Headrest rod tooth forming machine

Abstract

The present invention discloses a headrest rod tooth forming machine, wherein two support plates are vertically fixed on a machine base, the two support plates are parallel to each other, an upper die seat is slidably connected to the two support plates, a variable frequency motor is fixed on one side of the ends of the two support plates in the length direction, and the variable frequency motor drives the upper die seat to reciprocate horizontally on the two support plates through a crank connecting rod mechanism; a knife row is arranged on the lower surface of the upper die seat, and a plurality of rollers are rotatably connected to the knife row; a vertical lifting mechanism is arranged between the two support plates, the lower surface of the vertical lifting mechanism is connected to the machine base, the upper surface of the vertical lifting mechanism is connected to the fixture seat, the fixture seat is located below the knife row, and the vertical lifting mechanism is used to drive the fixture seat to reciprocate in the vertical direction. The present invention is to solve the problem of low workpiece strength caused by the material removal processing method of the headrest rod slot of the automobile seat. Technical effect: the toothed groove is obtained by roller extrusion, the strength of the headrest rod is enhanced, the fixture is unique, and the product diameter is not deformed.

Description

Technical Field

[0001] The embodiment of the invention relates to the technical field of automobile seat headrest rod processing equipment, and in particular to a headrest rod tooth forming machine. Background Art

[0002] At present, in the manufacturing process of the headrest rod of the automobile seat, it is necessary to perform tooth processing on the headrest rod, that is, to process the outer wall of a steel pipe with a tooth groove of a certain angle and depth according to the requirements of the production process. The existing tooth processing of the headrest rod is mainly done by milling the teeth with a forming milling cutter, or by stamping the headrest rod with a special mold on a punch press. The tooth milling process is not only costly, but also requires strict operating skills of the operator, and has low production efficiency. In addition, the tooth groove is obtained by removing material, which reduces the strength of the tooth groove of the headrest rod and is prone to fracture and cracks. Summary of the invention

[0003] To this end, an embodiment of the present invention provides a headrest rod tooth forming machine to solve the problem of reduced workpiece strength caused by material removal processing in the automobile seat headrest rod slot in the prior art.

[0004] In order to achieve the above objectives, the embodiments of the present invention provide the following technical solutions:

[0005] According to the first aspect of an embodiment of the present invention, a headrest rod tooth forming machine is provided, which is used for processing tooth grooves on a headrest rod of a car seat, and comprises: a machine base, a vertical lifting mechanism, a fixture seat, an upper die seat, two support plates and a variable frequency motor; the two support plates are vertically fixed on the machine base, the two support plates are parallel to each other, the upper die seat is slidably connected to the two support plates, the variable frequency motor is fixed on one side of the ends of the two support plates in the length direction, and the variable frequency motor drives the upper die seat to reciprocate horizontally on the two support plates through a crank-connecting rod mechanism; a knife row is provided on the lower surface of the upper die seat, and a plurality of rollers are rotatably connected to the knife row; the vertical lifting mechanism is provided between the two support plates, the lower surface of the vertical lifting mechanism is connected to the machine base, the upper surface of the vertical lifting mechanism is connected to the fixture seat, the fixture seat is located below the knife row, and the vertical lifting mechanism is used to drive the fixture seat to reciprocate in the vertical direction.

[0006] Furthermore, the vertical lifting mechanism includes: a first slider, a first slide rail, a lower slide seat, a second slide rail, a second slider, an upper slide seat, a fixed baffle, an electric push rod and an electric push rod seat; a plurality of first slide rails are fixed on the machine base in parallel with each other, and the plurality of first slide rails are located between two support plates; a plurality of first sliders are fixed on the lower surface of the lower slide seat and are slidably connected to the plurality of first slide rails through the plurality of first sliders; the upper surface of the lower slide seat is an inclined surface, a plurality of second slide rails are fixed on the upper surface of the lower slide seat, and the lower surface of the upper slide seat is parallel to the upper surface of the lower slide seat An inclined surface, a plurality of second sliders are fixed on the lower surface of the upper slide seat and are slidably connected to a plurality of second slide rails through the plurality of second sliders; a fixed baffle is provided on one side of the end of the upper slide seat close to the frequency conversion motor in the reciprocating direction, the fixed baffle is vertically fixed on the machine base, and the upper slide seat is slidably connected to the vertical surface of the fixed baffle; the end of the lower slide seat away from the fixed baffle in the reciprocating direction is connected to the push rod end of the electric push rod, the motor end of the electric push rod is fixed on the electric push rod seat, and the electric push rod seat is fixed on the machine base; the upper surface of the upper slide seat is fixedly connected to the lower surface of the clamp seat.

