A rubber trimming apparatus

Abstract

The utility model discloses a rubber trimming equipment, including work table and the mould pressing down unit of assembly on work table still include: pivot, at least three groups even setting on the lower mould unit and unloading drive unit of carousel, lower mould unit includes with fixed assembly on the mounting frame of carousel, rotatable assembly on the rotatable member of mounting frame far from the one side of pivot, can separate assembly on the rotatable member and can hold on the lower mould of mounting frame upper surface and with rotatable member fixed connection and with unloading drive unit matched unloading arm, the part of carousel with mounting frame corresponding is provided with the blanking window, and carousel every rotation can drive several groups lower mould unit to move to corresponding station, and the work of the work of unloading drive unit to the edge material on lower mould to the stamping trimming work of mould pressing down unit and the work of staff laying semi -product can be carried out simultaneously to unloading, thereby improve the work efficiency of stamping trimming, can guarantee the operation security of staff simultaneously.

Description

Technical Field

[0001] This utility model relates to the technical field of rubber product processing, specifically to a rubber trimming device. Background Technology

[0002] Under high pressure, the rubber compound flows into the tiny gaps in the mold cavity, forming a thin layer of flash. Trimming removes this flash and the connecting runners, resulting in individual, smooth-edged finished products. Common trimming methods include manual trimming, mechanical trimming, cryogenic trimming, and punching trimming. Punching trimming is used for products with simple structures, where a precision die can be used to punch out all the parts at once, completing the trimming simultaneously.

[0003] In the actual production process of rubber products, considering the mold manufacturing cost and product production efficiency, multiple injection cavities are opened on the mold to produce a semi-finished product containing multiple products at one time. Then, after the semi-finished product is stamped and trimmed, several products can be obtained at the same time.

[0004] Existing rubber stamping and trimming devices mainly consist of a vertically movable upper mold and a matching lower mold. The lower mold commonly has two usage methods. One method is to fix it directly below the upper mold and use it in conjunction with a pair of safety switches. The operator needs to remove the trimmed material before laying the semi-finished product on the lower mold, and touch the corresponding safety switches with both hands to start the equipment, thereby improving safety. The other method is to use the lower mold in conjunction with a horizontal moving mechanism. After stamping and trimming is completed, the horizontal moving mechanism moves the lower mold closer to the operator to facilitate the removal of trimmed material and the laying of new semi-finished products. This method also has a high level of safety and can prevent the operator's hands from being accidentally pressed.

[0005] Both of the above methods suffer from low efficiency. Laying semi-finished products requires inserting each protruding part of the semi-finished product into the stamping groove of the corresponding lower mold. Each individual protruding part becomes a product after stamping. When workers remove the edge material and lay semi-finished products, some time is taken up, which affects the overall work efficiency. Therefore, it is necessary to design a rubber trimming device. Utility Model Content

[0006] To address the aforementioned technical problems, the purpose of this utility model is to overcome the low efficiency of stamping and trimming of semi-finished rubber products in the prior art.

[0007] To achieve the above objectives, this utility model provides a rubber trimming device, including a workbench and a molding pressing unit mounted on the workbench, and further including: a vertical rotating shaft rotatably connected to the top of the workbench, a turntable fixedly connected to the upper end of the rotating shaft along the same axis, at least three sets of lower mold units evenly arranged along the circumference of the turntable and all mounted on the turntable, and an unloading drive unit mounted on the workbench and located next to the molding pressing unit. The lower mold unit includes a mounting frame fixedly mounted on a turntable, a rotating component rotatably mounted on the side of the mounting frame away from the rotating shaft, a lower mold detachably mounted on the rotating component and capable of pressing against the upper surface of the mounting frame, and an unloading arm fixedly connected to the rotating component and matched with the unloading drive unit. The turntable is provided with a unloading window at the corresponding part of the mounting frame.

[0008] Preferably, the workbench is provided with a blanking plate corresponding to the molding pressing unit and located below the corresponding blanking window; The worktable is equipped with several vertically sliding guide rods, at least one support block that is fixedly connected to the corresponding guide rod and can contact the lower surface of the turntable, a connecting frame that is fixedly connected to the lower end of several guide rods, and a vertical first drive push rod that is assembled inside the worktable and whose moving end is fixedly connected to the connecting frame.

