Automobile rubber bushing production die with adjustable stamping force

Abstract

The utility model discloses an automobile rubber bushing production die with adjustable stamping force, and relates to the technical field of bushing production dies, the automobile rubber bushing production die comprises a base, an upper die and a stamping head, the top surface of the base is also provided with a lower die corresponding to the upper die, an output shaft of a cylinder penetrates into the inner side of a bearing frame, and a connecting rod is fixed between the output shaft of the cylinder and the upper die; a movable cavity is formed in the inner wall of the connecting rod, a push-and-pull component used for achieving lifting adjustment of the stamping head is arranged in the movable cavity, a control box is fixed to the outer side of the connecting rod, a control component used for providing power for the push-and-pull component is arranged in the control box, a containing groove is formed in the bottom face of the upper die, and the stamping head is arranged in the containing groove in a sliding mode; through the arrangement of the push-and-pull part, if the size of rubber raw materials placed in the lower die cavity is too small, the movable range of the stamping head in the lower die cavity can be effectively adjusted only by using the push-and-pull part to act on the stamping head to lift and slide in the containing groove, so that the practicability of the device is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of bushing production molds, in particular to an automobile rubber bushing production mold with adjustable punching force. Background Art

[0002] Traditional automotive rubber bushing production molds require pressure when closing the mold. When the pressure of the rubber material in the mold is too low, the pressure is dispersed, which can easily cause uneven pressure on the rubber parts. When the pressure of the rubber material in the mold is too high, the pressure is concentrated, which can easily cause damage to the mold. Long-term production will cause the mold to be damaged, thereby reducing production efficiency and increasing production costs.

[0003] In the prior art, the patent announcement number CN207954451U is a mold for producing automobile rubber bushings with adjustable punching pressure. The above patent adjusts the punching pressure to prevent the pressure from being dispersed when the rubber material in the mold cavity is under too low pressure, causing uneven pressure on the rubber parts, and to prevent the pressure from being concentrated when the rubber material in the mold cavity is under too high pressure, which easily causes damage to the mold cavity, thereby improving production efficiency and reducing production costs.

[0004] However, in reality, the size of the upper die punch in the above patent is fixed, so that the punch can only extend within a fixed range in the lower die cavity. Once the height of the rubber material placed in the lower die cavity is too small, it is very likely that the punch cannot contact the rubber material after the upper and lower dies are closed, thereby seriously affecting the stamping effect of the rubber material and reducing the accuracy of the pressure test. Utility Model Content

[0005] In order to solve the above technical problems, a production mold for automobile rubber bushings with adjustable stamping force is provided, which solves the problem that the size of the upper die punching head is fixed in the prior art, so that the punching head can only extend within a fixed range in the lower die cavity. Once the height of the rubber material placed in the lower die cavity is too small, it is very likely that the punching head will still be unable to contact the rubber material after the upper and lower dies are closed, thereby seriously affecting the stamping effect of the rubber material and reducing the accuracy of the pressure test.

[0006] To achieve the above purpose, the technical solution adopted by the utility model is: a production mold for automobile rubber bushings with adjustable punching force, comprising a base, a carrier frame fixed on the top surface of the base in an inverted U shape, an upper die slidably arranged in the inner side of the carrier frame, and a punch head arranged at the bottom of the upper die, a lower die corresponding to the upper die is also arranged on the top surface of the base, a pressure sensor is fixedly embedded on the inner wall of the bottom end of the lower die cavity, a PLC controller electrically connected to the pressure sensor is installed on one side wall of the carrier frame, a cylinder is installed on the top of the carrier frame, the output shaft of the cylinder penetrates the inner side of the carrier frame and a connecting rod is fixed between the upper die, an active cavity is arranged in the inner wall of the connecting rod, a push-pull component for lifting and lowering the punch head is arranged in the active cavity, a control box is fixed on the outer side of the connecting rod, and a control component for providing power to the push-pull component is arranged in the control box, and a receiving groove is opened on the bottom surface of the upper die, and the punch head is slidably arranged in the receiving groove.

[0007] Preferably, the push-pull component includes an internal threaded tube vertically rotatably arranged on the inner wall of the top end of the movable cavity, an external threaded block threadedly connected to the inner wall of the internal threaded tube, and a rectangular rod vertically fixed to the external threaded block, and the end of the rectangular rod is inserted into the accommodating groove and fixedly connected to the punching head.

[0008] Preferably, the control component includes a transmission rod transversely arranged in the control box, one end of the transmission rod penetrates into the movable cavity and is fixed with a second bevel gear, a first bevel gear meshing with the second bevel gear is tightly sleeved on the barrel of the internal threaded tube, and the other end of the second bevel gear rotates to pass through the control box and is tightly sleeved with a handwheel.

