mechanism of the present invention; Figure 4 This is a structural diagram of the mold closing mechanism of the present invention during mold opening; Figure 5 This is a structural diagram of the mold closing mechanism of the present invention during mold closing.
[0009] Explanation of reference numerals in the attached figures: 1. Cross arm, 2. Fixing block, 3. Front template, 4. Rear template, 5. Fixing seat, 6. Guide pillar, 7. Mold closing mechanism, 71. Long swing arm, 72. Rotating shaft arm, 73. Drive arm, 74. Mounting plate, 75. Reducer, 76. Servo motor, 77. Base, 78. First rotating shaft, 79. Second rotating shaft, 8. Fixing wedge, 9. Adjusting wedge, 10. Fixing plate, 11. Adjusting screw, 12. Slider. Detailed Implementation
[0010] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0011] See as Figure 1 —— Figure 5As shown, this specific embodiment adopts the following technical solution: it includes a cross arm 1, a fixing block 2, a front template 3, a rear template 4, a fixing seat 5, a guide post 6, a mold closing mechanism 7, a fixing wedge 8, an adjusting wedge 9, a fixing plate 10, and an adjusting screw 11; two cross arms 1 are fixed to the front and rear ends of the guide post 6 respectively, and the front template 3 is fixed to the inner side of the front cross arm 1 through the fixing block 2. The bottom of the front template 3 is fixed to the guide post 6, and a rear template 4 is provided on one side of the front template 3. The rear template 4 is slidably connected to the guide post 6. A fixing plate 10 is fixed on one side, and an adjusting screw 11 is screwed to the fixing plate 10. The bottom of the adjusting screw 11 is installed and engaged with the inner hole of the adjusting wedge 9 through a small bearing, so that the adjusting screw 11 and the adjusting wedge 9 can rotate. The inclined surface of the adjusting wedge 9 and the inclined surface of the fixed wedge 8 are slidably connected through a slider 12. When adjusting, the adjusting screw 11 is rotated, and the adjusting screw 11 rises and falls, driving the adjusting wedge 9 to rise and fall. The cross arm 1 at the rear end and the inner side of the fixed wedge 8 are respectively fixed with a fixing seat 5, and a mold closing mechanism 7 is installed between the two fixing seats 5.
[0012] The mold closing mechanism 7 includes a long swing arm 71, a rotating shaft arm 72, a drive arm 73, a mounting plate 74, a reducer 75, a servo motor 76, a base 77, a first rotating shaft 78, and a second rotating shaft 79. The servo motor 76 is connected to the reducer 75, which is mounted on the mounting plate 74. The bottom of the mounting plate 74 is fixed to the base 77, which is slidably connected to the guide post 6. The output shaft of the reducer 75 is connected to the drive arm 73. The rotating shaft arm 72 is coaxial with the center of the drive arm 73. Both ends of the rotating shaft arm 72 are connected to the long swing arm 71 via the first rotating shaft 78, which is mounted on the drive arm 73. The long swing arm 71 is connected to the fixed base 5 via the second rotating shaft 79. When the mold opens, the servo motor 76 drives the drive arm 73 and the rotating shaft arm 72 to move smoothly through the reducer 75. As the clock hand rotates, one end of each of the two long swing arms 71 rotates around the first rotating shaft 78, and the other end rotates around the second rotating shaft 79. The horizontal distance between the two long swing arms 71 shortens, causing the mounting plate 74 and the base 77 to move along the guide post 6, and simultaneously causing the rear template 4 to move backward to open the mold. When the mold is closed, the servo motor 76 drives the drive arm 73 and the rotating shaft arm 72 to rotate counterclockwise through the reducer 75. When the two long swing arms 71 rotate to a straight position, the mold closing force is at its maximum, causing the plastic product to be cut. At other times, the mold closing load is small, and the power output of the servo motor is adjusted to effectively reduce energy consumption. Moreover, since the mold closing device needs a pressure holding process at the end of the mold closing process, the mold closing force can be maintained when the two long swing arms 71 rotate to a straight position, thus eliminating the need for the motor to maintain high power, thereby further reducing energy consumption.
[0013] The working principle of this invention is as follows: When the servo motor 76 and the reducer 75 drive the two long swing arms 71 to rotate to a straight position, the mold closing state is reached. At this time, the distance between the front mold plate 3 and the rear mold plate 4 is fixed. In order to eliminate the change in mold thickness caused by mechanical deformation, the adjusting screw 11 is rotated. The adjusting screw 11 rises, which drives the adjusting wedge block 9 to rise, thereby adjusting the rear mold plate 4 to move slightly along the guide post 6 towards the front mold plate 3. The adjusting screw 11 falls, which drives the adjusting wedge block 9 to fall, thereby adjusting the rear mold plate 4 to move slightly backward along the guide post 6, thereby adjusting the mold thickness.
[0014] The foregoing has shown and described the basic principles and main features of the present invention, as well as its advantages. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.
Claims
1. An electric mold clamping device for a blow molding machine capable of adjusting mold thickness, characterized in that: It includes a cross arm, a fixing block, a front template, a rear template, a fixing seat, a guide post, a mold closing mechanism, a fixing wedge, an adjusting wedge, a fixing plate, and an adjusting screw. Two cross arms are fixed to the two ends of the guide post. The front template is fixed to the inner side of the front cross arm through the fixing block. The bottom of the front template is fixed to the guide post. The rear template is set on one side of the front template and is slidably connected to the guide post. A fixing plate is fixed to one side of the rear template. The adjusting screw is screwed to the fixing plate and rotatably connected to the adjusting wedge at the bottom. The inclined surface of the adjusting wedge is slidably connected to the inclined surface of the fixing wedge. Fixing seats are fixed to the inner sides of the rear cross arm and the fixing wedge, and a mold closing mechanism is installed between the two fixing seats.
2. The electric mold clamping device for a blow molding machine capable of adjusting mold thickness according to claim 1, characterized in that: The mold clamping mechanism includes a long swing arm, a rotating shaft arm, a drive arm, a mounting plate, a reducer, a servo motor, a base, a first rotating shaft, and a second rotating shaft. The servo motor is connected to the reducer, which is mounted on the mounting plate. The bottom of the mounting plate is fixed to the base, and the base is slidably connected to the guide post. The output shaft of the reducer is connected to the drive arm. The rotating shaft arm is coaxial with the center of the drive arm. Both ends of the rotating shaft arm are connected to the long swing arm via the first rotating shaft, which is mounted on the drive arm. The long swing arm is connected to the fixed base via the second rotating shaft.
3. The electric mold clamping device for a blow molding machine capable of adjusting mold thickness according to claim 1, characterized in that: The adjusting wedge is slidably connected to the fixed wedge via a slider.