[0009] Preferably, the upper surface of the mounting frame is recessed with a stepped groove that matches the lower mold.

[0010] Preferably, the end of the unloading arm away from the rotating part is bent upward to form a bent portion, and a strip-shaped through groove of the same length direction is provided through the unloading arm; The unloading drive unit includes a vertical mounting tube that is vertically slidably connected to the outer wall of the workbench, a rotating rod coaxially mounted on the mounting tube at its lower end, a horizontal limiting part fixedly connected to the upper end of the rotating rod, an elastic auxiliary mechanism elastically mounted on the upper end of the mounting tube and capable of contacting the lower surface of the unloading arm, and a corner cylinder mounted on the lower end of the mounting tube and whose rotating end is fixedly connected to the lower end of the rotating rod.

[0011] Preferably, the elastic auxiliary mechanism includes a sliding sleeve coaxially slidably sleeved on the rotating rod, a horizontal mounting plate fixedly connected to the lower end of the sliding sleeve, a mounting seat fixedly assembled on the upper end of the mounting tube, at least one limiting bolt that slides through the mounting plate and is fixedly connected to the mounting seat, and a spring sleeved on the rotating rod, wherein the two ends of the spring are in contact with the mounting seat and the mounting plate, respectively.

[0012] Preferably, the unloading drive unit further includes a vertical strip slide fixedly mounted on the outer wall of the workbench, a slider slidably mounted on the strip slide and fixedly connected to the mounting tube, and a vertical second drive push rod mounted on the workbench and whose moving end is fixedly connected to the slider.

[0013] Preferably, the lower mold is detachably assembled onto the rotating component by a number of mounting bolts, the rotating component has a protruding positioning part, and the lower mold has a positioning groove that matches the positioning part.

[0014] According to the above technical solution, the rubber trimming device provided by this utility model has the following beneficial effects during use: Each rotation of the turntable moves several sets of lower mold units to their corresponding workstations. The workers can simultaneously lay out semi-finished products, perform the stamping and trimming work of the die pressing unit, and unload the edge material from the lower mold using the unloading drive unit. This improves the efficiency of stamping and trimming while ensuring the safety of the workers.

[0015] Other features and advantages of this utility model will be described in detail in the following detailed description section; and all parts not covered in this utility model are the same as or can be implemented using existing technology. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a three-dimensional structural diagram of a rubber trimming device provided in this utility model; Figure 2 This is a three-dimensional structural diagram of the lower mold unit of a rubber trimming device provided in this utility model; Figure 3 This is a partial three-dimensional structural diagram of a rubber trimming device provided in this utility model; Figure 4 This utility model provides a rubber trimming device. Figure 1 Enlarged view of point A in the middle; Figure 5 This is a three-dimensional structural diagram of the lower mold unit and the unloading drive unit of a rubber trimming device provided in this utility model; Figure 6 This is a partial schematic diagram of the unloading drive unit of a rubber trimming device provided in this utility model.

[0017] Explanation of reference numerals in the attached figures 1. Workbench; 2. Turntable; 3. Mounting frame; 4. Rotating component; 5. Lower mold; 6. Unloading arm; 7. Unloading plate; 8. Guide rod; 9. Support block; 10. Bending part; 11. Strip groove; 12. Mounting tube; 13. Rotating rod; 14. Limiting part; 15. Corner cylinder; 16. Sliding sleeve; 17. Mounting plate; 18. Mounting seat; 19. Limiting bolt; 20. Spring; 21. Strip slide; 22. Slider; 23. Second drive push rod; 24. Positioning part. Detailed Implementation

[0018] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0019] In this utility model, unless otherwise stated, directional words such as "upper," "lower," "inner," and "outer" included in the terminology only represent the orientation of the term in its conventional use or are common terms understood by those skilled in the art, and should not be regarded as limitations on the term.