[0007] Furthermore, the fixture seat includes: a fixture seat plate, a workpiece fixture and two clamping cylinders; the lower surface of the fixture seat plate is fixedly connected to the upper surface of the upper slide seat; the upper surface of the fixture seat plate is fixedly connected to the first mounting seat, the second mounting seat, the third mounting seat and the fixture baffle, the first mounting seat, the second mounting seat and the third mounting seat are all L-shaped, the first mounting seat, the second mounting seat and the third mounting seat are arranged in sequence, an L-shaped end face of the first mounting seat, the second mounting seat and the third mounting seat is located on the same vertical plane, and the fixture baffle is arranged at intervals on the vertical plane. On one side of the straight surface, a workpiece clamp is arranged between the vertical surface and the clamp baffle; the lower surface of the workpiece clamp abuts against the clamp seat plate, and the upper surface of the workpiece clamp is provided with a long semicircular groove, and the length direction of the semicircular groove is perpendicular to the reciprocating motion direction of the upper die seat; the two clamping cylinders are respectively fixed on the first mounting seat and the second mounting seat and on the second mounting seat and the third mounting seat, and the push rod ends of the two clamping cylinders respectively pass through the gap between the first mounting seat and the second mounting seat and the gap between the second mounting seat and the third mounting seat and then abut against the workpiece clamp.

[0008] Furthermore, the fixture seat also includes a positioning cylinder, a cylinder seat, a positioning joint and a positioning block; the cylinder body of the positioning cylinder is fixed to the fixture seat plate through the cylinder seat, the push rod end of the positioning cylinder is fixed with a positioning joint, and the positioning block is fixed on the positioning joint. The positioning block is a long strip structure, and one vertical side of the positioning block is inclined to the other vertical side, and one vertical side of the positioning block abuts against the push rod ends of the two clamping cylinders, and the other inclined vertical side of the positioning block abuts against the workpiece fixture.

[0009] Furthermore, feed ports are respectively provided on the two support plates, the two feed ports are arranged opposite to each other, the extension direction of the two ends of the semicircular groove passes through the two feed ports, and the cylinder body of the positioning cylinder passes through one feed port.

[0010] Furthermore, the upper mold base includes an upper mold base plate, multiple gaskets and multiple third sliders; the number of gaskets is the same as the number of third sliders, the upper surfaces of the multiple third sliders are fixedly connected to the lower surface of the upper mold base plate, a gasket is arranged between each third slider and the lower surface of the upper mold base plate, and the multiple third sliders are divided into two groups and are slidably connected to the two support plates respectively.

[0011] Furthermore, it also includes two third slide rails and two fourth slide rails; a third slide rail is fixed on one side of the feed port on each support plate, and a fourth slide rail is fixed on the other side of the feed port on each support plate, and the third slide rail and the fourth slide rail are both slidably connected to the upper mold base plate through a third slider.

[0012] Furthermore, it also includes a tool shaft, a plurality of roller cutter grooves are arranged at intervals on the tool row, a plurality of roller cutters are arranged in the plurality of roller cutter grooves respectively and one by one, a plurality of roller cutters are all fixed on the tool shaft, the tool shaft and the tool row are rotatably connected, and the axis of the tool shaft is perpendicular to the reciprocating movement direction of the upper mold seat.

[0013] Furthermore, the crank-connecting rod mechanism includes an eccentric wheel and a transmission arm; the eccentric wheel is fixed on the output shaft of the variable frequency motor, an eccentric protrusion is provided at the eccentric position of the center of the eccentric wheel, the eccentric protrusion is rotationally connected to one end of the transmission arm, and the other end of the transmission arm is rotationally connected to the lower surface of the upper mold base.

[0014] Furthermore, it also includes a workpiece positioning accessory and a motor cover; one end of the workpiece positioning accessory is fixed on the side wall of the support plate, and the other end of the workpiece positioning accessory is bent and extended above the upper surface of the upper mold base, and the motor cover is sleeved on the outer peripheral side of the variable frequency motor output shaft and the crank connecting rod mechanism.

[0015] The present invention has the following advantages: through the present invention, the toothed groove is obtained by roller extrusion molding. Since a processing method without removing materials is adopted, the mechanical strength of the headrest rod is significantly enhanced. The unique fixture seat design ensures that the diameter of the headrest rod is not easy to deform. The machine maintenance cost is low and the operation is simple. No coolant is required during the processing, which reduces harm to the human body and pollution to the environment. The present invention does not require a mold and can process the product through simple fixture debugging, which greatly reduces the enterprise cost and machine development time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0017] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0018] Figure 1 An overall structural diagram of a headrest rod tooth forming machine provided for some embodiments of the present invention.