[0009] Preferably, the transmission rod is located on the rod body inside the control box and is tightly sleeved with a locking gear, a card plate engaged with the locking gear is slidably provided on the inner side of the control box, a pull rod is provided below the control box, one end of the pull rod is inserted into the control box and fixed to the card plate, a spring is sleeved on the rod body of the pull rod, one end of the spring is fixedly connected to the card plate, and the other end of the spring is fixedly connected to the inner wall of the bottom end of the control box.

[0010] Compared with the prior art, the advantages of the utility model are:

[0011] By setting the push-pull component, if the size of the rubber raw material placed in the lower mold cavity is too small, the push-pull component is only needed to cause the punch head to rise and fall and slide in the accommodating groove, so as to effectively adjust the movable range of the punch head in the lower mold cavity, thereby enhancing the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 It is a schematic diagram of the partial internal structure of the utility model;

[0014] Figure 3 For this utility model Figure 2 Schematic diagram of the structure at point A in the middle.

[0015] The numbers in the figure are:

[0016] 1. Base; 2. Carrying frame; 3. Lower die; 4. Pressure sensor; 5. Upper die; 6. Punch head; 7. Connecting rod; 8. Cylinder; 9. Internal threaded pipe; 10. External threaded block; 11. Rectangular rod; 12. Control box; 13. Transmission rod; 14. First bevel gear; 15. Second bevel gear; 16. Locking gear; 17. Card plate; 18. Pull rod; 19. Spring; 20. PLC controller. DETAILED DESCRIPTION

[0017] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0018] Reference Figure 1-3 As shown, a mold for producing automobile rubber bushings with adjustable punching force comprises a base 1, a carrier frame 2 fixed on the top surface of the base 1 in an inverted U shape, an upper mold 5 slidably arranged in the inner side of the carrier frame 2, and a punch head 6 arranged at the bottom of the upper mold 5, a lower mold 3 corresponding to the upper mold 5 is also arranged on the top surface of the base 1, a pressure sensor 4 is fixedly embedded on the inner wall of the bottom end of the mold cavity of the lower mold 3, a PLC controller 20 electrically connected to the pressure sensor 4 is installed on one side wall of the carrier frame 2, a cylinder 8 is installed on the top of the carrier frame 2, and the output shaft of the cylinder 8 penetrates into the inner side of the carrier frame 2 and a connecting rod 7 is fixed between the upper mold 5 and the upper mold 5;

[0019] When in use, the rubber material to be punched is placed in the inner cavity of the lower mold 3 in advance, and then the cylinder 8 is turned on. The telescopic rod of the cylinder 8 can drive the connecting rod 7, the upper mold 5 and the punch head 6 to move downward as a whole, so that the punch head 6 penetrates into the mold cavity of the lower mold 3 to punch the rubber material. During this period, the pressure sensor 4 can sense the pressure and transmit the pressure information to the PLC controller 20. The PLC controller 20 controls the cylinder 8 to telescope and adjust the height of the upper mold 5 and the punch head 6, and adjusts the punching force to prevent the rubber material in the lower mold 3 from being under pressure too low, resulting in pressure dispersion and uneven pressure on the rubber parts, and to prevent the rubber material in the lower mold 3 from being under pressure too high, resulting in pressure concentration and easy damage to the lower mold 3, thereby improving production efficiency and reducing production costs.

[0020] However, in practice, the size of the punch head 6 in the above patent is fixed, so that the punch head 6 can only extend within a fixed range in the cavity of the lower die 3. Once the height of the rubber material placed in the cavity of the lower die 3 is too small, it is very likely that the punch head 6 will still be unable to contact the rubber material after the upper die 5 and the lower die 3 are closed, thereby seriously affecting the stamping effect of the rubber material and reducing the pressure test accuracy.

[0021] For this purpose, refer to Figure 2 and Figure 3 As shown, it is worth noting that an active cavity is provided in the inner wall of the connecting rod 7, and a push-pull component for lifting and lowering the punch head 6 is provided in the active cavity. A control box 12 is fixed to the outer side of the connecting rod 7, and a control component for providing power to the push-pull component is provided in the control box 12. A receiving groove is provided on the bottom surface of the upper mold 5, and the punch head 6 is slidably provided in the receiving groove;

[0022] By setting the push-pull component, if the size of the rubber raw material placed in the cavity of the lower mold 3 is too small, the movable range of the punch head 6 in the cavity of the lower mold 3 can be effectively adjusted by using the push-pull component to cause the punch head 6 to rise and fall and slide in the accommodating groove, thereby enhancing the practicality of the device.

[0023] Further, refer to Figure 2 and Figure 3 As shown, it is worth noting that the push-pull component includes an internal threaded tube 9 vertically rotatably arranged on the inner wall of the top end of the active cavity, an external threaded block 10 threadedly connected to the inner wall of the internal threaded tube 9, and a rectangular rod 11 vertically fixed to the external threaded block 10, and the end of the rectangular rod 11 penetrates into the receiving groove and is fixedly connected to the punch head 6;

[0024] The control component includes a transmission rod 13 which is transversely arranged in the control box 12. One end of the transmission rod 13 penetrates into the movable cavity and is fixed with a second bevel gear 15. A first bevel gear 14 meshing with the second bevel gear 15 is tightly sleeved on the body of the internal threaded tube 9. The other end of the second bevel gear 15 rotates out of the control box 12 and is tightly sleeved with a hand wheel.