[0020] like Figure 1-6 As shown, a rubber trimming device includes a workbench 1 and a molding pressing unit mounted on the workbench 1. It also includes: a vertical rotating shaft rotatably connected to the top of the workbench 1, a turntable 2 fixedly connected to the upper end of the rotating shaft along the same axis, at least three sets of lower mold units evenly arranged along the circumference of the turntable 2 and all mounted on the turntable 2, and an unloading drive unit mounted on the workbench 1 and located next to the molding pressing unit. The lower mold unit includes a mounting frame 3 fixedly mounted on the turntable 2, a rotating component 4 rotatably mounted on the side of the mounting frame 3 away from the rotating shaft, a lower mold 5 detachably mounted on the rotating component 4 and able to press against the upper surface of the mounting frame 3, and an unloading arm 6 fixedly connected to the rotating component 4 and matched with the unloading drive unit. The turntable 2 is provided with a material unloading window at the corresponding part of the mounting frame 3.

[0021] In the above technical solution, the molding pressing unit is a mature existing technology, so it is not shown in the figure. The molding pressing unit usually includes a mounting frame, an upper mold that is slidably mounted on the mounting frame, and a third drive push rod for driving the upper mold to move vertically; the drive of the rotating shaft is also a mature existing technology, usually using a stepper motor to facilitate control of the rotation angle of the rotating shaft. Workbench 1 is divided into several stations according to different positions, including stamping station, unloading station, loading station and other positions; the die pressing unit is located in the stamping station, the unloading drive unit is located in the unloading station, and the loading operator is located in the loading station. The following describes the operation of one set of lower mold units as an example. The operator, positioned at the loading position, lays the rubber semi-finished product onto the lower mold 5 in front of them. Then, the turntable 2 rotates, moving the lower mold 5 with the rubber semi-finished product onto the stamping position. The mold pressing unit activates, cooperating with the lower mold 5 to press several pieces of the rubber semi-finished product downwards out of the lower mold 5. Several pieces will fall out from the unloading window. At this point, only the edge material remains on the lower mold 5. After the upper mold moves upwards to its original position, the turntable 2 rotates, moving the lower mold 5 to the unloading position. The unloading drive unit, cooperating with the unloading arm 6, drives the rotating component 4 to rotate, causing the lower mold 5 to rotate away from the mounting frame 3. As the tilt angle of the lower mold 5 increases, the edge material on the lower mold 5 falls off. Then, with the cooperation of the unloading drive unit and the unloading arm 6, the lower mold 5 returns to its original position. The turntable 2 continues to rotate, moving the lower mold 5 back to the loading position, forming a cycle. The equipment can automatically unload the edge material from the lower mold 5, and when the turntable 2 stops, the loading position, the stamping position and the unloading position can all work simultaneously, thereby improving the overall trimming efficiency and ensuring the safety of the operators.

[0022] In a preferred embodiment of the present invention, the workbench 1 is provided with a blanking plate 7 corresponding to the molding pressing unit and located below the corresponding blanking window; The worktable 1 is equipped with several vertically sliding guide rods 8 at the position of the molding pressing unit, at least one support block 9 fixedly connected to the corresponding guide rod 8 and in contact with the lower surface of the turntable 2, a connecting frame fixedly connected to the lower end of several guide rods 8, and a vertical first drive push rod assembled inside the worktable 1 and whose moving end is fixedly connected to the connecting frame.

[0023] In the above technical solution, after stamping, the first drive push rod will drive the guide rod 8 to move upward, and drive the support block 9 to move upward and contact the turntable 2, thereby providing support force for assembly. After the upper mold moves downward and contacts the lower mold 5, the lower mold 5 will bear pressure. The support force provided by the support block 9 can offset the pressure on the lower mold 5. After stamping, the product will fall downward onto the blanking plate 7. The first drive push rod is a mature existing technology, so it is not shown in the figure.

[0024] In a preferred embodiment of this utility model, the upper surface of the mounting frame 3 is recessed with a stepped groove that matches the lower mold 5.

[0025] In the above technical solution, the stepped groove can restrict the sliding of the lower mold 5 in the horizontal direction and improve the accuracy of the position of the lower mold 5.