[0019] Figure 2 An exploded view of the overall structure of a headrest rod tooth forming machine provided in some embodiments of the present invention.

[0020] Figure 3 A structural diagram of a workpiece to be processed by a headrest rod tooth forming machine provided in some embodiments of the present invention.

[0021] Figure 4 An overall structural diagram of a headrest rod tooth forming machine without a processing baffle provided in some embodiments of the present invention.

[0022] Figure 5 for Figure 4 A front view of a headrest rod tooth forming machine is provided.

[0023] Figure 6 for Figure 4 A top view of a headrest rod tooth forming machine is provided.

[0024] Figure 7 An overall structural diagram of a headrest rod tooth forming machine without an upper die seat and a fixture seat provided in some embodiments of the present invention.

[0025] Figure 8 for Figure 7 A front view of a headrest rod tooth forming machine is provided.

[0026] Fig. 9 for Figure 7 A top view of a headrest rod tooth forming machine is provided.

[0027] Fig.10A structural diagram of an upper die base of a headrest rod tooth forming machine provided in some embodiments of the present invention.

[0028] Fig.11 for Fig.10 An exploded view of an upper die base of a headrest rod tooth forming machine is provided.

[0029] Fig.12 A structural diagram of a fixture seat of a headrest rod tooth forming machine provided in some embodiments of the present invention.

[0030] Fig.13 for Fig.12 An exploded view of a fixture seat of a headrest rod tooth forming machine is provided.

[0031] In the figure: 1, machine base, 2, knife row, 3, third slide block, 4, support plate, 5, upper die base plate, 6, feed port, 7, workpiece positioning accessories, 8, third slide rail, 9, transmission arm, 10, frequency conversion motor, 11, eccentric wheel, 12, motor cover, 13, positioning cylinder, 14, fixed baffle, 15, upper slide seat, 16, second slide block, 17, positioning block, 18, workpiece fixture, 19, positioning joint, 20, clamping cylinder, 21, fixture seat Plate, 22, cylinder seat, 23, fourth slide rail, 24, electric push rod seat, 25, first slide rail, 26, lower slide seat, 27, electric push rod, 28, first slider, 29, hob, 30, knife shaft, 31, second slide rail, 32, gasket, 33, semicircular groove, 34, first mounting seat, 35, second mounting seat, 36, third mounting seat, 37, fixture baffle, 38, car seat headrest rod, 39, first tooth groove, 40, second tooth groove. DETAILED DESCRIPTION

[0032] The following is a description of the implementation of the present invention by specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Example 1

[0034] like Figure 1 and Figure 2As shown, a headrest rod tooth forming machine in this embodiment is used to process the tooth grooves on the headrest rod 38 of a car seat, including: a machine base 1, a vertical lifting mechanism, a fixture base, an upper die base, two support plates 4 and a variable frequency motor 10; wherein, a PLC controller or a single-chip microcomputer can be arranged in the machine base 1, and the vertical lifting mechanism and the operation of the variable frequency motor 10 are controlled by the PLC controller, wherein the circuits adopted are all mature control circuits in the prior art, and the vertical lifting mechanism can be realized by using a simple cylinder, a hydraulic cylinder, an electric push rod or a nut screw pair driven by a motor. In addition, the vertical lifting mechanism designed in the subsequent embodiments of the present invention can also be adopted, the support plate 4 is a metal flat plate, and the two support plates 4 are vertically fixed on the machine base 1 by bolt connection, the two support plates 4 are parallel to each other, and the upper die base is slidably connected to the two support plates 4. The sliding connection method can be realized by a linear slide rail, or a slide rail can be set on the support plate 4, and a slide groove is opened on the lower surface of the upper die base. The variable frequency motor 10 is fixed on the two support plates 4. On one side of the end in the length direction, the variable frequency motor 10 drives the upper die seat to reciprocate horizontally on the two support plates 4 through a crank-connecting rod mechanism, and the direction of the horizontal reciprocating motion is the same as the length direction of the support plate 4, wherein the crank-connecting rod mechanism can be a combination of an eccentric wheel 11 and a connecting rod, or can be realized by multiple connecting rod mechanisms; a cutter row 2 is provided on the lower surface of the upper die seat, and a plurality of hobs 29 are rotatably connected to the cutter row 2, and the hobs 29 are a rotating body structure, and the outer contour of the hobs 29 is determined according to the cross-sectional shape of the tooth groove required for the headrest rod 38 of the car seat to be processed; a vertical lifting mechanism is arranged between the two support plates 4, the lower surface of the vertical lifting mechanism is connected to the machine base 1, and the upper surface of the vertical lifting mechanism is connected to the fixture seat, and the fixture seat is located below the cutter row 2, and the vertical lifting mechanism is used to drive the fixture seat to reciprocate in the vertical direction, and the limit position of the upward movement of the fixture seat is located below the upper die seat, and the gap between the limit position of the upward movement of the fixture seat and the hobs 29 on the cutter row 2 is just the diameter of the workpiece to be processed minus the depth of the tooth groove.