[0025] By turning the knob handwheel, the transmission rod 13 can act on the second bevel gear 15 to engage with the first bevel gear 14 during the rotation process, providing rotational force for the internal threaded tube 9, so that the external thread block 10 slides inside the internal threaded tube 9 under the threaded structure, and the rectangular rod 11 continuously retracts in the accommodating groove to push and pull the punch head 6, thereby adjusting the lifting and lowering of the punch head 6.

[0026] Further, refer to Figure 3As shown, it is worth noting that a locking gear 16 is tightly sleeved on the rod body of the transmission rod 13 located on the inner side of the control box 12, a card plate 17 engaged with the locking gear 16 is slidably provided on the inner side of the control box 12, a pull rod 18 is provided below the control box 12, one end of the pull rod 18 penetrates into the control box 12 and is fixed to the card plate 17, a spring 19 is sleeved on the rod body of the pull rod 18, one end of the spring 19 is fixedly connected to the card plate 17, and the other end of the spring 19 is fixedly connected to the inner wall of the bottom end of the control box 12;

[0027] When it is necessary to adjust the lifting and lowering of the punch head 6, the pull rod 18 can be manually pulled down in advance to separate the card plate 17 from the locking gear 16, thereby releasing the fixation of the transmission rod 13 and rotating the transmission rod 13, which is convenient for adjusting the lifting and lowering activities of the punch head 6. During this period, when the card plate 17 and the locking gear 16 separate and slide, the card plate 17 can compress the spring 19 to deform. Therefore, after the punch head 6 is adjusted, the pull on the pull rod 18 is released, and the card plate 17 can be quickly reset under the elastic force of the spring 19, and re-engage with the locking gear 16 to lock the transmission rod 13, thereby ensuring the stability of the punch head 6 after the activity adjustment.

[0028] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A mold for producing automotive rubber bushings with adjustable punching force, comprising a base (1), a support frame (2) fixed on the top surface of the base (1) in an inverted U-shape, an upper mold (5) slidably arranged on the inner side of the support frame (2), and a punch head (6) arranged at the bottom of the upper mold (5), a lower mold (3) corresponding to the upper mold (5) is also arranged on the top surface of the base (1), a pressure sensor (4) is fixedly embedded on the inner wall of the bottom end of the mold cavity of the lower mold (3), and a PLC controller (20) electrically connected to the pressure sensor (4) is installed on one side wall of the support frame (2), characterized in that: A cylinder (8) is installed on the top of the support frame (2), the output shaft of the cylinder (8) penetrates into the inner side of the support frame (2) and a connecting rod (7) is fixed between the cylinder (8) and the upper die (5), an active cavity is arranged in the inner wall of the connecting rod (7), a push-pull component for lifting and lowering the punch head (6) is arranged in the active cavity, a control box (12) is fixed on the outer side of the connecting rod (7), a control component for providing power to the push-pull component is arranged in the control box (12), and a receiving groove is arranged on the bottom surface of the upper die (5), and the punch head (6) is slidably arranged in the receiving groove.

2. The automotive rubber bushing production mold with adjustable punching force according to claim 1, characterized in that: The push-pull component comprises an internal threaded tube (9) vertically rotatably arranged on the inner wall of the top end of the movable cavity, an external threaded block (10) threadedly connected to the inner wall of the internal threaded tube (9), and a rectangular rod (11) vertically fixed to the external threaded block (10), wherein the end of the rectangular rod (11) penetrates into the receiving groove and is fixedly connected to the punch head (6).

3. The automotive rubber bushing production mold with adjustable punching force according to claim 2, characterized in that: The control component comprises a transmission rod (13) transversely arranged in the control box (12), one end of the transmission rod (13) penetrates into the movable cavity and is fixed with a second bevel gear (15), a first bevel gear (14) meshing with the second bevel gear (15) is tightly sleeved on the body of the internal threaded tube (9), and the other end of the second bevel gear (15) rotates to pass through the control box (12) and is tightly sleeved with a hand wheel.

4. The automotive rubber bushing production mold with adjustable punching force according to claim 3 is characterized in that: The transmission rod (13) is located on the rod body inside the control box (12) and is tightly sleeved with a locking gear (16); a card plate (17) is slidably arranged on the inner side of the control box (12) and is engaged with the locking gear (16); a pull rod (18) is arranged below the control box (12); one end of the pull rod (18) penetrates into the control box (12) and is fixed to the card plate (17); a spring (19) is sleeved on the rod body of the pull rod (18); one end of the spring (19) is fixedly connected to the card plate (17), and the other end of the spring (19) is fixedly connected to the inner wall of the bottom end of the control box (12).

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