[0026] In a preferred embodiment of the present invention, the end of the unloading arm 6 away from the rotating member 4 is bent upward to form a bent portion 10, and a strip-shaped through groove 11 of the same length direction is provided through the unloading arm 6. The unloading drive unit includes a vertical mounting tube 12 that is vertically slidably connected to the outer wall of the workbench 1, a rotating rod 13 coaxially mounted on the mounting tube 12 at its lower end, a horizontal limiting part 14 fixedly connected to the upper end of the rotating rod 13, an elastic auxiliary mechanism that is elastically mounted on the upper end of the mounting tube 12 and can contact the lower surface of the unloading arm 6, and a corner cylinder 15 that is mounted on the lower end of the mounting tube 12 and whose rotating end is fixedly connected to the lower end of the rotating rod 13.

[0027] In the above technical solution, when the lower mold 5 moves to the unloading position, the mounting tube 12 slides upward, driving the limiting part 14 to pass upward through the strip groove 11. Then, the corner cylinder 15 drives the rotating rod 13 to rotate, at which time the limiting part 14 rotates 90 degrees. Then, the mounting tube 12 slides downward, and after the limiting part 14 rotates 90 degrees, it can press on the unloading arm 6, thereby driving the rotating part 4 to rotate through the unloading arm 6, thereby driving the lower mold 5 to rotate. The function of the elastic auxiliary mechanism is to elastically contact the side of the unloading arm 6 away from the limiting part 14, so that the unloading arm 6 is always in contact with the limiting part 14. After the upper mold is in a vertical position, the limiting part 14 and the elastic auxiliary mechanism are in contact with the bending part 10. Then the mounting tube 12 moves upward and drives the rotating part 4 to return to its original position through the unloading arm 6, thereby driving the upper mold to return to its original position and contact the mounting frame 3. Then the corner cylinder 15 drives the rotating rod 13 to rotate 90 degrees, the mounting tube 12 slides downward, and the limiting part 14 can pass downward through the strip groove 11.

[0028] In a preferred embodiment of the present invention, the elastic auxiliary mechanism includes a sliding sleeve 16 coaxially slidably sleeved on the rotating rod 13, a horizontal mounting plate 17 fixedly connected to the lower end of the sliding sleeve 16, a mounting seat 18 fixedly assembled on the upper end of the mounting tube 12, at least one limiting bolt 19 slidingly passing through the mounting plate 17 and fixedly connected to the mounting seat 18, and a spring 20 sleeved on the rotating rod 13, wherein the two ends of the spring 20 are in contact with the mounting seat 18 and the mounting plate 17 respectively.

[0029] In the above technical solution, the limiting bolt 19 controls the maximum distance between the mounting plate 17 and the mounting base 18, thereby controlling the minimum distance between the limiting part 14 and the upper end of the sliding sleeve 16, so that the minimum distance between the limiting part 14 and the sliding sleeve 16 is adapted to the thickness of the unloading arm 6. As the rotating rod 13 slides downward, the unloading arm 6 gradually tilts. At this time, the unloading arm 6 will squeeze the sliding sleeve 16, which will increase the distance between the sliding sleeve 16 and the limiting part 14. When the lower mold 5 rotates to a vertical position, the sliding sleeve 16 can also prevent the lower mold 5 from rotating further. A pulley can be fitted on the top of the sleeve 16 to reduce the frictional resistance between the sleeve and the unloading material.

[0030] In a preferred embodiment of the present invention, the unloading drive unit further includes a vertical strip slide 21 fixedly mounted on the outer wall of the workbench 1, a slider 22 slidably mounted on the strip slide 21 and fixedly connected to the mounting tube 12, and a vertical second drive push rod 23 mounted on the workbench 1 and whose moving end is fixedly connected to the slider 22.

[0031] In the above technical solution, the second drive push rod 23 drives the slider 22 to slide vertically on the strip slide 21, thereby driving the mounting tube 12 to move vertically.

[0032] In a preferred embodiment of this utility model, the lower mold 5 is detachably assembled onto the rotating component 4 by a number of mounting bolts. The rotating component 4 is provided with a protruding positioning part 24, and the lower mold 5 is provided with a positioning groove that matches the positioning part 24.