[0035] like Figure 3 As shown, a workpiece processed by a headrest rod tooth forming machine in this embodiment is a car seat headrest rod 38, which is formed by bending a steel pipe. A first tooth groove 39 and three second tooth grooves 40 need to be processed on the outer side wall of a straight section of the steel pipe of the car seat headrest rod 38. The first tooth groove 39 is a groove with a rectangular cross-section, and the second tooth groove 40 is a groove with a cross-section of a quarter arc. Correspondingly, in an optional implementation, a hob 29 corresponding to the cross-sectional shape of the first tooth groove 39 and three hobs 29 corresponding to the cross-sectional shape of the second tooth groove 40 are rotatably connected to the cutter row 2.

[0036] The working process of this embodiment is: fix the workpiece on the fixture seat, start the machine, the frequency conversion motor 10 drives the upper die seat to reciprocate on the two support plates 4, the vertical lifting mechanism drives the fixture seat to gradually move upward, and the cutter row 2 gradually squeezes the tube wall of the workpiece with the reciprocating motion of the upper die seat. After multiple reciprocating motions of the upper die seat, the hob 29 squeezes and rolls on the tube wall of the workpiece multiple times, thereby processing the tooth grooves on the car seat headrest rod 38.

[0037] The technical effect achieved by this embodiment is as follows: through this embodiment, the toothed groove is obtained by roller extrusion molding. Since a processing method without removing material is adopted, the mechanical strength of the headrest rod is significantly enhanced. The unique fixture seat design ensures that the diameter of the headrest rod is not easily deformed. The machine maintenance cost is low and the operation is simple. No coolant is required during the processing, which reduces harm to the human body and pollution to the environment. This embodiment does not require a mold, and the product can be processed through simple fixture debugging, which greatly reduces the enterprise cost and machine development time.

[0038] Example 2

[0039] like Figure 2 , Figure 7 , Figure 8 and Fig. 9As shown, a headrest rod tooth forming machine in this embodiment includes all the technical features of Example 1. In addition, the vertical lifting mechanism includes: a first slider 28, a first slide rail 25, a lower slide seat 26, a second slide rail 31, a second slider 16, an upper slide seat 15, a fixed baffle 14, an electric push rod 27 and an electric push rod seat 24; wherein, the first slider 28 and the second slider 16 are both provided with a trapezoidal groove that gradually increases inward from the open end, the first slide rail 25 and the second slide rail 31 are linear guide rails with a trapezoidal cross-section adapted thereto, and a plurality of first slide rails 25 are fixed parallel to each other. On the machine base 1, the extension direction of the first slide rail 25 is the same as the length direction of the support plate 4, that is, the reciprocating direction of the upper mold base. The multiple first slide rails 25 are located between the two support plates 4. The lower surface of the lower slide seat 26 is fixed with multiple first sliders 28 and is slidably connected with the multiple first slide rails 25 through the multiple first sliders 28. For example, there are two first slide rails 25 and four first sliders 28. Two first sliders 28 are respectively fixed on the two edges of the lower slide seat 26, and every two first sliders 28 are slidably connected to one of the first slide rails 25; the upper surface of the lower slide seat 26 is inclined The lower surface of the lower slide 26 is fixed with a plurality of second slide rails 31, the lower surface of the upper slide 15 is an inclined surface parallel to the upper surface of the lower slide 26, the lower surface of the upper slide 15 is fixed with a plurality of second sliders 16 and is slidably connected with the plurality of second slide rails 31 through the plurality of second sliders 16, for example, there are two second slide rails 31, there are four second sliders 16, two edges of the upper slide 15 are respectively fixed with two second sliders 16, and every two second sliders 16 are slidably connected with one of the second slide rails 31; one end of the upper slide 15 close to the variable frequency motor 10 in the reciprocating direction A fixed baffle 14 is provided on one side, and the fixed baffle 14 is vertically fixed on the machine base 1. The upper slide 15 is slidably connected to the vertical surface of the fixed baffle 14, which can be achieved by the cooperation of the slide rail and the slider. The inclination direction of the inclined surface on the lower slide seat 26 is gradually lowered toward the fixed baffle 14; the end of the lower slide seat 26 away from the fixed baffle 14 in the reciprocating movement direction is connected to the push rod end of the electric push rod 27, the motor end of the electric push rod 27 is fixed on the electric push rod seat 24, and the electric push rod seat 24 is fixed on the machine base 1; the upper surface of the upper slide seat 15 is fixedly connected to the lower surface of the clamp seat.

[0040] The working process of this embodiment is: start the machine, the upper die seat continuously performs horizontal reciprocating motion under the drive of the variable frequency motor 10, and the lower slide seat 26 performs reciprocating motion under the drive of the electric push rod 27. With the reciprocating motion of the lower slide seat 26, the upper slide seat 15 is restricted by the fixed baffle 14, so that the upper slide seat 15 reciprocates in the vertical direction, thereby gradually pushing the workpiece to the position of the hob 29 on the upper die seat for extrusion processing.

[0041] The beneficial effects of this embodiment are as follows: by adopting the method of using the lower slide seat 26 to push the upper slide seat 15 to move up and down, the accuracy of the up and down movement is higher, which can ensure the gradual extrusion molding of the processed tooth grooves, reduce the increase in the scrap rate caused by the sudden displacement of the fixture seat, ensure the uniform increase of the extrusion force during the tooth groove processing, and achieve good processing and molding effects. The reciprocating movement of the lower slide seat 26 is controlled by the electric push rod 27, the drive is smooth and fast, and the structure is simple.

[0042] Example 3

[0043] like Figure 2 , Figure 4 , Figure 5 , Figure 6 , Fig.12 and Fig.13As shown, a headrest rod tooth forming machine in this embodiment includes all the technical features of Example 2. In addition, the fixture seat includes: a fixture seat plate 21, a workpiece fixture 18 and two clamping cylinders 20; the lower surface of the fixture seat plate 21 is fixedly connected to the upper surface of the upper slide 15; the upper surface of the fixture seat plate 21 is fixedly connected with a first mounting seat 34, a second mounting seat 35 and a third mounting seat 36 and a fixture baffle 37, the first mounting seat 34, the second mounting seat 35 and the third mounting seat 36 are all L-shaped, and the first mounting seat 34, the second mounting seat 35 and the third mounting seat 36 are arranged in sequence. The first mounting seat 34, the second mounting seat 35 and the L-shaped end face of the third mounting seat 36 are located on the same vertical plane, and the fixture baffle 37 is arranged at intervals on one side of the vertical plane. A workpiece fixture 18 is arranged between the vertical plane and the fixture baffle 37, wherein the workpiece fixture 18 is made of elastic material; the lower surface of the workpiece fixture 18 abuts against the fixture seat plate 21, and the upper surface of the workpiece fixture 18 is provided with a long semicircular groove 33, and the length direction of the semicircular groove 33 is perpendicular to the reciprocating motion direction of the upper die seat. When working, the steel pipe section of the blank of the car seat headrest rod 38 is placed into the semicircular groove 33 , and then the clamping cylinder 20 is actuated to clamp the rough workpiece; the two clamping cylinders 20 are respectively fixed on the first mounting seat 34 and the second mounting seat 35 and the second mounting seat 35 and the third mounting seat 36 by bolt connection, and the push rod ends of the two clamping cylinders 20 respectively pass through the gap between the first mounting seat 34 and the second mounting seat 35 and the gap between the second mounting seat 35 and the third mounting seat 36 and then abut on the workpiece fixture 18, wherein the clamping cylinder 20 is a hydraulic cylinder, and power is supplied by a hydraulic pump; the fixture seat also includes a positioning cylinder 13, a cylinder seat 22, a positioning joint 19 and a positioning block 17; the positioning The cylinder body of the positioning cylinder 13 is fixed on the fixture base plate 21 through the cylinder seat 22, wherein the positioning cylinder 13 is an air cylinder, which is powered by an air pump, and a positioning joint 19 is fixed on the push rod end of the positioning cylinder 13, and the positioning joint 19 is a U-shaped structure or a Y-shaped joint, and a positioning block 17 is fixed on the open end of the positioning joint 19, and the positioning block 17 is a long strip structure, and one vertical side surface of the positioning block 17 is inclined to the other vertical side surface, and one vertical side surface of the positioning block 17 abuts against the push rod ends of the two clamping cylinders 20, and the other inclined vertical side surface of the positioning block 17 abuts against the workpiece fixture 18.