[0033] In the above technical solution, when different rubber semi-finished products need to be repaired, several mounting bolts are loosened and removed. The rotating part 4 and the lower mold 5 can be quickly positioned by the positioning part 24 and the positioning element. Then, the rotating part 4 and the lower mold 5 are fixed together by several mounting bolts. The operation of replacing the lower mold 5 is simple and convenient.

[0034] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0035] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, this utility model will not describe the various possible combinations separately.

[0036] Furthermore, various different embodiments of this utility model can be combined in any way, as long as they do not violate the spirit of this utility model, they should also be regarded as the content disclosed by this utility model.

Claims

1. A rubber trimming device, comprising a worktable (1) and a molding pressing unit mounted on the worktable (1), characterized in that, It also includes: a vertical rotating shaft rotatably connected to the top of the worktable (1), a turntable (2) fixedly connected to the upper end of the rotating shaft, at least three sets of lower mold units evenly arranged along the circumference of the turntable (2) and all assembled on the turntable (2), and an unloading drive unit assembled on the worktable (1) and located next to the molding pressing unit; The lower mold unit includes a mounting frame (3) fixedly mounted on the turntable (2), a rotating component (4) rotatably mounted on the side of the mounting frame (3) away from the rotating shaft, a lower mold (5) detachably mounted on the rotating component (4) and able to press against the upper surface of the mounting frame (3), and an unloading arm (6) fixedly connected to the rotating component (4) and matched with the unloading drive unit. The turntable (2) is provided with a material unloading window at the part corresponding to the mounting frame (3).

2. The rubber trimming equipment according to claim 1, characterized in that, The workbench (1) is provided with a blanking plate (7) that corresponds to the molding pressing unit and is located below the corresponding blanking window. The worktable (1) is equipped with several vertically sliding guide rods (8) at the position of the molding pressing unit, at least one support block (9) fixedly connected to the corresponding guide rod (8) and able to contact the lower surface of the turntable (2), a connecting frame fixedly connected to the lower end of several guide rods (8), and a vertical first drive push rod assembled inside the worktable (1) and whose moving end is fixedly connected to the connecting frame.

3. The rubber trimming equipment according to claim 1, characterized in that, The upper surface of the mounting frame (3) is recessed with a stepped groove that matches the lower mold (5).

4. The rubber trimming device according to claim 1, characterized in that, The end of the unloading arm (6) away from the rotating part (4) is bent upward to form a bent part (10), and a strip-shaped through groove (11) of the same length direction is provided through the unloading arm (6). The unloading drive unit includes a vertical mounting tube (12) that is vertically slidably connected to the outer wall of the workbench (1), a rotating rod (13) coaxially mounted on the mounting tube (12) at its lower end, a horizontal limiting part (14) fixedly connected to the upper end of the rotating rod (13), an elastic auxiliary mechanism that is elastically mounted on the upper end of the mounting tube (12) and can contact the lower surface of the unloading arm (6), and a corner cylinder (15) mounted on the lower end of the mounting tube (12) and whose rotating end is fixedly connected to the lower end of the rotating rod (13).

5. The rubber trimming equipment according to claim 4, characterized in that, The elastic auxiliary mechanism includes a sliding sleeve (16) coaxially slidably sleeved on the rotating rod (13), a horizontal mounting plate (17) fixedly connected to the lower end of the sliding sleeve (16), a mounting seat (18) fixedly assembled on the upper end of the mounting tube (12), at least one limiting bolt (19) sliding through the mounting plate (17) and fixedly connected to the mounting seat (18), and a spring (20) sleeved on the rotating rod (13). The two ends of the spring (20) are in contact with the mounting seat (18) and the mounting plate (17) respectively.

6. The rubber trimming equipment according to claim 4, characterized in that, The unloading drive unit also includes a vertical strip slide (21) fixedly mounted on the outer wall of the workbench (1), a slider (22) slidably mounted on the strip slide (21) and fixedly connected to the mounting tube (12), and a vertical second drive push rod (23) mounted on the workbench (1) and whose moving end is fixedly connected to the slider (22).

7. The rubber trimming device according to claim 1, characterized in that, The lower mold (5) is detachably mounted on the rotating part (4) by a number of mounting bolts. The rotating part (4) has a protruding positioning part (24), and the lower mold (5) has a positioning groove that matches the positioning part (24).

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