[0044] The beneficial effects of this embodiment are as follows: by setting up the clamping cylinder 20 and adopting hydraulic power, the clamping effect is good; by using the positioning block 17 driven by the cylinder, the positioning is fast and accurate, and by setting a wedge-shaped structure with one vertical surface inclined to another vertical surface on the positioning block 17, the workpiece clamp 18 can be clamped step by step, and the clamping force of the workpiece clamp 18 can be adjusted, which has a wider adaptability and reduces the bending deformation of the workpiece.

[0045] Example 4

[0046] like Figure 1 and Figure 2 As shown, a headrest rod tooth forming machine in this embodiment includes all the technical features of Example 3. In addition, two support plates 4 are respectively provided with feed ports 6, wherein the feed ports 6 are rectangular grooves with open upper ends, the two feed ports 6 are arranged opposite to each other, the extension direction of the two ends of the semicircular groove 33 passes through the two feed ports 6, and the cylinder body of the positioning cylinder 13 passes through one feed port 6; Fig.10 and Fig.11 As shown, the upper die base includes an upper die base plate 5, a plurality of gaskets 32 and a plurality of third sliders 3, wherein the third slider 3 is provided with a trapezoidal groove whose open end gradually increases inward; the upper die base plate 5 is cut from a rectangular steel plate, the knife row 2 is fixed to the lower surface of the upper die base plate 5 by bolt connection, the number of gaskets 32 is the same as the number of third sliders 3, the upper surfaces of the plurality of third sliders 3 are fixedly connected to the lower surface of the upper die base plate 5, a gasket 32 ​​is arranged between each third slider 3 and the lower surface of the upper die base plate 5, and the plurality of third sliders 3 are divided into two groups and are respectively slidably connected to the two support plates 4; It also includes two third slide rails 8 and two fourth slide rails 23; a third slide rail 8 is fixed on one side of the feed port 6 on each support plate 4, and a fourth slide rail 23 is fixed on the other side of the feed port 6 on each support plate 4. The third slide rail 8 and the fourth slide rail 23 are both slidably connected to the upper mold base plate 5 through the third slider 3. For example, there are six third sliders 3, and the two edges of the upper mold base plate 5 are slidably connected to the third slide rail 8 through two third sliders 3 respectively, and the two edges of the upper mold base plate 5 are slidably connected to the fourth slide rail 23 through one third slider 3 respectively. The third slide rail 8 and the fourth slide rail 23 are both guide rails with trapezoidal cross-sections.

[0047] The beneficial effects of this embodiment are: by setting the gasket 32, the buffering performance of the third slider 3 fixed on the upper mold base plate 5 is enhanced, the damage to the upper mold base plate 5 caused by hard extrusion is reduced, and by setting a sliding connection method of multiple third sliders 3, the movement of the upper mold base plate 5 is smoother.

[0048] Example 5

[0049] like Figure 2As shown, a headrest rod tooth forming machine in this embodiment includes all the technical features of Example 4, and in addition, it also includes a cutter shaft 30, which is a round shaft, and a plurality of hob grooves are arranged at intervals on the cutter row 2, and a plurality of hobs 29 are respectively arranged in the plurality of hob grooves in a one-to-one correspondence, and the plurality of hobs 29 are all fixed on the cutter shaft 30, and the cutter shaft 30 is rotatably connected to the cutter row 2, and the axis of the cutter shaft 30 is perpendicular to the reciprocating movement direction of the upper die seat; the crank-connecting rod mechanism includes an eccentric wheel 11 and a transmission arm 9; the eccentric wheel 11 is fixed on the output shaft of the variable frequency motor 10, and an eccentric protrusion is arranged at the eccentric position of the center of the eccentric wheel 11, and the eccentric protrusion is rotatably connected to one end of the transmission arm 9, and the other end of the transmission arm 9 is rotatably connected to the lower surface of the upper die seat; as shown Figure 4 As shown, it also includes a workpiece positioning accessory 7 and a motor cover 12; one end of the workpiece positioning accessory 7 is fixed to the side wall of the support plate 4, and the other end of the workpiece positioning accessory 7 is bent and extended to above the upper surface of the upper die seat, which is used to prevent the tooth groove processing from being misaligned due to the shaking of the car seat headrest rod 38 during the extrusion process. The motor cover 12 is sleeved on the outer peripheral side of the output shaft of the variable frequency motor 10 and the crank connecting rod mechanism.

[0050] The beneficial effects of this embodiment are as follows: by using the same cutter shaft 30 to connect multiple hobs 29, better consistency of multiple tooth groove depths is achieved; by providing the workpiece positioning accessory 7, the shaking of the unprocessed automobile seat headrest rod 38 blank during the processing is reduced; by providing the motor cover 12, the safety of the machine operation is increased and the occurrence of dangerous situations to personnel is reduced.

[0051] Although the present invention has been described in detail above by general description and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the present invention. Therefore, these modifications or improvements made without departing from the spirit of the present invention all belong to the scope of protection claimed by the present invention.

[0052] The terms such as "upper", "lower", "left", "right", "middle", etc. cited in this specification are only for the convenience of description and are not intended to limit the scope of implementation of the present invention. Changes or adjustments to their relative relationships should be regarded as within the scope of implementation of the present invention without substantially changing the technical content.

Claims

1. A headrest rod tooth forming machine, used for processing the tooth grooves on the headrest rod of a car seat, characterized in that: include: A machine base (1), a vertical lifting mechanism, a fixture base, an upper die base, two support plates (4) and a variable frequency motor (10); the two support plates (4) are vertically fixed on the machine base (1), the two support plates (4) are parallel to each other, the upper die base is slidably connected to the two support plates (4), the variable frequency motor (10) is fixed on one side of the ends of the two support plates (4) in the length direction, and the variable frequency motor (10) drives the upper die base to move between the two support plates through a crank connecting rod mechanism. (4) horizontal reciprocating motion; a knife row (2) is arranged on the lower surface of the upper die seat, and a plurality of roller cutters (29) are rotatably connected to the knife row (2); the vertical lifting mechanism is arranged between the two support plates (4), the lower surface of the vertical lifting mechanism is connected to the machine base (1), the upper surface of the vertical lifting mechanism is connected to the fixture seat, the fixture seat is located below the knife row (2), and the vertical lifting mechanism is used to drive the fixture seat to reciprocate in the vertical direction; The vertical lifting mechanism comprises: a first slider (28), a first slide rail (25), a lower slide seat (26), a second slide rail (31), a second slider (16), an upper slide seat (15), a fixed baffle (14), an electric push rod (27) and an electric push rod seat (24); a plurality of the first slide rails (25) are fixed on the machine base (1) in parallel with each other, and the plurality of the first slide rails (25) are all located between the two support plates (4); a plurality of the first sliders (28) are fixed on the lower surface of the lower slide seat (26) and are slidably connected to the plurality of the first slide rails (25) through the plurality of the first sliders (28); the upper surface of the lower slide seat (26) is an inclined surface, a plurality of the second slide rails (31) are fixed on the upper surface of the lower slide seat (26), and the lower surface of the upper slide seat (15) is an inclined surface parallel to the upper surface of the lower slide seat (26) , a plurality of second sliding blocks (16) are fixed on the lower surface of the upper slide seat (15) and are slidably connected to a plurality of second sliding rails (31) through the plurality of second sliding blocks (16); a fixed baffle (14) is provided on one side of the upper slide seat (15) close to one end of the variable frequency motor (10) in the reciprocating direction, the fixed baffle (14) is vertically fixed on the machine base (1), and the upper slide seat (15) is slidably connected to the vertical surface of the fixed baffle (14); an end of the lower slide seat (26) away from the fixed baffle (14) in the reciprocating direction is connected to the push rod end of the electric push rod (27), the motor end of the electric push rod (27) is fixed on the electric push rod seat (24), and the electric push rod seat (24) is fixed on the machine base (1); the upper surface of the upper slide seat (15) is fixedly connected to the lower surface of the clamp seat; The fixture seat comprises: a fixture seat plate (21), a workpiece fixture (18) and two clamping cylinders (20); the lower surface of the fixture seat plate (21) is fixedly connected to the upper surface of the upper slide seat (15); the upper surface of the fixture seat plate (21) is fixedly connected to a first mounting seat (34), a second mounting seat (35), a third mounting seat (36) and a fixture baffle (37); the first mounting seat (34), the second mounting seat (35) and the third mounting seat (36) are all L-shaped; the first mounting seat (34), the second mounting seat (35) and the third mounting seat (36) are arranged in sequence at intervals; an L-shaped end face of the first mounting seat (34), the second mounting seat (35) and the third mounting seat (36) is located on the same vertical plane; the fixture baffle (37) is arranged at intervals on one side of the vertical plane; the vertical plane and the The workpiece fixture (18) is arranged between the fixture baffles (37), wherein the workpiece fixture (18) is made of elastic material; the lower surface of the workpiece fixture (18) abuts against the fixture base plate (21), and the upper surface of the workpiece fixture (18) is provided with a long semicircular groove (33), and the length direction of the semicircular groove (33) is perpendicular to the reciprocating motion direction of the upper die seat; the two clamping cylinders (20) are respectively fixed on the first mounting seat (34) and the second mounting seat (35) and on the second mounting seat (35) and the third mounting seat (36), and the push rod ends of the two clamping cylinders (20) respectively pass through the gap between the first mounting seat (34) and the second mounting seat (35) and the gap between the second mounting seat (35) and the third mounting seat (36) and then abut against the workpiece fixture (18); The fixture seat also includes a positioning cylinder (13), a cylinder seat (22), a positioning joint (19) and a positioning block (17); the cylinder body of the positioning cylinder (13) is fixed to the fixture seat plate (21) through the cylinder seat (22); the push rod end of the positioning cylinder (13) is fixed with the positioning joint (19); the positioning block (17) is fixed on the positioning joint (19); the positioning block (17) is a long strip structure; one vertical side surface of the positioning block (17) is inclined to the other vertical side surface; one vertical side surface of the positioning block (17) abuts against the push rod ends of the two clamping cylinders (20); the other inclined vertical side surface of the positioning block (17) abuts against the workpiece fixture (18).

2. A headrest rod tooth forming machine according to claim 1, characterized in that: A feed port (6) is respectively provided on the two support plates (4), and the two feed ports (6) are arranged opposite to each other. The extension direction of the two ends of the semicircular groove (33) passes through the two feed ports (6), and the cylinder body of the positioning cylinder (13) passes through one of the feed ports (6).

3. A headrest rod tooth forming machine according to claim 2, characterized in that: The upper die base comprises an upper die base plate (5), a plurality of gaskets (32) and a plurality of third sliders (3); the number of the gaskets (32) is the same as the number of the third sliders (3); the upper surfaces of the plurality of third sliders (3) are fixedly connected to the lower surface of the upper die base plate (5); a gasket (32) is arranged between each of the third sliders (3) and the lower surface of the upper die base plate (5); and the plurality of third sliders (3) are divided into two groups and are respectively slidably connected to the two support plates (4).

4. A headrest rod tooth forming machine according to claim 3, characterized in that: It also includes two third slide rails (8) and two fourth slide rails (23); the third slide rail (8) is fixed on one side of the feed port (6) on each of the support plates (4), and the fourth slide rail (23) is fixed on the other side of the feed port (6) on each of the support plates (4); the third slide rail (8) and the fourth slide rail (23) are both slidably connected to the upper mold base plate (5) through the third slider (3).

5. The headrest rod tooth forming machine according to claim 1, characterized in that: It also includes a cutter shaft (30), a plurality of roller cutter grooves are arranged at intervals on the cutter row (2), a plurality of roller cutters (29) are arranged in the plurality of roller cutter grooves in a one-to-one correspondence, and the plurality of roller cutters (29) are all fixed on the cutter shaft (30), the cutter shaft (30) and the cutter row (2) are rotatably connected, and the axis of the cutter shaft (30) is perpendicular to the reciprocating movement direction of the upper die seat.

6. The headrest rod tooth forming machine according to claim 1, characterized in that: The crank-connecting rod mechanism comprises an eccentric wheel (11) and a transmission arm (9); the eccentric wheel (11) is fixed on the output shaft of the variable frequency motor (10); an eccentric protrusion is provided at an eccentric position at the center of the eccentric wheel (11); the eccentric protrusion is rotatably connected to one end of the transmission arm (9); and the other end of the transmission arm (9) is rotatably connected to the lower surface of the upper die seat.

7. The headrest rod tooth forming machine according to claim 1, characterized in that: It also includes a workpiece positioning accessory (7) and a motor cover (12); one end of the workpiece positioning accessory (7) is fixed to the side wall of the support plate (4), and the other end of the workpiece positioning accessory (7) is bent and extends above the upper surface of the upper die seat, and the motor cover (12) is sleeved on the output shaft of the variable frequency motor (10) and the outer peripheral side of the crank connecting rod mechanism.

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